/usr/bin/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/loops/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:35:51,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:35:51,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:35:51,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:35:51,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:35:51,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:35:51,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:35:51,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:35:51,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:35:51,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:35:51,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:35:51,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:35:51,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:35:51,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:35:51,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:35:51,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:35:51,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:35:51,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:35:51,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:35:51,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:35:51,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:35:51,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:35:51,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:35:51,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:35:51,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:35:51,871 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 [2019-11-07 00:35:51,884 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:35:51,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:35:51,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:35:51,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:35:51,886 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:35:51,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:35:51,887 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:35:51,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:35:51,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:35:51,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:35:51,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:35:51,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:35:51,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:35:51,888 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:35:51,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:35:51,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:35:51,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:35:51,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:35:51,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:35:51,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:35:51,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:35:51,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:35:51,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:35:51,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:35:51,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:35:51,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:35:51,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:35:51,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:35:51,893 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 [2019-11-07 00:35:52,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:35:52,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:35:52,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:35:52,259 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:35:52,260 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:35:52,261 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2019-11-07 00:35:52,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807d82291/eb82cd8468c848fbb0b0a11e5ed8acbe/FLAG7a637f2a9 [2019-11-07 00:35:52,759 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:35:52,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2019-11-07 00:35:52,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807d82291/eb82cd8468c848fbb0b0a11e5ed8acbe/FLAG7a637f2a9 [2019-11-07 00:35:53,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807d82291/eb82cd8468c848fbb0b0a11e5ed8acbe [2019-11-07 00:35:53,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:35:53,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:35:53,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:53,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:35:53,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:35:53,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641f40a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53, skipping insertion in model container [2019-11-07 00:35:53,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,151 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:35:53,167 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:35:53,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:53,372 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:35:53,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:53,406 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:35:53,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53 WrapperNode [2019-11-07 00:35:53,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:53,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:35:53,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:35:53,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:35:53,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (1/1) ... [2019-11-07 00:35:53,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:35:53,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:35:53,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:35:53,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:35:53,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (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 [2019-11-07 00:35:53,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:35:53,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:35:53,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:35:53,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:35:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:35:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:35:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 00:35:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:35:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:35:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:35:53,813 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:35:53,813 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:35:53,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:53 BoogieIcfgContainer [2019-11-07 00:35:53,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:35:53,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:35:53,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:35:53,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:35:53,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:35:53" (1/3) ... [2019-11-07 00:35:53,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee65b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:53, skipping insertion in model container [2019-11-07 00:35:53,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:53" (2/3) ... [2019-11-07 00:35:53,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee65b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:53, skipping insertion in model container [2019-11-07 00:35:53,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:53" (3/3) ... [2019-11-07 00:35:53,823 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2019-11-07 00:35:53,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:35:53,874 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:35:53,908 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:35:53,953 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:35:53,953 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:35:53,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:35:53,954 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:35:53,954 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:35:53,954 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:35:53,955 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:35:53,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:35:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 00:35:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:35:53,986 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:53,987 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:53,989 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash -146959038, now seen corresponding path program 1 times [2019-11-07 00:35:54,005 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:54,005 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808591643] [2019-11-07 00:35:54,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:54,127 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808591643] [2019-11-07 00:35:54,128 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:54,128 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:35:54,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712250042] [2019-11-07 00:35:54,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:35:54,137 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:35:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:54,154 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-07 00:35:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:54,178 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-11-07 00:35:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:35:54,179 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:35:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:54,187 INFO L225 Difference]: With dead ends: 31 [2019-11-07 00:35:54,187 INFO L226 Difference]: Without dead ends: 14 [2019-11-07 00:35:54,190 INFO L630 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 [2019-11-07 00:35:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-07 00:35:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-07 00:35:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 00:35:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-07 00:35:54,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2019-11-07 00:35:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:54,227 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-07 00:35:54,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:35:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-07 00:35:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:35:54,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:54,229 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:54,229 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash -158964811, now seen corresponding path program 1 times [2019-11-07 00:35:54,230 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:54,230 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317636518] [2019-11-07 00:35:54,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:54,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317636518] [2019-11-07 00:35:54,347 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:54,347 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:35:54,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732908802] [2019-11-07 00:35:54,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:35:54,349 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:54,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:35:54,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:35:54,351 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-07 00:35:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:54,425 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-07 00:35:54,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:35:54,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 00:35:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:54,427 INFO L225 Difference]: With dead ends: 23 [2019-11-07 00:35:54,427 INFO L226 Difference]: Without dead ends: 18 [2019-11-07 00:35:54,429 INFO L630 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 [2019-11-07 00:35:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-07 00:35:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-07 00:35:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-07 00:35:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-07 00:35:54,435 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-07 00:35:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:54,435 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-07 00:35:54,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:35:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-07 00:35:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 00:35:54,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:54,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:54,436 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:54,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:54,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1017948080, now seen corresponding path program 1 times [2019-11-07 00:35:54,437 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:54,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629461852] [2019-11-07 00:35:54,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:54,680 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629461852] [2019-11-07 00:35:54,681 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595217859] [2019-11-07 00:35:54,681 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 [2019-11-07 00:35:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:54,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 00:35:54,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:54,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:54,936 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:55,119 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [826620045] [2019-11-07 00:35:55,126 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 15 [2019-11-07 00:35:55,168 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:35:55,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:35:55,252 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-11-07 00:35:55,380 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:35:55,384 INFO L272 AbstractInterpreter]: Visited 14 different actions 68 times. Merged at 5 different actions 30 times. Widened at 1 different actions 4 times. Performed 117 root evaluator evaluations with a maximum evaluation depth of 6. Performed 117 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-11-07 00:35:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:55,389 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:55,389 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:55,390 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2019-11-07 00:35:55,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33729524] [2019-11-07 00:35:55,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 00:35:55,391 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:55,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 00:35:55,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:35:55,392 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 21 states. [2019-11-07 00:35:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:55,709 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-11-07 00:35:55,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 00:35:55,711 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 14 [2019-11-07 00:35:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:55,718 INFO L225 Difference]: With dead ends: 42 [2019-11-07 00:35:55,718 INFO L226 Difference]: Without dead ends: 36 [2019-11-07 00:35:55,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:35:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-07 00:35:55,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-07 00:35:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-07 00:35:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-07 00:35:55,733 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2019-11-07 00:35:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:55,736 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-07 00:35:55,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 00:35:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-07 00:35:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 00:35:55,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:55,740 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:55,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:55,941 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:55,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash -852639511, now seen corresponding path program 1 times [2019-11-07 00:35:55,942 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:55,942 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295839706] [2019-11-07 00:35:55,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:35:55,968 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295839706] [2019-11-07 00:35:55,968 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:55,969 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:35:55,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185520388] [2019-11-07 00:35:55,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:35:55,970 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:35:55,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:35:55,971 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-11-07 00:35:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:55,990 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-07 00:35:55,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:35:55,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-07 00:35:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:55,993 INFO L225 Difference]: With dead ends: 36 [2019-11-07 00:35:55,993 INFO L226 Difference]: Without dead ends: 23 [2019-11-07 00:35:55,994 INFO L630 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 [2019-11-07 00:35:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-07 00:35:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-07 00:35:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-07 00:35:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-07 00:35:56,005 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2019-11-07 00:35:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:56,005 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-07 00:35:56,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:35:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-07 00:35:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 00:35:56,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:56,008 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:56,008 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:56,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1920151575, now seen corresponding path program 2 times [2019-11-07 00:35:56,010 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:56,011 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136739810] [2019-11-07 00:35:56,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:56,082 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136739810] [2019-11-07 00:35:56,084 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035884934] [2019-11-07 00:35:56,084 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:56,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 00:35:56,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:35:56,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 00:35:56,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:56,175 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:56,211 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [580820946] [2019-11-07 00:35:56,211 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:35:56,211 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:35:56,211 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:56,212 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2019-11-07 00:35:56,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713462524] [2019-11-07 00:35:56,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:35:56,213 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:56,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:35:56,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:35:56,214 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 11 states. [2019-11-07 00:35:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:56,262 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-07 00:35:56,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:35:56,263 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-11-07 00:35:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:56,264 INFO L225 Difference]: With dead ends: 36 [2019-11-07 00:35:56,264 INFO L226 Difference]: Without dead ends: 27 [2019-11-07 00:35:56,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:35:56,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-07 00:35:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-07 00:35:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-07 00:35:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-07 00:35:56,270 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2019-11-07 00:35:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:56,270 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-07 00:35:56,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:35:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-07 00:35:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-07 00:35:56,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:56,272 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:56,476 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:56,476 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash -971600090, now seen corresponding path program 2 times [2019-11-07 00:35:56,478 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:56,478 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222656430] [2019-11-07 00:35:56,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:35:56,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222656430] [2019-11-07 00:35:56,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569467622] [2019-11-07 00:35:56,714 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:56,743 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-07 00:35:56,743 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:35:56,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-07 00:35:56,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:56,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:56,983 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:57,279 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2085896815] [2019-11-07 00:35:57,279 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:35:57,280 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:35:57,280 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:57,280 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 30 [2019-11-07 00:35:57,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816405265] [2019-11-07 00:35:57,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-07 00:35:57,281 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-07 00:35:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:35:57,282 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 30 states. [2019-11-07 00:35:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:57,997 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-11-07 00:35:58,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 00:35:58,003 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 22 [2019-11-07 00:35:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:58,004 INFO L225 Difference]: With dead ends: 44 [2019-11-07 00:35:58,004 INFO L226 Difference]: Without dead ends: 38 [2019-11-07 00:35:58,010 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=288, Invalid=1604, Unknown=0, NotChecked=0, Total=1892 [2019-11-07 00:35:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-07 00:35:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-11-07 00:35:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-07 00:35:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-07 00:35:58,034 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2019-11-07 00:35:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:58,034 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-07 00:35:58,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-07 00:35:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-07 00:35:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 00:35:58,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:58,035 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:58,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:58,237 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash -131462049, now seen corresponding path program 3 times [2019-11-07 00:35:58,238 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:58,238 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485947313] [2019-11-07 00:35:58,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:58,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485947313] [2019-11-07 00:35:58,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834340860] [2019-11-07 00:35:58,334 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:58,372 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:35:58,372 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:35:58,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-07 00:35:58,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:58,443 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:58,509 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [802495661] [2019-11-07 00:35:58,509 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:35:58,509 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:35:58,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:58,510 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2019-11-07 00:35:58,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101298018] [2019-11-07 00:35:58,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:35:58,511 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:58,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:35:58,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=174, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:35:58,512 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 18 states. [2019-11-07 00:35:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:58,588 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-11-07 00:35:58,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:35:58,590 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2019-11-07 00:35:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:58,592 INFO L225 Difference]: With dead ends: 46 [2019-11-07 00:35:58,592 INFO L226 Difference]: Without dead ends: 37 [2019-11-07 00:35:58,593 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=174, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:35:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-07 00:35:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-07 00:35:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-07 00:35:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-07 00:35:58,598 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 26 [2019-11-07 00:35:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:58,598 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-07 00:35:58,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:35:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-07 00:35:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-07 00:35:58,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:58,600 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:58,803 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:58,803 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash -682200363, now seen corresponding path program 4 times [2019-11-07 00:35:58,805 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:58,805 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188262647] [2019-11-07 00:35:58,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 00:35:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 00:35:58,863 INFO L172 FreeRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-11-07 00:35:58,863 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-07 00:35:58,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:35:58 BoogieIcfgContainer [2019-11-07 00:35:58,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:35:58,904 INFO L168 Benchmark]: Toolchain (without parser) took 5765.61 ms. Allocated memory was 143.1 MB in the beginning and 250.1 MB in the end (delta: 107.0 MB). Free memory was 101.0 MB in the beginning and 165.5 MB in the end (delta: -64.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:58,905 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:35:58,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.00 ms. Allocated memory is still 143.1 MB. Free memory was 100.5 MB in the beginning and 91.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:58,907 INFO L168 Benchmark]: Boogie Preprocessor took 134.88 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 179.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:58,909 INFO L168 Benchmark]: RCFGBuilder took 271.96 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 167.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:58,911 INFO L168 Benchmark]: TraceAbstraction took 5080.41 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 167.5 MB in the beginning and 165.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:58,922 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.00 ms. Allocated memory is still 143.1 MB. Free memory was 100.5 MB in the beginning and 91.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.88 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 179.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.96 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 167.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5080.41 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 167.5 MB in the beginning and 165.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, j=10, n=6, n=0] [L13] COND TRUE i<=n VAL [i=1, j=10, n=0, n=6] [L14] COND TRUE i