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 -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:01:06,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:01:06,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:01:06,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:01:06,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:01:06,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:01:06,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:01:06,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:01:06,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:01:06,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:01:06,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:01:06,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:01:06,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:01:06,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:01:06,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:01:06,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:01:06,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:01:06,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:01:06,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:01:06,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:01:06,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:01:06,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:01:06,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:01:06,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:01:06,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:01:06,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:01:06,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:01:06,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:01:06,809 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 [2019-09-20 13:01:06,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:01:06,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:01:06,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:01:06,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:01:06,833 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:01:06,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:01:06,834 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:01:06,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:01:06,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:01:06,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:01:06,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:01:06,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:01:06,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:01:06,836 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:01:06,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:01:06,837 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:01:06,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:01:06,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:01:06,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:01:06,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:01:06,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:01:06,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:01:06,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:01:06,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:01:06,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:01:06,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:01:06,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:01:06,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:01:06,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:01:06,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:01:06,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:01:06,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:01:06,898 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:01:06,898 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:01:06,899 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2019-09-20 13:01:06,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cca8dc3/9faf489ac08746d8961842db000dc0dd/FLAG6209b14b6 [2019-09-20 13:01:07,409 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:01:07,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2019-09-20 13:01:07,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cca8dc3/9faf489ac08746d8961842db000dc0dd/FLAG6209b14b6 [2019-09-20 13:01:07,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3cca8dc3/9faf489ac08746d8961842db000dc0dd [2019-09-20 13:01:07,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:01:07,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:01:07,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:07,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:01:07,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:01:07,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:07" (1/1) ... [2019-09-20 13:01:07,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24178ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:07, skipping insertion in model container [2019-09-20 13:01:07,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:07" (1/1) ... [2019-09-20 13:01:07,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:01:07,859 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:01:08,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:08,040 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:01:08,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:08,164 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:01:08,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08 WrapperNode [2019-09-20 13:01:08,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:08,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:01:08,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:01:08,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:01:08,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (1/1) ... [2019-09-20 13:01:08,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:01:08,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:01:08,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:01:08,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:01:08,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (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 [2019-09-20 13:01:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:01:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:01:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-20 13:01:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:01:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:01:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:01:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:01:08,488 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:01:08,489 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:01:08,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:08 BoogieIcfgContainer [2019-09-20 13:01:08,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:01:08,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:01:08,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:01:08,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:01:08,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:01:07" (1/3) ... [2019-09-20 13:01:08,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b558d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:08, skipping insertion in model container [2019-09-20 13:01:08,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:08" (2/3) ... [2019-09-20 13:01:08,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b558d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:08, skipping insertion in model container [2019-09-20 13:01:08,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:08" (3/3) ... [2019-09-20 13:01:08,498 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2019-09-20 13:01:08,509 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:01:08,517 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:01:08,545 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:01:08,609 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:01:08,610 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:01:08,610 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:01:08,610 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:01:08,611 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:01:08,611 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:01:08,611 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:01:08,611 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:01:08,611 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:01:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-20 13:01:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:01:08,642 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:08,643 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:08,645 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2019-09-20 13:01:08,659 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:08,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:08,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:08,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:08,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:08,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:08,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:01:08,815 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:01:08,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:01:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:01:08,829 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-20 13:01:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:08,847 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-09-20 13:01:08,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:01:08,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-20 13:01:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:08,858 INFO L225 Difference]: With dead ends: 35 [2019-09-20 13:01:08,859 INFO L226 Difference]: Without dead ends: 17 [2019-09-20 13:01:08,862 INFO L636 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 [2019-09-20 13:01:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-20 13:01:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-20 13:01:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-20 13:01:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-09-20 13:01:08,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2019-09-20 13:01:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:08,903 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-09-20 13:01:08,903 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:01:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-09-20 13:01:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:01:08,904 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:08,904 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:08,904 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2019-09-20 13:01:08,905 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:08,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:08,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:08,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:08,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:09,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:09,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:01:09,061 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:01:09,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:01:09,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:01:09,063 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2019-09-20 13:01:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:09,146 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-09-20 13:01:09,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:01:09,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-20 13:01:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:09,148 INFO L225 Difference]: With dead ends: 27 [2019-09-20 13:01:09,148 INFO L226 Difference]: Without dead ends: 19 [2019-09-20 13:01:09,149 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:01:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-20 13:01:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-20 13:01:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-20 13:01:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-09-20 13:01:09,155 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2019-09-20 13:01:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:09,156 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-09-20 13:01:09,156 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:01:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-09-20 13:01:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:01:09,157 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:09,157 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:09,158 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:09,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2019-09-20 13:01:09,158 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:09,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:09,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:09,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:09,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:09,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:09,301 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 13:01:09,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:01:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:09,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-20 13:01:09,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:09,441 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2019-09-20 13:01:09,442 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:09,459 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:09,460 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:01:09,460 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2019-09-20 13:01:09,535 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:01:09,540 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:09,540 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 20 [2019-09-20 13:01:09,542 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:09,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:09,555 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:01:09,555 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:28 [2019-09-20 13:01:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:09,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:09,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-20 13:01:09,587 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:01:09,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:01:09,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:01:09,588 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 9 states. [2019-09-20 13:01:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:11,802 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-09-20 13:01:11,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:01:11,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-09-20 13:01:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:11,804 INFO L225 Difference]: With dead ends: 33 [2019-09-20 13:01:11,805 INFO L226 Difference]: Without dead ends: 25 [2019-09-20 13:01:11,806 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=49, Invalid=82, Unknown=1, NotChecked=0, Total=132 [2019-09-20 13:01:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-20 13:01:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-20 13:01:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-20 13:01:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-09-20 13:01:11,821 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-09-20 13:01:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:11,822 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-09-20 13:01:11,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:01:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-09-20 13:01:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:01:11,826 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:11,826 INFO L407 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:11,826 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 2 times [2019-09-20 13:01:11,827 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:11,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:11,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:11,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:12,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:12,046 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:01:12,081 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:01:12,109 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 13:01:12,110 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:12,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:01:12,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:15,077 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:01:15,084 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:15,084 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 12 [2019-09-20 13:01:15,085 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:15,091 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:15,092 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:15,092 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:5 [2019-09-20 13:01:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:15,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:15,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-09-20 13:01:15,118 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:01:15,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:01:15,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:01:15,119 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 14 states. [2019-09-20 13:01:20,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:20,884 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-09-20 13:01:20,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:01:20,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2019-09-20 13:01:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:20,886 INFO L225 Difference]: With dead ends: 45 [2019-09-20 13:01:20,886 INFO L226 Difference]: Without dead ends: 37 [2019-09-20 13:01:20,887 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=205, Invalid=346, Unknown=1, NotChecked=0, Total=552 [2019-09-20 13:01:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-20 13:01:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-20 13:01:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-20 13:01:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-09-20 13:01:20,901 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 24 [2019-09-20 13:01:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:20,901 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-09-20 13:01:20,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:01:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-09-20 13:01:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:01:20,904 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:20,904 INFO L407 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:20,904 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:20,905 INFO L82 PathProgramCache]: Analyzing trace with hash 480004671, now seen corresponding path program 3 times [2019-09-20 13:01:20,905 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:20,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:20,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:20,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:01:20,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-20 13:01:21,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:21,255 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:01:21,276 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:01:21,299 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-20 13:01:21,300 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:21,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-20 13:01:21,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:21,314 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2019-09-20 13:01:21,314 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:21,323 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:21,323 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:21,324 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-09-20 13:01:23,528 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#ad1~0.base_BEFORE_CALL_1| Int) (|v_main_~#ad1~0.offset_BEFORE_CALL_1| Int) (main_~pa~0.offset Int)) (and (= (mod (+ (* 7 |v_main_~#ad1~0.offset_BEFORE_CALL_1|) main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (* (- 1) |v_main_~#ad1~0.offset_BEFORE_CALL_1|) main_~pa~0.offset) 8))) (= (select (select |c_#memory_int| |v_main_~#ad1~0.base_BEFORE_CALL_1|) (+ (* 8 .cse0) |v_main_~#ad1~0.offset_BEFORE_CALL_1|)) .cse0)))) is different from true [2019-09-20 13:01:29,791 WARN L191 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2019-09-20 13:01:29,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:01:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-20 13:01:29,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:29,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-09-20 13:01:29,840 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-20 13:01:29,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-20 13:01:29,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=232, Unknown=1, NotChecked=30, Total=306 [2019-09-20 13:01:29,841 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 18 states. [2019-09-20 13:01:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:30,257 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-09-20 13:01:30,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:01:30,259 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2019-09-20 13:01:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:30,260 INFO L225 Difference]: With dead ends: 37 [2019-09-20 13:01:30,260 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:01:30,261 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=85, Invalid=338, Unknown=1, NotChecked=38, Total=462 [2019-09-20 13:01:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:01:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:01:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:01:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:01:30,262 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-09-20 13:01:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:30,262 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:01:30,262 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-20 13:01:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:01:30,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:01:30,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:01:36,373 WARN L191 SmtUtils]: Spent 6.03 s on a formula simplification. DAG size of input: 27 DAG size of output: 1 [2019-09-20 13:01:36,376 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-20 13:01:36,376 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-20 13:01:36,376 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 13:01:36,376 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 13:01:36,376 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 13:01:36,376 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 13:01:36,376 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 32) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2019-09-20 13:01:36,377 INFO L439 ceAbstractionStarter]: At program point L30(lines 15 38) the Hoare annotation is: false [2019-09-20 13:01:36,377 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 38) the Hoare annotation is: true [2019-09-20 13:01:36,377 INFO L443 ceAbstractionStarter]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2019-09-20 13:01:36,378 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (= 0 (mod (+ main_~pa~0.offset (* 7 |main_~#ad1~0.offset|)) 8)) (= |main_~#ad1~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.base |main_~#ad1~0.base|) (let ((.cse0 (div (+ main_~pa~0.offset (- |main_~#ad1~0.offset|)) 8))) (= .cse0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* 8 .cse0) |main_~#ad1~0.offset|))))) [2019-09-20 13:01:36,378 INFO L439 ceAbstractionStarter]: At program point L26-4(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|))) (and (= 0 (mod (+ main_~pa~0.offset (* 7 |main_~#ad1~0.offset|)) 8)) (= |main_~#ad1~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~i~0 (select .cse0 (+ (* 8 main_~i~0) |main_~#ad1~0.offset|))) (= main_~pa~0.base |main_~#ad1~0.base|) (let ((.cse1 (div (+ main_~pa~0.offset (- |main_~#ad1~0.offset|)) 8))) (= .cse1 (select .cse0 (+ (* 8 .cse1) |main_~#ad1~0.offset|)))))) [2019-09-20 13:01:36,378 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2019-09-20 13:01:36,378 INFO L446 ceAbstractionStarter]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2019-09-20 13:01:36,378 INFO L443 ceAbstractionStarter]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2019-09-20 13:01:36,379 INFO L443 ceAbstractionStarter]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2019-09-20 13:01:36,387 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,388 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,393 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,393 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:01:36 BoogieIcfgContainer [2019-09-20 13:01:36,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:01:36,398 INFO L168 Benchmark]: Toolchain (without parser) took 28569.20 ms. Allocated memory was 132.1 MB in the beginning and 262.7 MB in the end (delta: 130.5 MB). Free memory was 87.8 MB in the beginning and 165.0 MB in the end (delta: -77.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:36,399 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 132.1 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:01:36,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.05 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 87.6 MB in the beginning and 176.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:36,400 INFO L168 Benchmark]: Boogie Preprocessor took 33.11 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 174.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:36,401 INFO L168 Benchmark]: RCFGBuilder took 291.54 ms. Allocated memory is still 199.8 MB. Free memory was 174.8 MB in the beginning and 160.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:36,402 INFO L168 Benchmark]: TraceAbstraction took 27904.21 ms. Allocated memory was 199.8 MB in the beginning and 262.7 MB in the end (delta: 62.9 MB). Free memory was 159.8 MB in the beginning and 165.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:36,406 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 132.1 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.05 ms. Allocated memory was 132.1 MB in the beginning and 199.8 MB in the end (delta: 67.6 MB). Free memory was 87.6 MB in the beginning and 176.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.11 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 174.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.54 ms. Allocated memory is still 199.8 MB. Free memory was 174.8 MB in the beginning and 160.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27904.21 ms. Allocated memory was 199.8 MB in the beginning and 262.7 MB in the end (delta: 62.9 MB). Free memory was 159.8 MB in the beginning and 165.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 26]: Loop Invariant [2019-09-20 13:01:36,415 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,415 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,416 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:36,416 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((0 == (pa + 7 * ad1) % 8 && ad1 == 0) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && (pa + -ad1) / 8 == unknown-#memory_int-unknown[ad1][8 * ((pa + -ad1) / 8) + ad1] - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 27.7s OverallTime, 5 OverallIterations, 11 TraceHistogramMax, 8.5s AutomataDifference, 0.0s DeadEndRemovalTime, 6.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 33 SDslu, 174 SDs, 0 SdLazy, 134 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 23 NumberOfFragments, 105 HoareAnnotationTreeSize, 12 FomulaSimplifications, 758 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 70 FormulaSimplificationTreeSizeReductionInter, 6.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 187 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 179 ConstructedInterpolants, 18 QuantifiedInterpolants, 69952 SizeOfPredicates, 27 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 181/264 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...