/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -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 0.1.25-d623d84 [2020-07-21 11:44:39,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:44:39,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:44:39,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:44:39,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:44:39,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:44:39,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:44:39,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:44:39,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:44:39,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:44:39,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:44:39,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:44:39,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:44:39,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:44:39,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:44:39,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:44:39,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:44:39,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:44:39,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:44:39,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:44:39,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:44:39,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:44:39,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:44:39,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:44:39,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:44:39,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:44:39,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:44:39,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:44:39,644 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 [2020-07-21 11:44:39,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:44:39,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:44:39,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:44:39,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:44:39,689 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:44:39,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:44:39,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:44:39,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:44:39,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:44:39,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:44:39,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:44:39,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:44:39,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:44:39,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:44:39,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:44:39,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:44:39,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:44:39,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:44:39,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:44:39,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:44:39,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:44:39,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:44:39,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:44:39,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:44:39,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:44:39,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:44:39,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:39,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:44:39,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:44:39,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:44:40,021 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:44:40,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:44:40,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:44:40,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:44:40,049 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:44:40,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-07-21 11:44:40,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f287640e/6f51d9940cbc4e87ab5036bed70547e3/FLAGe3b04fe2f [2020-07-21 11:44:40,643 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:44:40,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-07-21 11:44:40,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f287640e/6f51d9940cbc4e87ab5036bed70547e3/FLAGe3b04fe2f [2020-07-21 11:44:41,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f287640e/6f51d9940cbc4e87ab5036bed70547e3 [2020-07-21 11:44:41,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:44:41,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:44:41,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:44:41,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:44:41,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:44:41,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd352b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41, skipping insertion in model container [2020-07-21 11:44:41,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:44:41,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:44:41,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:44:41,276 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:44:41,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:44:41,314 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:44:41,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41 WrapperNode [2020-07-21 11:44:41,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:44:41,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:44:41,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:44:41,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:44:41,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (1/1) ... [2020-07-21 11:44:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:44:41,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:44:41,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:44:41,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:44:41,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (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 [2020-07-21 11:44:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:44:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:44:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:44:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:44:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:44:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:44:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:44:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:44:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:44:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:44:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:44:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:44:41,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:44:41,744 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:44:41,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:44:41 BoogieIcfgContainer [2020-07-21 11:44:41,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:44:41,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:44:41,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:44:41,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:44:41,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:44:41" (1/3) ... [2020-07-21 11:44:41,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e91ab00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:44:41, skipping insertion in model container [2020-07-21 11:44:41,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:41" (2/3) ... [2020-07-21 11:44:41,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e91ab00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:44:41, skipping insertion in model container [2020-07-21 11:44:41,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:44:41" (3/3) ... [2020-07-21 11:44:41,760 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-07-21 11:44:41,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:44:41,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 11:44:41,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 11:44:41,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:44:41,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:44:41,902 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:44:41,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:44:41,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:44:41,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:44:41,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:44:41,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:44:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 11:44:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:44:41,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:41,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:41,940 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:41,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1747837512, now seen corresponding path program 1 times [2020-07-21 11:44:41,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:41,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837051173] [2020-07-21 11:44:41,959 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:42,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:42,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:42,094 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:42,102 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:42,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:42,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837051173] [2020-07-21 11:44:42,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:42,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:42,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898589076] [2020-07-21 11:44:42,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:42,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:42,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:42,142 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-07-21 11:44:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:42,232 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-21 11:44:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:42,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 11:44:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:42,244 INFO L225 Difference]: With dead ends: 30 [2020-07-21 11:44:42,245 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 11:44:42,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 11:44:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 11:44:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 11:44:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 11:44:42,291 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-07-21 11:44:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:42,291 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 11:44:42,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 11:44:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:44:42,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:42,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:42,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:42,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:42,508 INFO L82 PathProgramCache]: Analyzing trace with hash -339542086, now seen corresponding path program 1 times [2020-07-21 11:44:42,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:42,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524949800] [2020-07-21 11:44:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:42,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:42,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:42,566 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:42,569 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:42,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:42,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524949800] [2020-07-21 11:44:42,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:42,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:42,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722508047] [2020-07-21 11:44:42,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:42,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:42,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:42,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:42,584 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-07-21 11:44:42,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:42,625 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-07-21 11:44:42,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:44:42,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:44:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:42,627 INFO L225 Difference]: With dead ends: 19 [2020-07-21 11:44:42,627 INFO L226 Difference]: Without dead ends: 17 [2020-07-21 11:44:42,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:42,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-21 11:44:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-07-21 11:44:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 11:44:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 11:44:42,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 11:44:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:42,635 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 11:44:42,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 11:44:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 11:44:42,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:42,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:42,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:42,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:42,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:42,839 INFO L82 PathProgramCache]: Analyzing trace with hash 117666302, now seen corresponding path program 1 times [2020-07-21 11:44:42,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:42,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452547030] [2020-07-21 11:44:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:42,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:42,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:42,916 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:42,919 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:42,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:42,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452547030] [2020-07-21 11:44:42,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:42,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:42,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343013661] [2020-07-21 11:44:42,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:42,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:42,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:42,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:42,939 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-07-21 11:44:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:42,979 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-21 11:44:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:42,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-21 11:44:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:42,980 INFO L225 Difference]: With dead ends: 20 [2020-07-21 11:44:42,981 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:44:42,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:44:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:44:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:44:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:44:42,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-21 11:44:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:42,983 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:44:42,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:44:42,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:44:43,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:43,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:44:43,318 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:44:43,318 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:44:43,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:44:43,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:44:43,319 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:44:43,319 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:44:43,319 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:44:43,320 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:44:43,320 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 11:44:43,320 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:44:43,320 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:44:43,320 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-21 11:44:43,321 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-07-21 11:44:43,321 INFO L268 CegarLoopResult]: For program point L31(lines 31 87) no Hoare annotation was computed. [2020-07-21 11:44:43,321 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-07-21 11:44:43,321 INFO L264 CegarLoopResult]: At program point L93(lines 12 100) the Hoare annotation is: (<= 0 main_~main__i~0) [2020-07-21 11:44:43,322 INFO L268 CegarLoopResult]: For program point L60(lines 60 68) no Hoare annotation was computed. [2020-07-21 11:44:43,322 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 100) no Hoare annotation was computed. [2020-07-21 11:44:43,322 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 11:44:43,322 INFO L264 CegarLoopResult]: At program point L77(lines 50 85) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (< main_~main__i~0 main_~main__nlen~0) (<= 1 main_~__VERIFIER_assert__cond~0) (<= 0 main_~main__i~0)) [2020-07-21 11:44:43,322 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 100) no Hoare annotation was computed. [2020-07-21 11:44:43,323 INFO L268 CegarLoopResult]: For program point L44(lines 44 85) no Hoare annotation was computed. [2020-07-21 11:44:43,324 INFO L264 CegarLoopResult]: At program point L67(lines 37 87) the Hoare annotation is: (and (< main_~main__i~0 main_~main__nlen~0) (<= 1 main_~__VERIFIER_assert__cond~0) (<= 0 main_~main__i~0)) [2020-07-21 11:44:43,324 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-07-21 11:44:43,324 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) no Hoare annotation was computed. [2020-07-21 11:44:43,325 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: true [2020-07-21 11:44:43,325 INFO L268 CegarLoopResult]: For program point L24(lines 24 94) no Hoare annotation was computed. [2020-07-21 11:44:43,325 INFO L268 CegarLoopResult]: For program point L74(lines 74 83) no Hoare annotation was computed. [2020-07-21 11:44:43,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:44:43 BoogieIcfgContainer [2020-07-21 11:44:43,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:44:43,361 INFO L168 Benchmark]: Toolchain (without parser) took 2309.83 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 103.1 MB in the end (delta: 70.1 kB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:43,365 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 11:44:43,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.12 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 92.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:43,368 INFO L168 Benchmark]: Boogie Preprocessor took 118.61 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 180.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:43,370 INFO L168 Benchmark]: RCFGBuilder took 315.99 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 166.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:43,376 INFO L168 Benchmark]: TraceAbstraction took 1604.40 ms. Allocated memory is still 201.3 MB. Free memory was 165.7 MB in the beginning and 103.1 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:43,390 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.12 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 92.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.61 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 180.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.99 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 166.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1604.40 ms. Allocated memory is still 201.3 MB. Free memory was 165.7 MB in the beginning and 103.1 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 62]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 <= main__i - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && main__i < main__nlen) && 1 <= __VERIFIER_assert__cond) && 0 <= main__i - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (main__i < main__nlen && 1 <= __VERIFIER_assert__cond) && 0 <= main__i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 41 SDslu, 49 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 9 NumberOfFragments, 30 HoareAnnotationTreeSize, 7 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 11 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 12 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...