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/init-4-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:38,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:38,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:38,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:38,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:38,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:38,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:38,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:38,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:38,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:38,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:38,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:38,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:38,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:38,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:38,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:38,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:38,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:38,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:38,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:38,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:38,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:38,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:38,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:38,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:38,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:38,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:38,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:38,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:38,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:38,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:38,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:38,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:38,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:38,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:38,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:38,197 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 23:52:38,214 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:38,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:38,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:38,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:38,216 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:38,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:38,217 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:38,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:38,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:38,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:38,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:38,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:38,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:38,218 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:38,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:38,218 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:38,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:38,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:38,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:38,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:38,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:38,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:38,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:38,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:38,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:38,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:38,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:38,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:38,221 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 23:52:38,517 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:38,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:38,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:38,546 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:38,546 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:38,547 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-4-n-u.c [2019-10-14 23:52:38,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9348c4a0e/78ff8c9e9ebd415280d1290d12037f72/FLAG2043c041a [2019-10-14 23:52:39,103 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:39,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-4-n-u.c [2019-10-14 23:52:39,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9348c4a0e/78ff8c9e9ebd415280d1290d12037f72/FLAG2043c041a [2019-10-14 23:52:39,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9348c4a0e/78ff8c9e9ebd415280d1290d12037f72 [2019-10-14 23:52:39,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:39,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:39,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:39,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:39,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:39,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e285c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39, skipping insertion in model container [2019-10-14 23:52:39,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,512 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:39,531 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:39,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:39,706 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:39,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:39,840 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:39,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39 WrapperNode [2019-10-14 23:52:39,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:39,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:39,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:39,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:39,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (1/1) ... [2019-10-14 23:52:39,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:39,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:39,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:39,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:39,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (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 23:52:39,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:39,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:39,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:39,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:39,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:39,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:39,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:40,293 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:40,293 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-14 23:52:40,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:40 BoogieIcfgContainer [2019-10-14 23:52:40,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:40,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:40,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:40,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:40,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:39" (1/3) ... [2019-10-14 23:52:40,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee272cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:40, skipping insertion in model container [2019-10-14 23:52:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:39" (2/3) ... [2019-10-14 23:52:40,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee272cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:40, skipping insertion in model container [2019-10-14 23:52:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:40" (3/3) ... [2019-10-14 23:52:40,308 INFO L109 eAbstractionObserver]: Analyzing ICFG init-4-n-u.c [2019-10-14 23:52:40,318 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:40,326 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:40,338 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:40,363 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:40,364 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:40,364 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:40,364 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:40,364 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:40,364 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:40,364 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:40,365 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-14 23:52:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:52:40,387 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:40,388 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:40,390 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:40,394 INFO L82 PathProgramCache]: Analyzing trace with hash -129587761, now seen corresponding path program 1 times [2019-10-14 23:52:40,402 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:40,402 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134956314] [2019-10-14 23:52:40,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:40,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:40,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:40,485 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:40,486 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997369027] [2019-10-14 23:52:40,486 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 23:52:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:40,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:52:40,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:40,576 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 23:52:40,577 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:40,604 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 23:52:40,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134956314] [2019-10-14 23:52:40,605 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:40,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997369027] [2019-10-14 23:52:40,606 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:40,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-14 23:52:40,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915784962] [2019-10-14 23:52:40,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:40,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:40,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:40,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:40,635 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-10-14 23:52:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:40,665 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2019-10-14 23:52:40,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:40,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-14 23:52:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:40,677 INFO L225 Difference]: With dead ends: 62 [2019-10-14 23:52:40,677 INFO L226 Difference]: Without dead ends: 29 [2019-10-14 23:52:40,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 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 23:52:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-14 23:52:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-14 23:52:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-14 23:52:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-10-14 23:52:40,731 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2019-10-14 23:52:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:40,732 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-10-14 23:52:40,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-10-14 23:52:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:52:40,734 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:40,734 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:40,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:40,938 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:40,939 INFO L82 PathProgramCache]: Analyzing trace with hash -269441638, now seen corresponding path program 1 times [2019-10-14 23:52:40,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:40,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037974635] [2019-10-14 23:52:40,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:40,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:40,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:40,950 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:40,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493747993] [2019-10-14 23:52:40,951 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 23:52:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:41,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:41,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:41,068 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 23:52:41,069 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:41,086 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 23:52:41,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037974635] [2019-10-14 23:52:41,087 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:41,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493747993] [2019-10-14 23:52:41,088 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:41,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-14 23:52:41,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686445200] [2019-10-14 23:52:41,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:52:41,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:41,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:52:41,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:52:41,092 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 4 states. [2019-10-14 23:52:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:41,151 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-10-14 23:52:41,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:52:41,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-14 23:52:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:41,153 INFO L225 Difference]: With dead ends: 53 [2019-10-14 23:52:41,154 INFO L226 Difference]: Without dead ends: 37 [2019-10-14 23:52:41,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 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 23:52:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-14 23:52:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-14 23:52:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-14 23:52:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-10-14 23:52:41,165 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 16 [2019-10-14 23:52:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:41,165 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-14 23:52:41,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:52:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-10-14 23:52:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-14 23:52:41,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:41,167 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:41,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:41,371 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:41,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1690643674, now seen corresponding path program 1 times [2019-10-14 23:52:41,373 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:41,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995233850] [2019-10-14 23:52:41,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:41,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:41,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:41,383 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:41,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009552608] [2019-10-14 23:52:41,383 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 23:52:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:41,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:41,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:41,459 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 23:52:41,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:41,485 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 23:52:41,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995233850] [2019-10-14 23:52:41,486 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:41,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009552608] [2019-10-14 23:52:41,487 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:41,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-14 23:52:41,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343908610] [2019-10-14 23:52:41,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:52:41,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:52:41,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:41,489 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 6 states. [2019-10-14 23:52:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:41,638 INFO L93 Difference]: Finished difference Result 83 states and 113 transitions. [2019-10-14 23:52:41,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:52:41,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-14 23:52:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:41,642 INFO L225 Difference]: With dead ends: 83 [2019-10-14 23:52:41,642 INFO L226 Difference]: Without dead ends: 58 [2019-10-14 23:52:41,643 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 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 23:52:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-14 23:52:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-10-14 23:52:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-14 23:52:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2019-10-14 23:52:41,660 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 22 [2019-10-14 23:52:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:41,661 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2019-10-14 23:52:41,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:52:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2019-10-14 23:52:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-14 23:52:41,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:41,663 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:41,874 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:41,875 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:41,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1333640026, now seen corresponding path program 1 times [2019-10-14 23:52:41,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:41,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142270038] [2019-10-14 23:52:41,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:41,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:41,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:41,887 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:41,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480018861] [2019-10-14 23:52:41,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-14 23:52:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:41,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:41,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:52:41,988 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:52:42,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142270038] [2019-10-14 23:52:42,022 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:42,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480018861] [2019-10-14 23:52:42,022 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:42,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-14 23:52:42,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60891101] [2019-10-14 23:52:42,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:52:42,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:42,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:52:42,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:42,024 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 6 states. [2019-10-14 23:52:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:42,133 INFO L93 Difference]: Finished difference Result 132 states and 184 transitions. [2019-10-14 23:52:42,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:52:42,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-14 23:52:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:42,136 INFO L225 Difference]: With dead ends: 132 [2019-10-14 23:52:42,136 INFO L226 Difference]: Without dead ends: 86 [2019-10-14 23:52:42,137 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 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 23:52:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-14 23:52:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-10-14 23:52:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-14 23:52:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2019-10-14 23:52:42,154 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 34 [2019-10-14 23:52:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:42,155 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2019-10-14 23:52:42,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:52:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2019-10-14 23:52:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:52:42,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:42,157 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:42,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:42,365 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash -423896998, now seen corresponding path program 1 times [2019-10-14 23:52:42,365 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:42,366 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297385623] [2019-10-14 23:52:42,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:42,386 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:42,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507989487] [2019-10-14 23:52:42,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:42,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:42,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-10-14 23:52:42,492 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-10-14 23:52:42,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297385623] [2019-10-14 23:52:42,515 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:42,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507989487] [2019-10-14 23:52:42,515 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:42,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-14 23:52:42,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211015792] [2019-10-14 23:52:42,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:52:42,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:42,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:52:42,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:52:42,518 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand 6 states. [2019-10-14 23:52:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:42,596 INFO L93 Difference]: Finished difference Result 193 states and 270 transitions. [2019-10-14 23:52:42,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:52:42,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2019-10-14 23:52:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:42,598 INFO L225 Difference]: With dead ends: 193 [2019-10-14 23:52:42,599 INFO L226 Difference]: Without dead ends: 118 [2019-10-14 23:52:42,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 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 23:52:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-14 23:52:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2019-10-14 23:52:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-14 23:52:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2019-10-14 23:52:42,621 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 58 [2019-10-14 23:52:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:42,621 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2019-10-14 23:52:42,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:52:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2019-10-14 23:52:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-14 23:52:42,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:42,624 INFO L380 BasicCegarLoop]: trace histogram [16, 8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:42,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:42,836 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1979618906, now seen corresponding path program 1 times [2019-10-14 23:52:42,837 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:42,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367092155] [2019-10-14 23:52:42,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:42,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:42,851 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:52:42,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488000724] [2019-10-14 23:52:42,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:42,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:52:42,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2019-10-14 23:52:42,985 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2019-10-14 23:52:43,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367092155] [2019-10-14 23:52:43,034 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:52:43,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488000724] [2019-10-14 23:52:43,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [298438449] [2019-10-14 23:52:43,042 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 75 [2019-10-14 23:52:43,077 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:43,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:43,132 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:43,133 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 25 variables. [2019-10-14 23:52:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:43,137 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:43,198 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:43,199 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:43,202 INFO L553 sIntCurrentIteration]: We unified 73 AI predicates to 73 [2019-10-14 23:52:43,202 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:43,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:52:43,203 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-14 23:52:43,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824134229] [2019-10-14 23:52:43,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:43,205 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:43,205 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:43,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:43,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:43,206 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand 2 states. [2019-10-14 23:52:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:43,211 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2019-10-14 23:52:43,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:43,211 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-14 23:52:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:43,212 INFO L225 Difference]: With dead ends: 117 [2019-10-14 23:52:43,212 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:43,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 23:52:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:43,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2019-10-14 23:52:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:43,215 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:43,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:43,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:43,419 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:43,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:43,460 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,460 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:43,461 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,461 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,461 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:43,461 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:43,461 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:43,462 INFO L439 ceAbstractionStarter]: At program point L60(line 60) the Hoare annotation is: false [2019-10-14 23:52:43,462 INFO L443 ceAbstractionStarter]: For program point L60-1(line 60) no Hoare annotation was computed. [2019-10-14 23:52:43,462 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 72) no Hoare annotation was computed. [2019-10-14 23:52:43,462 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 32 39) the Hoare annotation is: false [2019-10-14 23:52:43,462 INFO L443 ceAbstractionStarter]: For program point L32-3(lines 32 39) no Hoare annotation was computed. [2019-10-14 23:52:43,462 INFO L439 ceAbstractionStarter]: At program point L57-2(lines 57 64) the Hoare annotation is: false [2019-10-14 23:52:43,463 INFO L443 ceAbstractionStarter]: For program point L57-3(lines 57 64) no Hoare annotation was computed. [2019-10-14 23:52:43,463 INFO L439 ceAbstractionStarter]: At program point L29-2(lines 29 41) the Hoare annotation is: false [2019-10-14 23:52:43,463 INFO L443 ceAbstractionStarter]: For program point L29-3(lines 29 41) no Hoare annotation was computed. [2019-10-14 23:52:43,463 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 43) the Hoare annotation is: false [2019-10-14 23:52:43,463 INFO L443 ceAbstractionStarter]: For program point L25-3(lines 25 43) no Hoare annotation was computed. [2019-10-14 23:52:43,464 INFO L439 ceAbstractionStarter]: At program point L54-2(lines 54 66) the Hoare annotation is: false [2019-10-14 23:52:43,464 INFO L443 ceAbstractionStarter]: For program point L54-3(lines 54 66) no Hoare annotation was computed. [2019-10-14 23:52:43,464 INFO L439 ceAbstractionStarter]: At program point L50-2(lines 50 68) the Hoare annotation is: false [2019-10-14 23:52:43,464 INFO L443 ceAbstractionStarter]: For program point L50-3(lines 50 68) no Hoare annotation was computed. [2019-10-14 23:52:43,464 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 72) no Hoare annotation was computed. [2019-10-14 23:52:43,465 INFO L439 ceAbstractionStarter]: At program point L34-2(lines 34 37) the Hoare annotation is: false [2019-10-14 23:52:43,465 INFO L443 ceAbstractionStarter]: For program point L34-3(lines 34 37) no Hoare annotation was computed. [2019-10-14 23:52:43,465 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 72) the Hoare annotation is: true [2019-10-14 23:52:43,465 INFO L439 ceAbstractionStarter]: At program point L59-2(lines 59 62) the Hoare annotation is: false [2019-10-14 23:52:43,465 INFO L443 ceAbstractionStarter]: For program point L59-3(lines 59 62) no Hoare annotation was computed. [2019-10-14 23:52:43,466 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:52:43,466 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:52:43,466 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:52:43,466 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:52:43,466 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:52:43,467 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:52:43,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:43 BoogieIcfgContainer [2019-10-14 23:52:43,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:43,479 INFO L168 Benchmark]: Toolchain (without parser) took 3983.08 ms. Allocated memory was 134.7 MB in the beginning and 225.4 MB in the end (delta: 90.7 MB). Free memory was 98.7 MB in the beginning and 73.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 115.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,480 INFO L168 Benchmark]: CDTParser took 1.26 ms. Allocated memory is still 134.7 MB. Free memory was 116.7 MB in the beginning and 116.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.61 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 98.5 MB in the beginning and 179.0 MB in the end (delta: -80.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,482 INFO L168 Benchmark]: Boogie Preprocessor took 45.31 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 176.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,482 INFO L168 Benchmark]: RCFGBuilder took 408.24 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 159.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,483 INFO L168 Benchmark]: TraceAbstraction took 3175.30 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 159.0 MB in the beginning and 73.5 MB in the end (delta: 85.5 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:43,487 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26 ms. Allocated memory is still 134.7 MB. Free memory was 116.7 MB in the beginning and 116.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.61 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 98.5 MB in the beginning and 179.0 MB in the end (delta: -80.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.31 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 176.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.24 ms. Allocated memory is still 199.8 MB. Free memory was 176.4 MB in the beginning and 159.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3175.30 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 159.0 MB in the beginning and 73.5 MB in the end (delta: 85.5 MB). Peak memory consumption was 111.1 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: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Result: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 16, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 173 SDslu, 183 SDs, 0 SdLazy, 70 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=5, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 30 PreInvPairs, 30 NumberOfFragments, 14 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 26076 SizeOfPredicates, 10 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 1150/1156 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 96, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9623287671232876, AVG_VARS_REMOVED_DURING_WEAKENING: 0.6575342465753424, AVG_WEAKENED_CONJUNCTS: 0.0821917808219178, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...