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/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:20,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:20,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:20,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:20,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:20,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:20,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:20,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:20,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:20,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:20,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:20,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:20,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:20,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:20,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:20,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:20,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:20,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:20,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:20,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:20,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:20,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:20,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:20,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:20,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:20,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:20,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:20,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:20,649 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 [2019-10-14 23:52:20,666 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:20,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:20,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:20,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:20,668 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:20,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:20,669 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:20,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:20,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:20,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:20,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:20,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:20,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:20,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:20,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:20,673 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:20,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:20,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:20,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:20,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:20,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:20,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:20,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:20,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:20,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:20,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:20,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:20,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:20,677 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 [2019-10-14 23:52:20,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:20,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:20,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:20,982 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:20,982 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:20,983 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-10-14 23:52:21,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55bf55fbd/6df6aa47d2b949a898b35fea13e21484/FLAG87da612ab [2019-10-14 23:52:21,509 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:21,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2019-10-14 23:52:21,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55bf55fbd/6df6aa47d2b949a898b35fea13e21484/FLAG87da612ab [2019-10-14 23:52:21,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55bf55fbd/6df6aa47d2b949a898b35fea13e21484 [2019-10-14 23:52:21,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:21,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:21,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:21,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:21,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:21,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:21" (1/1) ... [2019-10-14 23:52:21,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5d6786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:21, skipping insertion in model container [2019-10-14 23:52:21,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:21" (1/1) ... [2019-10-14 23:52:21,957 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:21,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:22,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:22,172 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:22,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:22,216 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:22,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22 WrapperNode [2019-10-14 23:52:22,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:22,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:22,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:22,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:22,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (1/1) ... [2019-10-14 23:52:22,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:22,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:22,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:22,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:22,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (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 [2019-10-14 23:52:22,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:22,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:22,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:22,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:22,686 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:22,686 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:52:22,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:22 BoogieIcfgContainer [2019-10-14 23:52:22,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:22,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:22,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:22,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:22,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:21" (1/3) ... [2019-10-14 23:52:22,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bca0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:22, skipping insertion in model container [2019-10-14 23:52:22,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:22" (2/3) ... [2019-10-14 23:52:22,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bca0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:22, skipping insertion in model container [2019-10-14 23:52:22,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:22" (3/3) ... [2019-10-14 23:52:22,706 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2019-10-14 23:52:22,738 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:22,756 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:22,786 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:22,820 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:22,821 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:22,821 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:22,821 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:22,821 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:22,821 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:22,821 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:22,822 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-14 23:52:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:52:22,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:22,843 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:22,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:22,850 INFO L82 PathProgramCache]: Analyzing trace with hash -825680561, now seen corresponding path program 1 times [2019-10-14 23:52:22,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:22,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787402180] [2019-10-14 23:52:22,858 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:22,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:22,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:22,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787402180] [2019-10-14 23:52:22,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:22,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:22,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805842298] [2019-10-14 23:52:22,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:22,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:23,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:23,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:23,016 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-10-14 23:52:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:23,044 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2019-10-14 23:52:23,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:23,045 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-14 23:52:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:23,056 INFO L225 Difference]: With dead ends: 59 [2019-10-14 23:52:23,056 INFO L226 Difference]: Without dead ends: 29 [2019-10-14 23:52:23,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-14 23:52:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-14 23:52:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-14 23:52:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-10-14 23:52:23,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2019-10-14 23:52:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:23,103 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-10-14 23:52:23,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-10-14 23:52:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:52:23,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:23,105 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:23,105 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1876449348, now seen corresponding path program 1 times [2019-10-14 23:52:23,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:23,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470083862] [2019-10-14 23:52:23,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:23,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:23,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:23,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470083862] [2019-10-14 23:52:23,164 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:23,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:23,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091799969] [2019-10-14 23:52:23,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:23,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:23,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:23,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:23,168 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2019-10-14 23:52:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:23,237 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-10-14 23:52:23,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:23,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-14 23:52:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:23,239 INFO L225 Difference]: With dead ends: 55 [2019-10-14 23:52:23,239 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 23:52:23,241 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 [2019-10-14 23:52:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 23:52:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-10-14 23:52:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 23:52:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-10-14 23:52:23,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 15 [2019-10-14 23:52:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:23,250 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-10-14 23:52:23,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2019-10-14 23:52:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:52:23,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:23,251 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:23,252 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:23,252 INFO L82 PathProgramCache]: Analyzing trace with hash -684235798, now seen corresponding path program 1 times [2019-10-14 23:52:23,253 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:23,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701852807] [2019-10-14 23:52:23,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:23,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:23,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:23,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701852807] [2019-10-14 23:52:23,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74355094] [2019-10-14 23:52:23,387 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 [2019-10-14 23:52:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:23,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:23,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:23,508 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:23,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1875248149] [2019-10-14 23:52:23,545 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 22 [2019-10-14 23:52:23,583 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:23,584 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:23,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:23,641 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 28 variables. [2019-10-14 23:52:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:23,644 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:23,675 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:23,675 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:23,677 INFO L553 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-10-14 23:52:23,678 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:23,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:23,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:23,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604675330] [2019-10-14 23:52:23,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:23,680 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:23,681 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:23,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:23,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:23,681 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 2 states. [2019-10-14 23:52:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:23,684 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-10-14 23:52:23,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:23,685 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-14 23:52:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:23,685 INFO L225 Difference]: With dead ends: 31 [2019-10-14 23:52:23,685 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:23,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:23,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-14 23:52:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:23,688 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:23,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:23,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:23,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:23,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:23,960 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:23,960 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:23,961 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:23,961 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:23,961 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:23,961 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:23,961 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:23,962 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 36) no Hoare annotation was computed. [2019-10-14 23:52:23,962 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-10-14 23:52:23,962 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-10-14 23:52:23,962 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-10-14 23:52:23,962 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 19) the Hoare annotation is: false [2019-10-14 23:52:23,962 INFO L443 ceAbstractionStarter]: For program point L12-3(lines 12 19) no Hoare annotation was computed. [2019-10-14 23:52:23,963 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: false [2019-10-14 23:52:23,963 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-10-14 23:52:23,963 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-10-14 23:52:23,963 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-10-14 23:52:23,963 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 31) no Hoare annotation was computed. [2019-10-14 23:52:23,963 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 27) the Hoare annotation is: false [2019-10-14 23:52:23,964 INFO L443 ceAbstractionStarter]: For program point L21-3(lines 21 27) no Hoare annotation was computed. [2019-10-14 23:52:23,964 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 36) no Hoare annotation was computed. [2019-10-14 23:52:23,964 INFO L439 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: false [2019-10-14 23:52:23,965 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 36) the Hoare annotation is: true [2019-10-14 23:52:23,966 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-10-14 23:52:23,966 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 25) no Hoare annotation was computed. [2019-10-14 23:52:23,967 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-10-14 23:52:23,967 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 17) no Hoare annotation was computed. [2019-10-14 23:52:23,967 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 17) no Hoare annotation was computed. [2019-10-14 23:52:23,967 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-14 23:52:23,969 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-14 23:52:23,969 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-14 23:52:23,970 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-14 23:52:23,970 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-14 23:52:23,970 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-14 23:52:23,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:23 BoogieIcfgContainer [2019-10-14 23:52:23,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:23,986 INFO L168 Benchmark]: Toolchain (without parser) took 2042.18 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 98.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:23,988 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:23,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.41 ms. Allocated memory is still 136.8 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:23,992 INFO L168 Benchmark]: Boogie Preprocessor took 124.02 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 177.4 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:23,994 INFO L168 Benchmark]: RCFGBuilder took 346.97 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 161.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:24,000 INFO L168 Benchmark]: TraceAbstraction took 1287.47 ms. Allocated memory is still 200.3 MB. Free memory was 160.3 MB in the beginning and 98.0 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:24,013 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 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.41 ms. Allocated memory is still 136.8 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.02 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 177.4 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.97 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 161.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1287.47 ms. Allocated memory is still 200.3 MB. Free memory was 160.3 MB in the beginning and 98.0 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 11 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 1 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 99, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8875, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0, AVG_WEAKENED_CONJUNCTS: 0.3, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...