/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-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:21:12,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:21:12,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:21:12,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:21:12,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:21:12,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:21:12,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:21:12,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:21:12,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:21:12,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:21:12,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:21:12,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:21:12,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:21:12,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:21:12,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:21:12,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:21:12,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:21:12,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:21:12,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:21:12,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:21:12,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:21:12,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:21:12,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:21:12,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:21:12,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:21:12,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:21:12,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:21:12,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:21:12,542 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 18:21:12,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:21:12,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:21:12,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:21:12,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:21:12,598 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:21:12,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:21:12,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:21:12,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:21:12,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:21:12,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:21:12,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:21:12,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:21:12,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:21:12,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:21:12,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:21:12,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:21:12,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:21:12,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:21:12,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:21:12,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:21:12,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:21:12,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:21:12,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:21:12,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:21:12,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:21:12,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:21:12,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:21:12,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:21:12,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:21:12,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:21:12,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:21:13,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:21:13,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:21:13,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:21:13,016 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:21:13,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-10-23 18:21:13,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff0bb528/b70ee17df4044df390255c0b56d3dc07/FLAGfd2fd7f9b [2020-10-23 18:21:13,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:21:13,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-10-23 18:21:13,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff0bb528/b70ee17df4044df390255c0b56d3dc07/FLAGfd2fd7f9b [2020-10-23 18:21:14,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cff0bb528/b70ee17df4044df390255c0b56d3dc07 [2020-10-23 18:21:14,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:21:14,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:21:14,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:21:14,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:21:14,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:21:14,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4116517d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14, skipping insertion in model container [2020-10-23 18:21:14,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:21:14,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:21:14,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:21:14,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:21:14,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:21:14,369 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:21:14,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14 WrapperNode [2020-10-23 18:21:14,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:21:14,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:21:14,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:21:14,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:21:14,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (1/1) ... [2020-10-23 18:21:14,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:21:14,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:21:14,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:21:14,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:21:14,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (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 18:21:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:21:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:21:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:21:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-10-23 18:21:14,476 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-23 18:21:14,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:21:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:21:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:21:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:21:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:21:14,477 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-23 18:21:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-10-23 18:21:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:21:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:21:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:21:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:21:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:21:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:21:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:21:14,719 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:21:14,720 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:21:14,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:21:14 BoogieIcfgContainer [2020-10-23 18:21:14,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:21:14,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:21:14,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:21:14,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:21:14,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:21:14" (1/3) ... [2020-10-23 18:21:14,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42642517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:21:14, skipping insertion in model container [2020-10-23 18:21:14,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:14" (2/3) ... [2020-10-23 18:21:14,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42642517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:21:14, skipping insertion in model container [2020-10-23 18:21:14,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:21:14" (3/3) ... [2020-10-23 18:21:14,731 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-10-23 18:21:14,745 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:21:14,751 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:21:14,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:21:14,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:21:14,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:21:14,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:21:14,800 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:21:14,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:21:14,801 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:21:14,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:21:14,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:21:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-23 18:21:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:21:14,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:21:14,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:21:14,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:21:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:21:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash -196318226, now seen corresponding path program 1 times [2020-10-23 18:21:14,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:21:14,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004468357] [2020-10-23 18:21:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:21:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:21:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:15,277 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 18:21:15,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004468357] [2020-10-23 18:21:15,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:21:15,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:21:15,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030538427] [2020-10-23 18:21:15,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:21:15,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:21:15,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:21:15,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:21:15,316 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-23 18:21:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:21:15,629 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-23 18:21:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:21:15,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-23 18:21:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:21:15,651 INFO L225 Difference]: With dead ends: 44 [2020-10-23 18:21:15,652 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:21:15,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:21:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:21:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-23 18:21:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-23 18:21:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-23 18:21:15,719 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-10-23 18:21:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:21:15,720 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-23 18:21:15,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:21:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-23 18:21:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-23 18:21:15,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:21:15,723 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:21:15,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:21:15,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:21:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:21:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash -952417132, now seen corresponding path program 1 times [2020-10-23 18:21:15,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:21:15,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914443846] [2020-10-23 18:21:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:21:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:21:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:21:15,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914443846] [2020-10-23 18:21:15,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316363994] [2020-10-23 18:21:15,950 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 18:21:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:16,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-23 18:21:16,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:21:16,092 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-23 18:21:16,092 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:21:16,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:21:16,098 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:21:16,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-23 18:21:16,126 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-10-23 18:21:16,128 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:21:16,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:21:16,131 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:21:16,132 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2020-10-23 18:21:16,239 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-23 18:21:16,240 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:21:16,244 INFO L625 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-10-23 18:21:16,245 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:21:16,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-10-23 18:21:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:21:16,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:21:16,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2020-10-23 18:21:16,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558625165] [2020-10-23 18:21:16,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 18:21:16,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:21:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 18:21:16,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:21:16,252 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 13 states. [2020-10-23 18:21:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:21:16,637 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-23 18:21:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 18:21:16,638 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-10-23 18:21:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:21:16,639 INFO L225 Difference]: With dead ends: 28 [2020-10-23 18:21:16,639 INFO L226 Difference]: Without dead ends: 24 [2020-10-23 18:21:16,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-23 18:21:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-23 18:21:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-23 18:21:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-23 18:21:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-23 18:21:16,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-10-23 18:21:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:21:16,650 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-23 18:21:16,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 18:21:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-23 18:21:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:21:16,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:21:16,651 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:21:16,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:21:16,865 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:21:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:21:16,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1259856814, now seen corresponding path program 2 times [2020-10-23 18:21:16,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:21:16,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573018403] [2020-10-23 18:21:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:21:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:21:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:21:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:21:17,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573018403] [2020-10-23 18:21:17,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140212148] [2020-10-23 18:21:17,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:21:17,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:21:17,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:21:17,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-23 18:21:17,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:21:17,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-23 18:21:17,167 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:21:17,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:21:17,169 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:21:17,170 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:1 [2020-10-23 18:21:17,248 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-10-23 18:21:17,249 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:21:17,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:21:17,253 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:21:17,253 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-10-23 18:21:17,367 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-23 18:21:17,368 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:21:17,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:21:17,373 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:21:17,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-10-23 18:21:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:21:17,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:21:17,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2020-10-23 18:21:17,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931334297] [2020-10-23 18:21:17,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 18:21:17,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:21:17,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 18:21:17,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-23 18:21:17,408 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 21 states. [2020-10-23 18:21:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:21:18,607 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-10-23 18:21:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 18:21:18,609 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 22 [2020-10-23 18:21:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:21:18,610 INFO L225 Difference]: With dead ends: 30 [2020-10-23 18:21:18,610 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:21:18,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 18:21:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:21:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:21:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:21:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:21:18,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-23 18:21:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:21:18,613 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:21:18,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 18:21:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:21:18,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:21:18,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:21:18,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:21:19,133 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-23 18:21:19,250 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 24 [2020-10-23 18:21:19,401 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-23 18:21:19,514 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-10-23 18:21:19,517 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:21:19,518 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:21:19,518 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:21:19,518 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:21:19,518 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:21:19,518 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 18:21:19,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:21:19,519 INFO L274 CegarLoopResult]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2020-10-23 18:21:19,519 INFO L270 CegarLoopResult]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (= .cse0 11)) (= 11 .cse1)) (or (not (= .cse0 10)) (= 10 .cse1)) (or (<= .cse1 12) (not (<= .cse0 12))) (or (not (< .cse0 21)) (< .cse1 21)))) [2020-10-23 18:21:19,519 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (not (< (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|) 21)) [2020-10-23 18:21:19,519 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-23 18:21:19,519 INFO L274 CegarLoopResult]: For program point L14(lines 14 19) no Hoare annotation was computed. [2020-10-23 18:21:19,520 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse2 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (and (<= .cse0 11) (<= .cse1 11)) (not (= .cse2 11))) (or (not (< .cse2 21)) (and (< .cse1 20) (< .cse0 21))) (or (not (= .cse2 10)) (and (= .cse1 10) (= 10 .cse0))) (or (<= .cse0 12) (not (<= .cse2 12))))) [2020-10-23 18:21:19,520 INFO L274 CegarLoopResult]: For program point L12(lines 12 19) no Hoare annotation was computed. [2020-10-23 18:21:19,521 INFO L274 CegarLoopResult]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2020-10-23 18:21:19,521 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:21:19,521 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:21:19,521 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:21:19,522 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:21:19,522 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 22 28) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:21:19,523 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 22 28) no Hoare annotation was computed. [2020-10-23 18:21:19,523 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 10) [2020-10-23 18:21:19,523 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-10-23 18:21:19,523 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 22 28) no Hoare annotation was computed. [2020-10-23 18:21:19,523 INFO L274 CegarLoopResult]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-23 18:21:19,527 INFO L270 CegarLoopResult]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 20) (not (< .cse1 20))) (or (= .cse0 10) (not (= .cse1 10))) (or (<= .cse0 11) (not (<= .cse1 11))))) [2020-10-23 18:21:19,527 INFO L274 CegarLoopResult]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-23 18:21:19,527 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse1 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (and (<= .cse0 12) (< .cse1 20)) (not (<= .cse2 11))) (or (< .cse0 21) (not (< .cse2 20))) (or (and (= .cse0 11) (<= .cse1 11)) (not (= .cse2 10))))) [2020-10-23 18:21:19,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:21:19 BoogieIcfgContainer [2020-10-23 18:21:19,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:21:19,537 INFO L168 Benchmark]: Toolchain (without parser) took 5397.96 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 126.0 MB in the beginning and 126.2 MB in the end (delta: -189.2 kB). Peak memory consumption was 106.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:21:19,538 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:21:19,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:21:19,546 INFO L168 Benchmark]: Boogie Preprocessor took 34.02 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:21:19,547 INFO L168 Benchmark]: RCFGBuilder took 315.30 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:21:19,548 INFO L168 Benchmark]: TraceAbstraction took 4810.59 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 100.8 MB in the beginning and 126.2 MB in the end (delta: -25.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:21:19,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 224.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.02 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 315.30 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4810.59 ms. Allocated memory was 151.0 MB in the beginning and 197.1 MB in the end (delta: 46.1 MB). Free memory was 100.8 MB in the beginning and 126.2 MB in the end (delta: -25.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 31 SDslu, 136 SDs, 0 SdLazy, 274 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 28 PreInvPairs, 28 NumberOfFragments, 324 HoareAnnotationTreeSize, 28 FomulaSimplifications, 700 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 524 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 7313 SizeOfPredicates, 24 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/22 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...