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-tiling/rewnifrev2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:56,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:56,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:56,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:56,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:56,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:56,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:56,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:56,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:56,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:56,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:56,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:56,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:56,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:56,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:56,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:56,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:56,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:56,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:56,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:56,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:56,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:56,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:56,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:56,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:52:56,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:52:56,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:52:56,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:52:56,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:52:56,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:52:56,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:56,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:56,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:56,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:56,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:56,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:56,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:56,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:56,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:56,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:56,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:56,924 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 23:52:56,938 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:56,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:56,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:56,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:56,940 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:56,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:56,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:56,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:56,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:56,942 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:56,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:56,942 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:56,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:56,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:56,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:56,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:56,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:56,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:56,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:56,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:56,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:56,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:56,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:56,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:56,945 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 23:52:57,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:57,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:57,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:57,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:57,244 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:57,245 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-10-14 23:52:57,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac410123e/cd18bbdc72ab45b8ab256291360e5b57/FLAGe8623d387 [2019-10-14 23:52:57,779 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:57,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-10-14 23:52:57,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac410123e/cd18bbdc72ab45b8ab256291360e5b57/FLAGe8623d387 [2019-10-14 23:52:58,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac410123e/cd18bbdc72ab45b8ab256291360e5b57 [2019-10-14 23:52:58,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:58,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:58,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:58,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:58,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:58,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc683dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58, skipping insertion in model container [2019-10-14 23:52:58,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,171 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:58,192 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:58,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:58,412 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:58,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:58,456 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:58,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58 WrapperNode [2019-10-14 23:52:58,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:58,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:58,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:58,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:58,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (1/1) ... [2019-10-14 23:52:58,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:58,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:58,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:58,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:58,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (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 23:52:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:52:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:52:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:52:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:58,899 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:58,900 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:52:58,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:58 BoogieIcfgContainer [2019-10-14 23:52:58,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:58,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:58,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:58,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:58,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:58" (1/3) ... [2019-10-14 23:52:58,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75844bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:58, skipping insertion in model container [2019-10-14 23:52:58,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:58" (2/3) ... [2019-10-14 23:52:58,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75844bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:58, skipping insertion in model container [2019-10-14 23:52:58,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:58" (3/3) ... [2019-10-14 23:52:58,922 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnifrev2.c [2019-10-14 23:52:58,934 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:58,942 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:58,954 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:58,986 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:58,987 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:58,987 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:58,987 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:58,987 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:58,987 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:58,988 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:58,988 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-14 23:52:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:52:59,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:59,017 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:59,020 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:59,025 INFO L82 PathProgramCache]: Analyzing trace with hash -516860939, now seen corresponding path program 1 times [2019-10-14 23:52:59,032 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995579775] [2019-10-14 23:52:59,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:59,166 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 23:52:59,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995579775] [2019-10-14 23:52:59,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:59,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:59,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627888742] [2019-10-14 23:52:59,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:59,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:59,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:59,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:59,194 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-14 23:52:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:59,219 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-10-14 23:52:59,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:59,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-14 23:52:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:59,236 INFO L225 Difference]: With dead ends: 41 [2019-10-14 23:52:59,236 INFO L226 Difference]: Without dead ends: 20 [2019-10-14 23:52:59,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-14 23:52:59,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-14 23:52:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-14 23:52:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-14 23:52:59,282 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-10-14 23:52:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:59,282 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-14 23:52:59,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-14 23:52:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:52:59,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:59,285 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:59,286 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:59,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1546915729, now seen corresponding path program 1 times [2019-10-14 23:52:59,288 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964349890] [2019-10-14 23:52:59,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:59,374 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 23:52:59,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964349890] [2019-10-14 23:52:59,375 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:59,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:59,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778520933] [2019-10-14 23:52:59,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:59,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:59,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:59,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:59,379 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2019-10-14 23:52:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:59,437 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-10-14 23:52:59,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:59,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-14 23:52:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:59,439 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:52:59,439 INFO L226 Difference]: Without dead ends: 21 [2019-10-14 23:52:59,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-14 23:52:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-14 23:52:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-14 23:52:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-14 23:52:59,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-10-14 23:52:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:59,447 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-14 23:52:59,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-14 23:52:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:52:59,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:59,451 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:59,452 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:59,453 INFO L82 PathProgramCache]: Analyzing trace with hash -586037587, now seen corresponding path program 1 times [2019-10-14 23:52:59,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:59,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351302516] [2019-10-14 23:52:59,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:59,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:59,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351302516] [2019-10-14 23:52:59,832 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:59,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:52:59,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52894059] [2019-10-14 23:52:59,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:52:59,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:59,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:52:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:52:59,834 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2019-10-14 23:52:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:59,998 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-10-14 23:52:59,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:52:59,998 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-10-14 23:52:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:00,000 INFO L225 Difference]: With dead ends: 31 [2019-10-14 23:53:00,000 INFO L226 Difference]: Without dead ends: 29 [2019-10-14 23:53:00,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:53:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-14 23:53:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-14 23:53:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:53:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-10-14 23:53:00,009 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-10-14 23:53:00,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:00,010 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-10-14 23:53:00,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:53:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-10-14 23:53:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:53:00,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:53:00,012 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:53:00,012 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:53:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:00,013 INFO L82 PathProgramCache]: Analyzing trace with hash -798788415, now seen corresponding path program 1 times [2019-10-14 23:53:00,013 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:53:00,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038360961] [2019-10-14 23:53:00,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:00,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:53:00,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:53:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:00,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038360961] [2019-10-14 23:53:00,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615313530] [2019-10-14 23:53:00,276 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 23:53:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:53:00,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-14 23:53:00,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:53:00,418 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:53:00,451 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-10-14 23:53:00,452 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2019-10-14 23:53:00,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:53:00,467 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:53:00,468 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:53:00,468 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-10-14 23:53:00,834 INFO L341 Elim1Store]: treesize reduction 17, result has 66.7 percent of original size [2019-10-14 23:53:00,834 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2019-10-14 23:53:00,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:00,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:00,840 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:53:00,869 INFO L567 ElimStorePlain]: treesize reduction 50, result has 23.1 percent of original size [2019-10-14 23:53:00,870 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:53:00,871 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:7 [2019-10-14 23:53:00,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:00,943 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:53:01,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:53:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:53:01,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1625196637] [2019-10-14 23:53:01,159 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 25 [2019-10-14 23:53:01,202 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:53:01,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:53:01,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:53:01,273 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 25 variables. [2019-10-14 23:53:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:53:01,277 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:53:01,319 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-14 23:53:01,319 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:53:01,332 INFO L553 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2019-10-14 23:53:01,333 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:53:01,334 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:53:01,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 13, 10] total 29 [2019-10-14 23:53:01,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492795885] [2019-10-14 23:53:01,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:53:01,336 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:53:01,336 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:53:01,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:53:01,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:53:01,338 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-10-14 23:53:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:53:01,342 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-10-14 23:53:01,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:53:01,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-14 23:53:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:53:01,343 INFO L225 Difference]: With dead ends: 27 [2019-10-14 23:53:01,343 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:53:01,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 23:53:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:53:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:53:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:53:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:53:01,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-10-14 23:53:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:53:01,345 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:53:01,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:53:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:53:01,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:53:01,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:53:01,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:53:01,643 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,643 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:53:01,644 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,644 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,644 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647) (= ~MAX~0 100000)) [2019-10-14 23:53:01,644 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:53:01,644 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:53:01,645 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:53:01,645 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-14 23:53:01,645 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2019-10-14 23:53:01,645 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2019-10-14 23:53:01,645 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 28) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:53:01,646 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-10-14 23:53:01,646 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648)))) [2019-10-14 23:53:01,646 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 29) no Hoare annotation was computed. [2019-10-14 23:53:01,646 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 23) no Hoare annotation was computed. [2019-10-14 23:53:01,646 INFO L443 ceAbstractionStarter]: For program point L15-1(lines 15 29) no Hoare annotation was computed. [2019-10-14 23:53:01,646 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2019-10-14 23:53:01,647 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| 2147483647)) (not (= 100000 ~MAX~0)) (not (<= 0 (+ |old(~SIZE~0)| 2147483648))) (and (<= 0 (+ ~SIZE~0 2147483648)) (<= ~SIZE~0 2147483647))) [2019-10-14 23:53:01,647 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,647 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-14 23:53:01,647 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,647 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,648 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,648 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-14 23:53:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:53:01 BoogieIcfgContainer [2019-10-14 23:53:01,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:53:01,669 INFO L168 Benchmark]: Toolchain (without parser) took 3513.19 ms. Allocated memory was 136.8 MB in the beginning and 230.2 MB in the end (delta: 93.3 MB). Free memory was 100.9 MB in the beginning and 76.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,671 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.56 ms. Allocated memory is still 136.8 MB. Free memory was 100.7 MB in the beginning and 90.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,694 INFO L168 Benchmark]: Boogie Preprocessor took 127.68 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.7 MB in the beginning and 178.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,695 INFO L168 Benchmark]: RCFGBuilder took 324.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 163.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,696 INFO L168 Benchmark]: TraceAbstraction took 2753.74 ms. Allocated memory was 200.3 MB in the beginning and 230.2 MB in the end (delta: 29.9 MB). Free memory was 163.9 MB in the beginning and 76.5 MB in the end (delta: 87.4 MB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:53:01,707 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.56 ms. Allocated memory is still 136.8 MB. Free memory was 100.7 MB in the beginning and 90.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.68 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.7 MB in the beginning and 178.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.5 MB in the beginning and 163.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2753.74 ms. Allocated memory was 200.3 MB in the beginning and 230.2 MB in the end (delta: 29.9 MB). Free memory was 163.9 MB in the beginning and 76.5 MB in the end (delta: 87.4 MB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!(\old(SIZE) <= 2147483647) || !(100000 == MAX)) || !(0 <= \old(SIZE) + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 24 SDslu, 67 SDs, 0 SdLazy, 58 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 110 ConstructedInterpolants, 11 QuantifiedInterpolants, 18111 SizeOfPredicates, 13 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 122, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9619565217391305, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9130434782608695, AVG_WEAKENED_CONJUNCTS: 0.9565217391304348, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...