/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 0.2.0-7d8eed3 [2020-11-06 22:19:26,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:19:26,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:19:26,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:19:26,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:19:26,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:19:26,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:19:26,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:19:26,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:19:26,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:19:26,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:19:26,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:19:26,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:19:26,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:19:26,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:19:26,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:19:26,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:19:26,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:19:26,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:19:26,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:19:26,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:19:26,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:19:26,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:19:26,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:19:26,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:19:26,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:19:26,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:19:26,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:19:26,459 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 [2020-11-06 22:19:26,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:19:26,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:19:26,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:19:26,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:19:26,530 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:19:26,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:19:26,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:19:26,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:19:26,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:19:26,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:19:26,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:19:26,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:19:26,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:19:26,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:19:26,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:19:26,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:19:26,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:19:26,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:19:26,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:19:26,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:19:26,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:19:26,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:19:26,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:19:26,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:19:26,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:19:26,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:19:26,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:19:26,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:19:26,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:19:26,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:19:26,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:19:27,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:19:27,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:19:27,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:19:27,027 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:19:27,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-11-06 22:19:27,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7fa85e8/97a951f563234d4f83a3f8be52ce2449/FLAG77299a10c [2020-11-06 22:19:27,742 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:19:27,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-11-06 22:19:27,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7fa85e8/97a951f563234d4f83a3f8be52ce2449/FLAG77299a10c [2020-11-06 22:19:28,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7fa85e8/97a951f563234d4f83a3f8be52ce2449 [2020-11-06 22:19:28,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:19:28,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:19:28,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:19:28,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:19:28,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:19:28,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748c239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28, skipping insertion in model container [2020-11-06 22:19:28,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:19:28,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:19:28,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:19:28,374 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:19:28,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:19:28,416 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:19:28,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28 WrapperNode [2020-11-06 22:19:28,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:19:28,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:19:28,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:19:28,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:19:28,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (1/1) ... [2020-11-06 22:19:28,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:19:28,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:19:28,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:19:28,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:19:28,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (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 [2020-11-06 22:19:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:19:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:19:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:19:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-06 22:19:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:19:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:19:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:19:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:19:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:19:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:19:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-06 22:19:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:19:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:19:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:19:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:19:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:19:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:19:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:19:28,974 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:19:28,975 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:19:28,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:28 BoogieIcfgContainer [2020-11-06 22:19:28,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:19:28,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:19:28,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:19:28,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:19:28,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:28" (1/3) ... [2020-11-06 22:19:28,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0efd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:28, skipping insertion in model container [2020-11-06 22:19:28,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:28" (2/3) ... [2020-11-06 22:19:28,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0efd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:28, skipping insertion in model container [2020-11-06 22:19:28,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:28" (3/3) ... [2020-11-06 22:19:28,990 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-11-06 22:19:29,010 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:19:29,016 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:19:29,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:19:29,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:19:29,075 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:19:29,075 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:19:29,075 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:19:29,076 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:19:29,076 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:19:29,076 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:19:29,076 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:19:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:19:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:19:29,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:19:29,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:19:29,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:19:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:19:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1397195593, now seen corresponding path program 1 times [2020-11-06 22:19:29,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:19:29,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049620429] [2020-11-06 22:19:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:19:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:19:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:19:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:19:29,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049620429] [2020-11-06 22:19:29,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:19:29,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:19:29,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331757260] [2020-11-06 22:19:29,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:19:29,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:19:29,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:19:29,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:19:29,644 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-11-06 22:19:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:19:30,147 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-11-06 22:19:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:19:30,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-06 22:19:30,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:19:30,161 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:19:30,161 INFO L226 Difference]: Without dead ends: 21 [2020-11-06 22:19:30,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:19:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-06 22:19:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-06 22:19:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-06 22:19:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-06 22:19:30,220 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-11-06 22:19:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:19:30,220 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-06 22:19:30,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:19:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-06 22:19:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:19:30,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:19:30,223 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] [2020-11-06 22:19:30,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:19:30,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:19:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:19:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash -630540429, now seen corresponding path program 1 times [2020-11-06 22:19:30,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:19:30,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85291479] [2020-11-06 22:19:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:19:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:19:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:19:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:19:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:19:30,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85291479] [2020-11-06 22:19:30,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:19:30,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:19:30,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593998461] [2020-11-06 22:19:30,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:19:30,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:19:30,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:19:30,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:19:30,421 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-11-06 22:19:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:19:30,619 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-11-06 22:19:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:19:30,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-06 22:19:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:19:30,622 INFO L225 Difference]: With dead ends: 34 [2020-11-06 22:19:30,622 INFO L226 Difference]: Without dead ends: 25 [2020-11-06 22:19:30,623 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 [2020-11-06 22:19:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-06 22:19:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-06 22:19:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-06 22:19:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-06 22:19:30,634 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2020-11-06 22:19:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:19:30,635 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-06 22:19:30,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:19:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-06 22:19:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:19:30,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:19:30,636 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] [2020-11-06 22:19:30,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:19:30,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:19:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:19:30,638 INFO L82 PathProgramCache]: Analyzing trace with hash 256963252, now seen corresponding path program 1 times [2020-11-06 22:19:30,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:19:30,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401414287] [2020-11-06 22:19:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:19:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:19:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:19:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:19:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:19:30,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401414287] [2020-11-06 22:19:30,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663432703] [2020-11-06 22:19:30,848 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 [2020-11-06 22:19:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:30,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:19:30,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:19:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:19:31,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:19:31,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-11-06 22:19:31,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900267011] [2020-11-06 22:19:31,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:19:31,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:19:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:19:31,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:19:31,026 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2020-11-06 22:19:31,246 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-06 22:19:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:19:31,520 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-06 22:19:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:19:31,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-11-06 22:19:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:19:31,522 INFO L225 Difference]: With dead ends: 30 [2020-11-06 22:19:31,523 INFO L226 Difference]: Without dead ends: 25 [2020-11-06 22:19:31,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:19:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-06 22:19:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-06 22:19:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-06 22:19:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-11-06 22:19:31,533 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-11-06 22:19:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:19:31,533 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-11-06 22:19:31,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:19:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-11-06 22:19:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:19:31,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:19:31,535 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] [2020-11-06 22:19:31,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:19:31,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:19:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:19:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2059612612, now seen corresponding path program 1 times [2020-11-06 22:19:31,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:19:31,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725829066] [2020-11-06 22:19:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:19:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:19:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:19:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:19:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:19:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:19:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-06 22:19:31,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725829066] [2020-11-06 22:19:31,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:19:31,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:19:31,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056743263] [2020-11-06 22:19:31,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:19:31,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:19:31,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:19:31,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:19:31,882 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-11-06 22:19:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:19:32,050 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-11-06 22:19:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:19:32,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-11-06 22:19:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:19:32,051 INFO L225 Difference]: With dead ends: 25 [2020-11-06 22:19:32,051 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:19:32,052 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 [2020-11-06 22:19:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:19:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:19:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:19:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:19:32,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-11-06 22:19:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:19:32,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:19:32,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:19:32,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:19:32,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:19:32,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:19:32,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:19:32,131 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:19:32,131 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:19:32,132 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:19:32,132 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:19:32,132 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:19:32,132 INFO L262 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|)) [2020-11-06 22:19:32,132 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:19:32,133 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:19:32,133 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:19:32,133 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:19:32,133 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:19:32,133 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 13 19) the Hoare annotation is: true [2020-11-06 22:19:32,133 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2020-11-06 22:19:32,133 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: false [2020-11-06 22:19:32,134 INFO L266 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-06 22:19:32,134 INFO L266 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-06 22:19:32,134 INFO L269 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-11-06 22:19:32,134 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-06 22:19:32,134 INFO L266 CegarLoopResult]: For program point L16-2(lines 13 19) no Hoare annotation was computed. [2020-11-06 22:19:32,134 INFO L266 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-11-06 22:19:32,134 INFO L266 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-11-06 22:19:32,135 INFO L266 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-06 22:19:32,135 INFO L269 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-11-06 22:19:32,135 INFO L269 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-11-06 22:19:32,135 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-06 22:19:32,135 INFO L266 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-11-06 22:19:32,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:19:32 BoogieIcfgContainer [2020-11-06 22:19:32,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:19:32,144 INFO L168 Benchmark]: Toolchain (without parser) took 4039.59 ms. Allocated memory was 158.3 MB in the beginning and 192.9 MB in the end (delta: 34.6 MB). Free memory was 113.8 MB in the beginning and 96.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 53.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:19:32,145 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 158.3 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:19:32,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 158.3 MB. Free memory was 113.0 MB in the beginning and 104.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:19:32,146 INFO L168 Benchmark]: Boogie Preprocessor took 39.84 ms. Allocated memory is still 158.3 MB. Free memory was 104.1 MB in the beginning and 102.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:19:32,147 INFO L168 Benchmark]: RCFGBuilder took 517.88 ms. Allocated memory is still 158.3 MB. Free memory was 102.8 MB in the beginning and 129.6 MB in the end (delta: -26.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:19:32,148 INFO L168 Benchmark]: TraceAbstraction took 3161.82 ms. Allocated memory was 158.3 MB in the beginning and 192.9 MB in the end (delta: 34.6 MB). Free memory was 129.2 MB in the beginning and 96.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:19:32,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 158.3 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 158.3 MB. Free memory was 113.0 MB in the beginning and 104.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.84 ms. Allocated memory is still 158.3 MB. Free memory was 104.1 MB in the beginning and 102.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 517.88 ms. Allocated memory is still 158.3 MB. Free memory was 102.8 MB in the beginning and 129.6 MB in the end (delta: -26.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3161.82 ms. Allocated memory was 158.3 MB in the beginning and 192.9 MB in the end (delta: 34.6 MB). Free memory was 129.2 MB in the beginning and 96.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 68.3 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: 2.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 58 SDslu, 110 SDs, 0 SdLazy, 228 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s 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...