/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/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:04,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:04,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:04,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:04,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:04,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:04,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:04,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:04,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:04,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:04,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:04,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:04,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:04,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:04,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:04,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:04,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:04,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:04,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:04,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:04,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:04,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:04,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:04,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:04,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:04,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:04,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:04,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:04,699 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 22:46:04,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:04,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:04,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:04,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:04,729 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:04,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:04,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:04,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:04,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:04,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:04,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:04,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:04,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:04,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:04,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:04,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:04,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:04,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:04,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:04,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:04,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:04,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:04,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:04,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:04,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:04,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:04,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:04,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:04,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:04,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:05,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:05,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:05,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:05,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:05,135 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:05,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-11-06 22:46:05,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ec20726/a2aabff350ea491b9dd9cf44b437c0f8/FLAGa8e98fffb [2020-11-06 22:46:05,805 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:05,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-11-06 22:46:05,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ec20726/a2aabff350ea491b9dd9cf44b437c0f8/FLAGa8e98fffb [2020-11-06 22:46:06,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ec20726/a2aabff350ea491b9dd9cf44b437c0f8 [2020-11-06 22:46:06,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:06,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:06,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:06,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:06,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:06,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d4a47a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06, skipping insertion in model container [2020-11-06 22:46:06,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:06,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:06,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:06,390 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:06,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:06,432 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:06,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06 WrapperNode [2020-11-06 22:46:06,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:06,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:06,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:06,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:06,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (1/1) ... [2020-11-06 22:46:06,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:06,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:06,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:06,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:06,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (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 22:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:06,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:06,873 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:46:06,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:06 BoogieIcfgContainer [2020-11-06 22:46:06,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:06,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:06,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:06,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:06,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:06" (1/3) ... [2020-11-06 22:46:06,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee4fcb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:06, skipping insertion in model container [2020-11-06 22:46:06,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:06" (2/3) ... [2020-11-06 22:46:06,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee4fcb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:06, skipping insertion in model container [2020-11-06 22:46:06,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:06" (3/3) ... [2020-11-06 22:46:06,885 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-11-06 22:46:06,910 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:06,918 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:06,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:07,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:07,035 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:07,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:07,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:07,036 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:07,036 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:07,036 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:07,036 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-06 22:46:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-06 22:46:07,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:07,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:07,075 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash -337312338, now seen corresponding path program 1 times [2020-11-06 22:46:07,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:07,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480306967] [2020-11-06 22:46:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:07,494 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 22:46:07,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480306967] [2020-11-06 22:46:07,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:07,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:46:07,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141040806] [2020-11-06 22:46:07,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:07,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:07,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:07,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:46:07,518 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-11-06 22:46:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:07,740 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-11-06 22:46:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:46:07,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-06 22:46:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:07,751 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:46:07,751 INFO L226 Difference]: Without dead ends: 18 [2020-11-06 22:46:07,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:46:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-06 22:46:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-06 22:46:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-06 22:46:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-06 22:46:07,798 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2020-11-06 22:46:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:07,798 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-06 22:46:07,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-06 22:46:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:07,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:07,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:07,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:07,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:07,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2032792398, now seen corresponding path program 1 times [2020-11-06 22:46:07,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:07,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001923366] [2020-11-06 22:46:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:07,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:07,937 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 22:46:07,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001923366] [2020-11-06 22:46:07,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:07,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:46:07,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102750583] [2020-11-06 22:46:07,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:07,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:07,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:07,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:46:07,942 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-11-06 22:46:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:08,091 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-06 22:46:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:46:08,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-06 22:46:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:08,093 INFO L225 Difference]: With dead ends: 21 [2020-11-06 22:46:08,093 INFO L226 Difference]: Without dead ends: 18 [2020-11-06 22:46:08,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:46:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-06 22:46:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-06 22:46:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-06 22:46:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-06 22:46:08,103 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-11-06 22:46:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:08,103 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-06 22:46:08,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:08,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-06 22:46:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:46:08,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:08,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:08,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:46:08,105 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:08,106 INFO L82 PathProgramCache]: Analyzing trace with hash 698690422, now seen corresponding path program 1 times [2020-11-06 22:46:08,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:08,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508277768] [2020-11-06 22:46:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:08,311 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 22:46:08,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508277768] [2020-11-06 22:46:08,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:08,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:08,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528909203] [2020-11-06 22:46:08,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:08,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:08,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:08,316 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2020-11-06 22:46:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:08,718 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-11-06 22:46:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:46:08,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-06 22:46:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:08,719 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:46:08,720 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:08,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:08,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-06 22:46:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:08,722 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:08,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:08,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:08,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:46:08,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:09,109 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2020-11-06 22:46:09,118 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:46:09,118 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:46:09,118 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:46:09,118 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:46:09,119 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:09,119 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)|) (= ~__return_100~0 |old(~__return_100~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:46:09,119 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:09,119 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:09,119 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:09,119 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:09,120 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:09,120 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:46:09,120 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-06 22:46:09,121 INFO L266 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:46:09,121 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:46:09,121 INFO L266 CegarLoopResult]: For program point L33(lines 33 89) no Hoare annotation was computed. [2020-11-06 22:46:09,121 INFO L262 CegarLoopResult]: At program point L64(line 64) the Hoare annotation is: false [2020-11-06 22:46:09,121 INFO L266 CegarLoopResult]: For program point L64-1(line 64) no Hoare annotation was computed. [2020-11-06 22:46:09,122 INFO L262 CegarLoopResult]: At program point L95(lines 14 102) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-11-06 22:46:09,122 INFO L266 CegarLoopResult]: For program point L62(lines 62 70) no Hoare annotation was computed. [2020-11-06 22:46:09,122 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 13 102) no Hoare annotation was computed. [2020-11-06 22:46:09,122 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-11-06 22:46:09,122 INFO L266 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-11-06 22:46:09,122 INFO L262 CegarLoopResult]: At program point L79(lines 52 87) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (< 0 .cse0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-11-06 22:46:09,123 INFO L266 CegarLoopResult]: For program point L46(lines 46 87) no Hoare annotation was computed. [2020-11-06 22:46:09,123 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 13 102) no Hoare annotation was computed. [2020-11-06 22:46:09,124 INFO L262 CegarLoopResult]: At program point L69(lines 39 89) the Hoare annotation is: (let ((.cse3 (+ main_~main__i~0 1))) (let ((.cse0 (<= .cse3 main_~main__nlen~0)) (.cse1 (= |old(~__return_100~0)| ~__return_100~0)) (.cse2 (< 0 .cse3))) (or (and .cse0 .cse1 .cse2 (= main_~__VERIFIER_assert__cond~0 1)) (and .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~2 0)) (not (= main_~__VERIFIER_assert__cond~0 0)) .cse2)))) [2020-11-06 22:46:09,124 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 13 102) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-11-06 22:46:09,125 INFO L266 CegarLoopResult]: For program point L26(lines 26 96) no Hoare annotation was computed. [2020-11-06 22:46:09,125 INFO L266 CegarLoopResult]: For program point L76(lines 76 85) no Hoare annotation was computed. [2020-11-06 22:46:09,125 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-11-06 22:46:09,125 INFO L266 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-11-06 22:46:09,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:09 BoogieIcfgContainer [2020-11-06 22:46:09,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:09,156 INFO L168 Benchmark]: Toolchain (without parser) took 2980.41 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 126.6 MB in the beginning and 161.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:09,158 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory was 123.6 MB in the beginning and 123.6 MB in the end (delta: 89.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:09,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.99 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:09,162 INFO L168 Benchmark]: Boogie Preprocessor took 34.56 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:09,164 INFO L168 Benchmark]: RCFGBuilder took 406.41 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 99.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:09,166 INFO L168 Benchmark]: TraceAbstraction took 2273.23 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 99.5 MB in the beginning and 161.4 MB in the end (delta: -61.9 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:09,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory was 123.6 MB in the beginning and 123.6 MB in the end (delta: 89.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.99 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 116.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.56 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 406.41 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 99.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2273.23 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 99.5 MB in the beginning and 161.4 MB in the end (delta: -61.9 MB). Peak memory consumption was 71.1 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && 0 < main__i + 1) && __VERIFIER_assert__cond == 1) || ((((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__i + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 84 SDslu, 49 SDs, 0 SdLazy, 87 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 117 HoareAnnotationTreeSize, 13 FomulaSimplifications, 556 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...