./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test24-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 043660dc5a969bbd34b12cbb93ba3e467b4f8613 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:53:23,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:23,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:23,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:23,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:23,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:23,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:23,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:23,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:23,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:23,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:23,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:23,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:23,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:23,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:23,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:23,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:23,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:23,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:23,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:23,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:23,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:23,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:23,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:23,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:23,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:23,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:23,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:23,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:23,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:23,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:23,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:23,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:23,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:23,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:23,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:23,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:23,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:23,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:23,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:23,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:23,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:23,895 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:23,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:23,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:23,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:23,898 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:23,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:23,899 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:23,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:23,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:23,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:23,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:23,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:23,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:23,903 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:23,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:23,903 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:23,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:23,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:23,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:23,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:23,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:23,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:23,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:23,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:23,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:23,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:23,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:23,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:23,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 043660dc5a969bbd34b12cbb93ba3e467b4f8613 [2019-11-27 23:53:24,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:24,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:24,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:24,272 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:24,272 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:24,274 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test24-1.c [2019-11-27 23:53:24,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de83ca1cd/2dddcd181b424558a2d36e6ed7a4d54a/FLAG4c1ce2c4a [2019-11-27 23:53:24,847 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:24,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c [2019-11-27 23:53:24,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de83ca1cd/2dddcd181b424558a2d36e6ed7a4d54a/FLAG4c1ce2c4a [2019-11-27 23:53:25,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de83ca1cd/2dddcd181b424558a2d36e6ed7a4d54a [2019-11-27 23:53:25,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:25,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:25,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:25,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:25,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:25,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa251a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25, skipping insertion in model container [2019-11-27 23:53:25,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:25,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:25,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:25,562 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:25,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:25,591 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:25,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25 WrapperNode [2019-11-27 23:53:25,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:25,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:25,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:25,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:25,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:25,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:25,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:25,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:25,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (1/1) ... [2019-11-27 23:53:25,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:25,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:25,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:25,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:25,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (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 [2019-11-27 23:53:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:25,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:53:26,041 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:26,041 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:53:26,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:26 BoogieIcfgContainer [2019-11-27 23:53:26,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:26,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:26,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:26,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:26,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:25" (1/3) ... [2019-11-27 23:53:26,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e5d01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:26, skipping insertion in model container [2019-11-27 23:53:26,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:25" (2/3) ... [2019-11-27 23:53:26,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e5d01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:26, skipping insertion in model container [2019-11-27 23:53:26,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:26" (3/3) ... [2019-11-27 23:53:26,067 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2019-11-27 23:53:26,092 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:26,099 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:26,111 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:26,130 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:26,130 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:26,130 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:26,131 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:26,131 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:26,131 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:26,131 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:26,131 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-27 23:53:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:53:26,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:26,150 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:26,151 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:26,156 INFO L82 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2019-11-27 23:53:26,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:26,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917964204] [2019-11-27 23:53:26,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:26,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917964204] [2019-11-27 23:53:26,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:26,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:53:26,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896678081] [2019-11-27 23:53:26,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:53:26,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:53:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:53:26,307 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-27 23:53:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:26,321 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-27 23:53:26,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:53:26,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-27 23:53:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:26,331 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:53:26,331 INFO L226 Difference]: Without dead ends: 10 [2019-11-27 23:53:26,334 INFO L630 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 [2019-11-27 23:53:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-27 23:53:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-27 23:53:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-27 23:53:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-27 23:53:26,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-11-27 23:53:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:26,369 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-27 23:53:26,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:53:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-27 23:53:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:53:26,371 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:26,371 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:26,372 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2019-11-27 23:53:26,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:26,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230618827] [2019-11-27 23:53:26,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:26,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230618827] [2019-11-27 23:53:26,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:26,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:53:26,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063597722] [2019-11-27 23:53:26,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:53:26,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:53:26,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:53:26,540 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2019-11-27 23:53:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:26,590 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-27 23:53:26,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:53:26,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-27 23:53:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:26,591 INFO L225 Difference]: With dead ends: 17 [2019-11-27 23:53:26,592 INFO L226 Difference]: Without dead ends: 12 [2019-11-27 23:53:26,593 INFO L630 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 [2019-11-27 23:53:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-27 23:53:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-27 23:53:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-27 23:53:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-27 23:53:26,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-11-27 23:53:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:26,598 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-27 23:53:26,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:53:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-27 23:53:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:53:26,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:26,599 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:26,600 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:26,600 INFO L82 PathProgramCache]: Analyzing trace with hash 263489748, now seen corresponding path program 1 times [2019-11-27 23:53:26,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:26,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164654021] [2019-11-27 23:53:26,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:26,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164654021] [2019-11-27 23:53:26,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484859772] [2019-11-27 23:53:26,739 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 [2019-11-27 23:53:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:26,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-27 23:53:26,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:33,819 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-27 23:53:33,826 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:33,827 INFO L377 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 27 treesize of output 12 [2019-11-27 23:53:33,828 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:33,844 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:33,851 INFO L508 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:33,852 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:5 [2019-11-27 23:53:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:33,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:53:33,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-11-27 23:53:33,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054382156] [2019-11-27 23:53:33,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-27 23:53:33,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:33,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-27 23:53:33,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=44, Unknown=4, NotChecked=0, Total=72 [2019-11-27 23:53:33,868 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2019-11-27 23:53:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:36,612 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-27 23:53:36,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-27 23:53:36,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-27 23:53:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:36,614 INFO L225 Difference]: With dead ends: 21 [2019-11-27 23:53:36,614 INFO L226 Difference]: Without dead ends: 16 [2019-11-27 23:53:36,615 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=55, Invalid=97, Unknown=4, NotChecked=0, Total=156 [2019-11-27 23:53:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-27 23:53:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-27 23:53:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 23:53:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-27 23:53:36,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2019-11-27 23:53:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:36,619 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-27 23:53:36,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-27 23:53:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-27 23:53:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:53:36,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:36,620 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:36,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:36,826 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:36,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash -919715042, now seen corresponding path program 2 times [2019-11-27 23:53:36,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:36,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368983629] [2019-11-27 23:53:36,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:36,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368983629] [2019-11-27 23:53:36,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59452986] [2019-11-27 23:53:36,982 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:37,031 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 23:53:37,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:53:37,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-27 23:53:37,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:37,061 INFO L377 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 27 treesize of output 23 [2019-11-27 23:53:37,061 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:37,075 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:37,077 INFO L508 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. [2019-11-27 23:53:37,077 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:55 [2019-11-27 23:53:37,264 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-27 23:53:37,268 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:37,268 INFO L377 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 50 treesize of output 21 [2019-11-27 23:53:37,270 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:37,282 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:37,283 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:37,283 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:30 [2019-11-27 23:53:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:40,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:53:40,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-27 23:53:40,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001407724] [2019-11-27 23:53:40,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-27 23:53:40,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-27 23:53:40,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=104, Unknown=2, NotChecked=0, Total=156 [2019-11-27 23:53:40,658 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2019-11-27 23:53:42,728 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2019-11-27 23:53:46,806 WARN L192 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2019-11-27 23:53:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:46,963 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-27 23:53:46,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-27 23:53:46,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2019-11-27 23:53:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:46,964 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:53:46,965 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 23:53:46,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=104, Invalid=200, Unknown=2, NotChecked=0, Total=306 [2019-11-27 23:53:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 23:53:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-27 23:53:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 23:53:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-27 23:53:46,971 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2019-11-27 23:53:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:46,972 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-27 23:53:46,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-27 23:53:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-27 23:53:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-27 23:53:46,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:46,973 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:47,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:47,177 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1868061597, now seen corresponding path program 3 times [2019-11-27 23:53:47,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:47,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150586155] [2019-11-27 23:53:47,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:47,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150586155] [2019-11-27 23:53:47,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296256300] [2019-11-27 23:53:47,334 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:47,386 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-27 23:53:47,386 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:53:47,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-27 23:53:47,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:47,398 INFO L377 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 [2019-11-27 23:53:47,398 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:47,410 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:47,411 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:47,411 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-11-27 23:53:47,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-27 23:53:47,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:53:47,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-27 23:53:47,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54211915] [2019-11-27 23:53:47,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-27 23:53:47,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:47,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-27 23:53:47,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:53:47,710 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 16 states. [2019-11-27 23:53:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:48,831 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-27 23:53:48,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-27 23:53:48,832 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2019-11-27 23:53:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:48,832 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:53:48,833 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:53:48,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2019-11-27 23:53:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:53:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:53:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:53:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:53:48,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-27 23:53:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:48,836 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:53:48,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-27 23:53:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:53:48,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:53:49,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:53:49,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:53:49,178 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:53:49,178 INFO L246 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-11-27 23:53:49,179 INFO L246 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2019-11-27 23:53:49,179 INFO L246 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2019-11-27 23:53:49,180 INFO L242 CegarLoopResult]: At program point L11(lines 9 12) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (- |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) 8))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))))) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (= 1 |ULTIMATE.start_check_#res|) (exists ((ULTIMATE.start_main_~pa~0.offset Int)) (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (let ((.cse1 (select .cse3 ULTIMATE.start_main_~pa~0.offset))) (and (<= .cse1 ULTIMATE.start_main_~i~0) (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse2 (div (+ (- |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) 8))) (= .cse2 (select .cse3 (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse2 8))))) (<= ULTIMATE.start_main_~i~0 .cse1)))))) [2019-11-27 23:53:49,180 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:53:49,180 INFO L242 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2019-11-27 23:53:49,180 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:53:49,180 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:53:49,180 INFO L246 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2019-11-27 23:53:49,180 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2019-11-27 23:53:49,181 INFO L242 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) ULTIMATE.start_main_~pa~0.offset) 8))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))) .cse0)) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|)) [2019-11-27 23:53:49,181 INFO L246 CegarLoopResult]: For program point L26-4(lines 26 28) no Hoare annotation was computed. [2019-11-27 23:53:49,181 INFO L249 CegarLoopResult]: At program point L37(lines 14 38) the Hoare annotation is: true [2019-11-27 23:53:49,191 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,193 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,202 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,203 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,205 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,206 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,207 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:49 BoogieIcfgContainer [2019-11-27 23:53:49,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:49,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:49,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:49,210 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:49,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:26" (3/4) ... [2019-11-27 23:53:49,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:53:49,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-27 23:53:49,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-27 23:53:49,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:53:49,259 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((ad1 * 7 + pa) % 8 == 0 && (-ad1 + pa) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + pa) / 8 * 8]) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && 1 == \result) && (\exists ULTIMATE.start_main_~pa~0.offset : int :: ((unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset] <= i && (ad1 * 7 + ULTIMATE.start_main_~pa~0.offset) % 8 == 0) && (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 * 8]) && i <= unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset]) [2019-11-27 23:53:49,282 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:49,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:49,284 INFO L168 Benchmark]: Toolchain (without parser) took 24017.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 956.3 MB in the beginning and 811.5 MB in the end (delta: 144.8 MB). Peak memory consumption was 275.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,285 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:49,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.65 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,287 INFO L168 Benchmark]: Boogie Preprocessor took 32.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,288 INFO L168 Benchmark]: RCFGBuilder took 313.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,288 INFO L168 Benchmark]: TraceAbstraction took 23165.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 814.6 MB in the end (delta: 287.2 MB). Peak memory consumption was 287.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,289 INFO L168 Benchmark]: Witness Printer took 72.78 ms. Allocated memory is still 1.2 GB. Free memory was 814.6 MB in the beginning and 811.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:49,293 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 323.65 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 103.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 313.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23165.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 814.6 MB in the end (delta: 287.2 MB). Peak memory consumption was 287.2 MB. Max. memory is 11.5 GB. * Witness Printer took 72.78 ms. Allocated memory is still 1.2 GB. Free memory was 814.6 MB in the beginning and 811.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] * 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 - 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 - 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 - 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant [2019-11-27 23:53:49,307 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,307 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,308 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,308 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,308 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,334 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,335 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-11-27 23:53:49,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((ad1 * 7 + pa) % 8 == 0 && (-ad1 + pa) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + pa) / 8 * 8]) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && 1 == \result) && (\exists ULTIMATE.start_main_~pa~0.offset : int :: ((unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset] <= i && (ad1 * 7 + ULTIMATE.start_main_~pa~0.offset) % 8 == 0) && (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-ad1 + ULTIMATE.start_main_~pa~0.offset) / 8 * 8]) && i <= unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset]) - InvariantResult [Line: 26]: Loop Invariant [2019-11-27 23:53:49,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,347 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,347 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-27 23:53:49,348 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 * 7 + pa) % 8 == 0 && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 22.9s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 42 SDtfs, 30 SDslu, 64 SDs, 0 SdLazy, 144 SolverSat, 8 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 135 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 475 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 95 ConstructedInterpolants, 13 QuantifiedInterpolants, 17107 SizeOfPredicates, 30 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...