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-multidimensional/diff-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:36,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:36,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:36,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:36,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:36,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:36,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:37,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:37,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:37,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:37,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:37,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:37,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:37,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:37,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:37,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:37,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:37,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:37,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:37,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:37,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:37,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:37,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:37,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:37,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:37,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:37,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:37,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:37,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:37,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:37,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:37,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:37,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:37,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:37,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:37,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:37,055 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 23:52:37,088 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:37,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:37,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:37,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:37,094 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:37,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:37,094 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:37,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:37,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:37,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:37,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:37,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:37,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:37,098 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:37,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:37,098 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:37,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:37,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:37,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:37,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:37,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:37,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:37,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:37,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:37,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:37,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:37,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:37,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:37,101 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 23:52:37,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:37,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:37,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:37,395 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:37,396 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:37,396 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c [2019-10-14 23:52:37,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60969e0cc/dd3e072900a745f59a68f63781df95e9/FLAG243e0203c [2019-10-14 23:52:37,974 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:37,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/diff-2-n-u.c [2019-10-14 23:52:37,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60969e0cc/dd3e072900a745f59a68f63781df95e9/FLAG243e0203c [2019-10-14 23:52:38,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60969e0cc/dd3e072900a745f59a68f63781df95e9 [2019-10-14 23:52:38,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:38,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:38,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:38,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:38,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:38,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7745b351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38, skipping insertion in model container [2019-10-14 23:52:38,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,340 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:38,369 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:38,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:38,605 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:38,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:38,738 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:38,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38 WrapperNode [2019-10-14 23:52:38,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:38,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:38,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:38,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:38,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (1/1) ... [2019-10-14 23:52:38,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:38,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:38,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:38,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:38,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (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 23:52:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 23:52:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:38,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:38,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:39,202 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:39,203 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-14 23:52:39,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:39 BoogieIcfgContainer [2019-10-14 23:52:39,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:39,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:39,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:39,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:39,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:38" (1/3) ... [2019-10-14 23:52:39,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3e4eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:39, skipping insertion in model container [2019-10-14 23:52:39,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:38" (2/3) ... [2019-10-14 23:52:39,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3e4eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:39, skipping insertion in model container [2019-10-14 23:52:39,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:39" (3/3) ... [2019-10-14 23:52:39,212 INFO L109 eAbstractionObserver]: Analyzing ICFG diff-2-n-u.c [2019-10-14 23:52:39,222 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:39,228 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:39,237 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:39,259 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:39,260 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:39,260 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:39,260 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:39,261 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:39,261 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:39,261 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:39,262 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-14 23:52:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:52:39,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:39,282 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:39,285 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash 94592989, now seen corresponding path program 1 times [2019-10-14 23:52:39,297 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:39,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460922250] [2019-10-14 23:52:39,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:39,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:39,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:39,385 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:39,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078695265] [2019-10-14 23:52:39,386 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 23:52:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:39,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:39,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:39,525 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 23:52:39,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:39,549 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 23:52:39,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460922250] [2019-10-14 23:52:39,550 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:39,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078695265] [2019-10-14 23:52:39,551 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:39,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-14 23:52:39,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405076963] [2019-10-14 23:52:39,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:52:39,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:39,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:52:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:39,577 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-10-14 23:52:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:39,700 INFO L93 Difference]: Finished difference Result 66 states and 105 transitions. [2019-10-14 23:52:39,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:52:39,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-14 23:52:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:39,710 INFO L225 Difference]: With dead ends: 66 [2019-10-14 23:52:39,710 INFO L226 Difference]: Without dead ends: 33 [2019-10-14 23:52:39,714 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-14 23:52:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-14 23:52:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-14 23:52:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-10-14 23:52:39,753 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 18 [2019-10-14 23:52:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:39,754 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-10-14 23:52:39,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:52:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2019-10-14 23:52:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:52:39,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:39,757 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:39,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:39,966 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1968432477, now seen corresponding path program 1 times [2019-10-14 23:52:39,967 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:39,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369357433] [2019-10-14 23:52:39,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:39,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:39,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:39,980 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:39,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985952886] [2019-10-14 23:52:39,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -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 [2019-10-14 23:52:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:40,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:40,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:40,066 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:52:40,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369357433] [2019-10-14 23:52:40,097 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:40,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985952886] [2019-10-14 23:52:40,097 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:40,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-14 23:52:40,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218655823] [2019-10-14 23:52:40,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:52:40,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:52:40,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:40,101 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 6 states. [2019-10-14 23:52:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:40,291 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2019-10-14 23:52:40,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:52:40,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-14 23:52:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:40,298 INFO L225 Difference]: With dead ends: 75 [2019-10-14 23:52:40,299 INFO L226 Difference]: Without dead ends: 50 [2019-10-14 23:52:40,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:52:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-14 23:52:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-10-14 23:52:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-14 23:52:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2019-10-14 23:52:40,333 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2019-10-14 23:52:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:40,334 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2019-10-14 23:52:40,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:52:40,334 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2019-10-14 23:52:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:52:40,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:40,337 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:40,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:40,539 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:40,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1716434339, now seen corresponding path program 1 times [2019-10-14 23:52:40,540 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:40,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209486556] [2019-10-14 23:52:40,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:40,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:40,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:40,577 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:40,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091652212] [2019-10-14 23:52:40,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -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 [2019-10-14 23:52:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:40,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:52:40,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:52:40,682 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:52:40,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209486556] [2019-10-14 23:52:40,731 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:40,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091652212] [2019-10-14 23:52:40,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2021022563] [2019-10-14 23:52:40,738 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 29 [2019-10-14 23:52:40,771 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:40,771 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:40,830 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:40,832 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 0. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 27 variables. [2019-10-14 23:52:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:40,836 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:40,875 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:40,875 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:40,877 INFO L553 sIntCurrentIteration]: We unified 27 AI predicates to 27 [2019-10-14 23:52:40,877 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:40,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:52:40,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-14 23:52:40,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961072599] [2019-10-14 23:52:40,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:40,879 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:40,880 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:40,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:40,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:40,880 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 2 states. [2019-10-14 23:52:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:40,885 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-10-14 23:52:40,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:40,885 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2019-10-14 23:52:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:40,886 INFO L225 Difference]: With dead ends: 45 [2019-10-14 23:52:40,886 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:40,886 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 23:52:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:40,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-10-14 23:52:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:40,888 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:40,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:40,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:41,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:41,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:41,137 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:41,137 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:41,138 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:41,138 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:41,138 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:41,138 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:41,138 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:41,138 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 78) no Hoare annotation was computed. [2019-10-14 23:52:41,138 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 36 45) the Hoare annotation is: false [2019-10-14 23:52:41,139 INFO L443 ceAbstractionStarter]: For program point L36-3(lines 36 45) no Hoare annotation was computed. [2019-10-14 23:52:41,139 INFO L439 ceAbstractionStarter]: At program point L65-2(lines 65 73) the Hoare annotation is: false [2019-10-14 23:52:41,139 INFO L443 ceAbstractionStarter]: For program point L65-3(lines 65 73) no Hoare annotation was computed. [2019-10-14 23:52:41,139 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: false [2019-10-14 23:52:41,139 INFO L443 ceAbstractionStarter]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2019-10-14 23:52:41,139 INFO L439 ceAbstractionStarter]: At program point L53-2(lines 53 57) the Hoare annotation is: false [2019-10-14 23:52:41,140 INFO L443 ceAbstractionStarter]: For program point L53-3(lines 53 57) no Hoare annotation was computed. [2019-10-14 23:52:41,140 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 78) no Hoare annotation was computed. [2019-10-14 23:52:41,140 INFO L439 ceAbstractionStarter]: At program point L38-2(lines 38 43) the Hoare annotation is: false [2019-10-14 23:52:41,141 INFO L443 ceAbstractionStarter]: For program point L38-3(lines 38 43) no Hoare annotation was computed. [2019-10-14 23:52:41,141 INFO L439 ceAbstractionStarter]: At program point L67-2(lines 67 71) the Hoare annotation is: false [2019-10-14 23:52:41,142 INFO L443 ceAbstractionStarter]: For program point L67-3(lines 67 71) no Hoare annotation was computed. [2019-10-14 23:52:41,142 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 78) the Hoare annotation is: true [2019-10-14 23:52:41,142 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 31) the Hoare annotation is: false [2019-10-14 23:52:41,142 INFO L443 ceAbstractionStarter]: For program point L22-3(lines 22 31) no Hoare annotation was computed. [2019-10-14 23:52:41,142 INFO L439 ceAbstractionStarter]: At program point L51-2(lines 51 59) the Hoare annotation is: false [2019-10-14 23:52:41,142 INFO L443 ceAbstractionStarter]: For program point L51-3(lines 51 59) no Hoare annotation was computed. [2019-10-14 23:52:41,142 INFO L439 ceAbstractionStarter]: At program point L68(line 68) the Hoare annotation is: false [2019-10-14 23:52:41,143 INFO L443 ceAbstractionStarter]: For program point L68-1(line 68) no Hoare annotation was computed. [2019-10-14 23:52:41,143 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:52:41,143 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:52:41,143 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:52:41,143 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:52:41,144 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:52:41,144 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:52:41,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:41 BoogieIcfgContainer [2019-10-14 23:52:41,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:41,155 INFO L168 Benchmark]: Toolchain (without parser) took 2833.47 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 104.0 MB in the beginning and 166.8 MB in the end (delta: -62.8 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:41,156 INFO L168 Benchmark]: CDTParser took 1.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:41,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.33 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.8 MB in the beginning and 182.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:41,160 INFO L168 Benchmark]: Boogie Preprocessor took 62.79 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:41,162 INFO L168 Benchmark]: RCFGBuilder took 401.65 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 161.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:41,164 INFO L168 Benchmark]: TraceAbstraction took 1947.06 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 161.2 MB in the beginning and 166.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:41,171 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.33 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.8 MB in the beginning and 182.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.79 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.65 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 161.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1947.06 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 161.2 MB in the beginning and 166.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 81 SDslu, 71 SDs, 0 SdLazy, 67 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 14 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 4370 SizeOfPredicates, 6 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 99, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9074074074074074, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9629629629629629, AVG_WEAKENED_CONJUNCTS: 0.2222222222222222, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...