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-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:40,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:40,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:40,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:40,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:40,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:40,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:40,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:40,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:40,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:40,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:40,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:40,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:40,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:40,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:40,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:40,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:40,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:40,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:40,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:40,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:40,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:40,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:40,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:40,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:53:40,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:53:40,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:53:40,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:53:40,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:53:40,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:53:40,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:53:40,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:53:40,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:53:40,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:53:40,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:53:40,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:53:40,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:53:40,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:53:40,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:40,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:40,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:40,627 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 [2019-10-13 19:53:40,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:40,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:40,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:40,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:40,643 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:40,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:40,643 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:40,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:40,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:40,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:40,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:40,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:40,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:40,645 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:40,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:40,645 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:40,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:40,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:40,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:40,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:40,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:40,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:40,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:40,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:40,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:40,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:40,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:40,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:40,648 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 [2019-10-13 19:53:40,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:40,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:40,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:40,981 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:40,982 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:40,982 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-2-n-u.c [2019-10-13 19:53:41,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86230534/32a8cbaf753a4332a7695451ccd9a7be/FLAG53c1fc39e [2019-10-13 19:53:41,470 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:41,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-2-n-u.c [2019-10-13 19:53:41,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86230534/32a8cbaf753a4332a7695451ccd9a7be/FLAG53c1fc39e [2019-10-13 19:53:41,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86230534/32a8cbaf753a4332a7695451ccd9a7be [2019-10-13 19:53:41,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:41,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:41,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:41,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:41,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:41,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358a6207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41, skipping insertion in model container [2019-10-13 19:53:41,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:41,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:42,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:42,124 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:42,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:42,172 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:42,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42 WrapperNode [2019-10-13 19:53:42,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:42,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:42,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:42,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:42,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:42,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:42,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:42,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:42,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (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 [2019-10-13 19:53:42,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:42,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:42,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:42,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:42,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:42,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:42,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:42,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:42,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:42,667 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:42,668 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:53:42,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:42 BoogieIcfgContainer [2019-10-13 19:53:42,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:42,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:42,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:42,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:42,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:41" (1/3) ... [2019-10-13 19:53:42,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24516d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (2/3) ... [2019-10-13 19:53:42,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24516d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:42" (3/3) ... [2019-10-13 19:53:42,678 INFO L109 eAbstractionObserver]: Analyzing ICFG init-2-n-u.c [2019-10-13 19:53:42,690 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:42,702 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:42,714 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:42,748 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:42,748 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:42,748 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:42,751 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:42,751 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:42,752 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:42,752 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:42,752 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-13 19:53:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:53:42,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:42,800 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:42,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:42,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1832694891, now seen corresponding path program 1 times [2019-10-13 19:53:42,823 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:42,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806031461] [2019-10-13 19:53:42,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:42,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:42,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:42,921 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:42,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003365246] [2019-10-13 19:53:42,922 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 [2019-10-13 19:53:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:43,071 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:43,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806031461] [2019-10-13 19:53:43,105 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:43,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003365246] [2019-10-13 19:53:43,106 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:43,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 19:53:43,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512169092] [2019-10-13 19:53:43,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:53:43,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:53:43,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:43,135 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2019-10-13 19:53:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:43,220 INFO L93 Difference]: Finished difference Result 50 states and 73 transitions. [2019-10-13 19:53:43,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:53:43,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 19:53:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:43,234 INFO L225 Difference]: With dead ends: 50 [2019-10-13 19:53:43,235 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 19:53:43,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 19:53:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 19:53:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 19:53:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 19:53:43,301 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2019-10-13 19:53:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:43,302 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 19:53:43,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:53:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 19:53:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:53:43,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:43,304 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:43,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,518 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:43,519 INFO L82 PathProgramCache]: Analyzing trace with hash 108430059, now seen corresponding path program 1 times [2019-10-13 19:53:43,520 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:43,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262124281] [2019-10-13 19:53:43,520 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,521 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,533 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826018232] [2019-10-13 19:53:43,533 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 [2019-10-13 19:53:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:43,614 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:43,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262124281] [2019-10-13 19:53:43,646 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:43,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826018232] [2019-10-13 19:53:43,647 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:43,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:43,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817659770] [2019-10-13 19:53:43,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:43,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:43,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:43,650 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 6 states. [2019-10-13 19:53:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:43,728 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2019-10-13 19:53:43,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:43,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-10-13 19:53:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:43,731 INFO L225 Difference]: With dead ends: 51 [2019-10-13 19:53:43,732 INFO L226 Difference]: Without dead ends: 34 [2019-10-13 19:53:43,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:53:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-13 19:53:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-13 19:53:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 19:53:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-13 19:53:43,746 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 20 [2019-10-13 19:53:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:43,746 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-13 19:53:43,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-13 19:53:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:53:43,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:43,748 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:43,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,952 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1208856043, now seen corresponding path program 1 times [2019-10-13 19:53:43,953 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:43,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540763697] [2019-10-13 19:53:43,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,960 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986051996] [2019-10-13 19:53:43,961 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 [2019-10-13 19:53:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:44,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:53:44,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 19:53:44,084 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 19:53:44,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540763697] [2019-10-13 19:53:44,150 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:44,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986051996] [2019-10-13 19:53:44,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [729644499] [2019-10-13 19:53:44,185 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 25 [2019-10-13 19:53:44,245 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:44,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:44,306 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:44,307 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 21 variables. [2019-10-13 19:53:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:44,312 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:44,355 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:44,355 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:44,357 INFO L553 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-10-13 19:53:44,357 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:44,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:53:44,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-13 19:53:44,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208517633] [2019-10-13 19:53:44,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:44,360 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:44,360 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:44,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:44,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:44,361 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 2 states. [2019-10-13 19:53:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:44,364 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-13 19:53:44,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:44,365 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-10-13 19:53:44,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:44,365 INFO L225 Difference]: With dead ends: 33 [2019-10-13 19:53:44,365 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:44,366 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:44,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-10-13 19:53:44,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:44,367 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:44,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:44,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:44,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:44,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:44,625 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:44,625 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:44,625 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:44,625 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:44,625 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:44,625 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:44,626 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:44,626 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 47) no Hoare annotation was computed. [2019-10-13 19:53:44,626 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 27) the Hoare annotation is: false [2019-10-13 19:53:44,626 INFO L443 ceAbstractionStarter]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2019-10-13 19:53:44,626 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 36 40) the Hoare annotation is: false [2019-10-13 19:53:44,626 INFO L443 ceAbstractionStarter]: For program point L36-3(lines 36 40) no Hoare annotation was computed. [2019-10-13 19:53:44,627 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 29) the Hoare annotation is: false [2019-10-13 19:53:44,627 INFO L443 ceAbstractionStarter]: For program point L21-3(lines 21 29) no Hoare annotation was computed. [2019-10-13 19:53:44,627 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 47) no Hoare annotation was computed. [2019-10-13 19:53:44,627 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: false [2019-10-13 19:53:44,627 INFO L443 ceAbstractionStarter]: For program point L38-1(line 38) no Hoare annotation was computed. [2019-10-13 19:53:44,627 INFO L439 ceAbstractionStarter]: At program point L34-2(lines 34 42) the Hoare annotation is: false [2019-10-13 19:53:44,627 INFO L443 ceAbstractionStarter]: For program point L34-3(lines 34 42) no Hoare annotation was computed. [2019-10-13 19:53:44,628 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 47) the Hoare annotation is: true [2019-10-13 19:53:44,628 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 19:53:44,628 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:44,628 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 19:53:44,628 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 19:53:44,628 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 19:53:44,628 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:44,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:44 BoogieIcfgContainer [2019-10-13 19:53:44,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:44,651 INFO L168 Benchmark]: Toolchain (without parser) took 2733.75 ms. Allocated memory was 145.2 MB in the beginning and 233.3 MB in the end (delta: 88.1 MB). Free memory was 103.8 MB in the beginning and 187.9 MB in the end (delta: -84.2 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:44,652 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:44,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.62 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:44,654 INFO L168 Benchmark]: Boogie Preprocessor took 205.56 ms. Allocated memory was 145.2 MB in the beginning and 206.6 MB in the end (delta: 61.3 MB). Free memory was 93.5 MB in the beginning and 184.1 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:44,655 INFO L168 Benchmark]: RCFGBuilder took 289.92 ms. Allocated memory is still 206.6 MB. Free memory was 184.1 MB in the beginning and 169.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:44,656 INFO L168 Benchmark]: TraceAbstraction took 1974.06 ms. Allocated memory was 206.6 MB in the beginning and 233.3 MB in the end (delta: 26.7 MB). Free memory was 169.7 MB in the beginning and 187.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:44,660 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.62 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 205.56 ms. Allocated memory was 145.2 MB in the beginning and 206.6 MB in the end (delta: 61.3 MB). Free memory was 93.5 MB in the beginning and 184.1 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.92 ms. Allocated memory is still 206.6 MB. Free memory was 184.1 MB in the beginning and 169.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1974.06 ms. Allocated memory was 206.6 MB in the beginning and 233.3 MB in the end (delta: 26.7 MB). Free memory was 169.7 MB in the beginning and 187.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 8.5 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: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 26 SDslu, 69 SDs, 0 SdLazy, 33 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 10 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 3186 SizeOfPredicates, 6 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 128, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9239130434782609, AVG_VARS_REMOVED_DURING_WEAKENING: 0.7391304347826086, AVG_WEAKENED_CONJUNCTS: 0.2608695652173913, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...