java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:04:43,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:04:43,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:04:43,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:04:43,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:04:43,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:04:43,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:04:43,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:04:43,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:04:43,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:04:43,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:04:43,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:04:43,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:04:43,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:04:43,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:04:43,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:04:43,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:04:43,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:04:43,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:04:43,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:04:43,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:04:43,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:04:43,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:04:43,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:04:43,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:04:43,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:04:43,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:04:43,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:04:43,798 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 [2019-10-15 01:04:43,812 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:04:43,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:04:43,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:04:43,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:04:43,814 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:04:43,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:04:43,815 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:04:43,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:04:43,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:04:43,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:04:43,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:04:43,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:04:43,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:04:43,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:04:43,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:04:43,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:04:43,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:04:43,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:04:43,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:04:43,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:04:43,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:04:43,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:04:43,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:04:43,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:04:43,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:04:43,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:04:43,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:04:43,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:04:43,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:04:44,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:04:44,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:04:44,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:04:44,125 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:04:44,125 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:04:44,126 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2019-10-15 01:04:44,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03ed423d/6b0e98448fd04547ba109ce5750c3502/FLAG653a2c9bd [2019-10-15 01:04:44,742 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:04:44,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2019-10-15 01:04:44,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03ed423d/6b0e98448fd04547ba109ce5750c3502/FLAG653a2c9bd [2019-10-15 01:04:45,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03ed423d/6b0e98448fd04547ba109ce5750c3502 [2019-10-15 01:04:45,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:04:45,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:04:45,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:45,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:04:45,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:04:45,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fea14fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45, skipping insertion in model container [2019-10-15 01:04:45,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,170 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:04:45,190 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:04:45,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:45,394 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:04:45,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:45,519 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:04:45,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45 WrapperNode [2019-10-15 01:04:45,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:45,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:04:45,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:04:45,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:04:45,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (1/1) ... [2019-10-15 01:04:45,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:04:45,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:04:45,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:04:45,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:04:45,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (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 [2019-10-15 01:04:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:04:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:04:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:04:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:04:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:04:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:04:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:04:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:04:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:04:45,872 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:04:45,872 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:04:45,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:45 BoogieIcfgContainer [2019-10-15 01:04:45,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:04:45,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:04:45,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:04:45,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:04:45,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:04:45" (1/3) ... [2019-10-15 01:04:45,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243ceea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:45, skipping insertion in model container [2019-10-15 01:04:45,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:45" (2/3) ... [2019-10-15 01:04:45,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243ceea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:45, skipping insertion in model container [2019-10-15 01:04:45,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:45" (3/3) ... [2019-10-15 01:04:45,882 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2019-10-15 01:04:45,893 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:04:45,901 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:04:45,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:04:45,945 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:04:45,945 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:04:45,945 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:04:45,945 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:04:45,945 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:04:45,946 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:04:45,946 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:04:45,946 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:04:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-15 01:04:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:04:45,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:45,990 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:45,993 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:46,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1079158542, now seen corresponding path program 1 times [2019-10-15 01:04:46,011 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:46,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663362442] [2019-10-15 01:04:46,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:46,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:46,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:46,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663362442] [2019-10-15 01:04:46,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:46,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:04:46,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452339615] [2019-10-15 01:04:46,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:04:46,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:46,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:04:46,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:04:46,306 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-10-15 01:04:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:46,460 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2019-10-15 01:04:46,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:04:46,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-15 01:04:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:46,472 INFO L225 Difference]: With dead ends: 56 [2019-10-15 01:04:46,472 INFO L226 Difference]: Without dead ends: 30 [2019-10-15 01:04:46,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:04:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-15 01:04:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2019-10-15 01:04:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-15 01:04:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-15 01:04:46,522 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2019-10-15 01:04:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:46,523 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-15 01:04:46,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:04:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-15 01:04:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:04:46,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:46,526 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:46,526 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:46,527 INFO L82 PathProgramCache]: Analyzing trace with hash -476045897, now seen corresponding path program 1 times [2019-10-15 01:04:46,527 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:46,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540763697] [2019-10-15 01:04:46,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:46,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:46,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:46,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540763697] [2019-10-15 01:04:46,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:46,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:04:46,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011747865] [2019-10-15 01:04:46,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:04:46,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:46,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:04:46,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:04:46,615 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2019-10-15 01:04:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:46,628 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-10-15 01:04:46,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:04:46,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-15 01:04:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:46,631 INFO L225 Difference]: With dead ends: 36 [2019-10-15 01:04:46,631 INFO L226 Difference]: Without dead ends: 26 [2019-10-15 01:04:46,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:04:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-15 01:04:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-10-15 01:04:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-15 01:04:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-15 01:04:46,645 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2019-10-15 01:04:46,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:46,645 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-15 01:04:46,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:04:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-15 01:04:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:04:46,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:46,647 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:46,647 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1393486425, now seen corresponding path program 1 times [2019-10-15 01:04:46,648 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:46,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572707946] [2019-10-15 01:04:46,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:46,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:46,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:46,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572707946] [2019-10-15 01:04:46,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806400631] [2019-10-15 01:04:46,944 INFO L94 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 [2019-10-15 01:04:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:47,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 01:04:47,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:04:47,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:47,194 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:04:47,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:47,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1393543346] [2019-10-15 01:04:47,382 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-10-15 01:04:47,431 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:04:47,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:04:47,502 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:04:47,504 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 23 variables. [2019-10-15 01:04:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:47,508 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:04:47,547 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-15 01:04:47,547 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:04:47,551 INFO L553 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-10-15 01:04:47,551 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:04:47,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:04:47,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9, 7, 7] total 14 [2019-10-15 01:04:47,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724650281] [2019-10-15 01:04:47,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:04:47,555 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:47,555 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:04:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:04:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:04:47,556 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 2 states. [2019-10-15 01:04:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:47,562 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-15 01:04:47,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:04:47,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-15 01:04:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:47,563 INFO L225 Difference]: With dead ends: 25 [2019-10-15 01:04:47,563 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:04:47,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:04:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:04:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:04:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:04:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:04:47,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-15 01:04:47,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:47,566 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:04:47,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:04:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:04:47,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:04:47,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:04:47,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:04:47,809 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:04:47,809 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:04:47,809 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:47,809 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:47,810 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:04:47,810 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:04:47,810 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:04:47,810 INFO L439 ceAbstractionStarter]: At program point L31-2(lines 31 37) the Hoare annotation is: false [2019-10-15 01:04:47,810 INFO L443 ceAbstractionStarter]: For program point L31-3(lines 20 47) no Hoare annotation was computed. [2019-10-15 01:04:47,810 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 19 47) no Hoare annotation was computed. [2019-10-15 01:04:47,811 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 19 47) no Hoare annotation was computed. [2019-10-15 01:04:47,811 INFO L439 ceAbstractionStarter]: At program point L40-2(lines 40 44) the Hoare annotation is: false [2019-10-15 01:04:47,811 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: false [2019-10-15 01:04:47,811 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-10-15 01:04:47,811 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 19 47) the Hoare annotation is: true [2019-10-15 01:04:47,811 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: false [2019-10-15 01:04:47,811 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-10-15 01:04:47,812 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 45) no Hoare annotation was computed. [2019-10-15 01:04:47,812 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-15 01:04:47,812 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-10-15 01:04:47,812 INFO L443 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-10-15 01:04:47,812 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 13) no Hoare annotation was computed. [2019-10-15 01:04:47,812 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-10-15 01:04:47,813 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 9 15) no Hoare annotation was computed. [2019-10-15 01:04:47,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:47 BoogieIcfgContainer [2019-10-15 01:04:47,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:04:47,824 INFO L168 Benchmark]: Toolchain (without parser) took 2675.14 ms. Allocated memory was 144.2 MB in the beginning and 232.8 MB in the end (delta: 88.6 MB). Free memory was 102.1 MB in the beginning and 184.1 MB in the end (delta: -82.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:47,825 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-15 01:04:47,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.29 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 180.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:47,827 INFO L168 Benchmark]: Boogie Preprocessor took 51.15 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 178.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:47,828 INFO L168 Benchmark]: RCFGBuilder took 301.24 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 163.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:47,829 INFO L168 Benchmark]: TraceAbstraction took 1946.19 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 163.0 MB in the beginning and 184.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:47,833 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.29 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 180.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.15 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 178.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 301.24 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 163.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1946.19 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 163.0 MB in the beginning and 184.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 14 SDslu, 73 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=1, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 9 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 6305 SizeOfPredicates, 3 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 9/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 126, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9264705882352942, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9411764705882353, AVG_WEAKENED_CONJUNCTS: 0.35294117647058826, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...