./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/recursive/recHanoi03-2.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f30ad67ccdaa679199b144fc55a3359f87c5bd3e ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:45:47,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:45:47,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:45:47,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:45:47,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:45:47,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:45:47,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:45:47,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:45:47,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:45:47,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:45:47,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:45:47,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:45:47,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:45:47,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:45:47,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:45:47,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:45:47,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:45:47,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:45:47,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:45:47,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:45:47,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:45:47,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:45:47,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:45:47,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:45:47,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:45:47,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:45:47,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:45:47,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:45:47,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:45:47,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:45:47,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:45:47,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:45:47,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:45:47,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:45:47,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:45:47,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:45:47,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:45:47,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:45:47,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:45:47,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:45:47,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:45:47,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:45:48,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:45:48,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:45:48,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:45:48,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:45:48,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:45:48,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:45:48,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:45:48,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:45:48,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:45:48,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:45:48,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:45:48,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:45:48,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:45:48,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:45:48,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:45:48,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:45:48,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:45:48,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:45:48,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:45:48,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:45:48,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:45:48,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:45:48,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:45:48,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:45:48,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:45:48,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:45:48,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:45:48,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:45:48,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:45:48,028 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(reach_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 -> f30ad67ccdaa679199b144fc55a3359f87c5bd3e [2020-10-20 01:45:48,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:45:48,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:45:48,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:45:48,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:45:48,342 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:45:48,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi03-2.c [2020-10-20 01:45:48,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b08e3b1/6fcec902081b41c09ce8340536e8c775/FLAG33df1247e [2020-10-20 01:45:48,987 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:45:48,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi03-2.c [2020-10-20 01:45:48,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b08e3b1/6fcec902081b41c09ce8340536e8c775/FLAG33df1247e [2020-10-20 01:45:49,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58b08e3b1/6fcec902081b41c09ce8340536e8c775 [2020-10-20 01:45:49,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:45:49,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:45:49,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:45:49,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:45:49,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:45:49,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb84052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49, skipping insertion in model container [2020-10-20 01:45:49,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:45:49,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:45:49,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:45:49,559 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:45:49,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:45:49,590 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:45:49,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49 WrapperNode [2020-10-20 01:45:49,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:45:49,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:45:49,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:45:49,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:45:49,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:45:49,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:45:49,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:45:49,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:45:49,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (1/1) ... [2020-10-20 01:45:49,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:45:49,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:45:49,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:45:49,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:45:49,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (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 [2020-10-20 01:45:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-20 01:45:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-20 01:45:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:45:49,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:45:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:45:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:45:49,930 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:45:49,931 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 01:45:49,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:45:49 BoogieIcfgContainer [2020-10-20 01:45:49,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:45:49,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:45:49,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:45:49,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:45:49,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:45:49" (1/3) ... [2020-10-20 01:45:49,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59aac31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:45:49, skipping insertion in model container [2020-10-20 01:45:49,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:49" (2/3) ... [2020-10-20 01:45:49,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59aac31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:45:49, skipping insertion in model container [2020-10-20 01:45:49,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:45:49" (3/3) ... [2020-10-20 01:45:49,941 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-10-20 01:45:49,954 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:45:49,962 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:45:49,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:45:50,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:45:50,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:45:50,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:45:50,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:45:50,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:45:50,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:45:50,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:45:50,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:45:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-20 01:45:50,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 01:45:50,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:45:50,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:45:50,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:45:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:45:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1397741056, now seen corresponding path program 1 times [2020-10-20 01:45:50,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:45:50,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813342109] [2020-10-20 01:45:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:45:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:45:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:45:50,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813342109] [2020-10-20 01:45:50,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:45:50,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:45:50,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214214883] [2020-10-20 01:45:50,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:45:50,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:45:50,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:45:50,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:45:50,363 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-10-20 01:45:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:45:50,518 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-20 01:45:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:45:50,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 01:45:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:45:50,531 INFO L225 Difference]: With dead ends: 30 [2020-10-20 01:45:50,532 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 01:45:50,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:45:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 01:45:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 01:45:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 01:45:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-20 01:45:50,584 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2020-10-20 01:45:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:45:50,584 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-20 01:45:50,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:45:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-20 01:45:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:45:50,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:45:50,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:45:50,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:45:50,588 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:45:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:45:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash -588624460, now seen corresponding path program 1 times [2020-10-20 01:45:50,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:45:50,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509859595] [2020-10-20 01:45:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:45:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:45:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 01:45:50,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509859595] [2020-10-20 01:45:50,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999062572] [2020-10-20 01:45:50,746 INFO L95 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 [2020-10-20 01:45:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:50,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 01:45:50,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:45:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 01:45:51,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:45:51,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-10-20 01:45:51,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672622900] [2020-10-20 01:45:51,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 01:45:51,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:45:51,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 01:45:51,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:45:51,144 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 14 states. [2020-10-20 01:45:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:45:51,287 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-10-20 01:45:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:45:51,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-20 01:45:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:45:51,289 INFO L225 Difference]: With dead ends: 23 [2020-10-20 01:45:51,289 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 01:45:51,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-20 01:45:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 01:45:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 01:45:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 01:45:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-20 01:45:51,297 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2020-10-20 01:45:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:45:51,298 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-20 01:45:51,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 01:45:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-20 01:45:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:45:51,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:45:51,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:45:51,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:45:51,513 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:45:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:45:51,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1786431680, now seen corresponding path program 2 times [2020-10-20 01:45:51,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:45:51,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422567268] [2020-10-20 01:45:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:45:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:45:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 01:45:51,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422567268] [2020-10-20 01:45:51,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088138067] [2020-10-20 01:45:51,768 INFO L93 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 [2020-10-20 01:45:51,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:45:51,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:45:51,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 01:45:51,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:45:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 01:45:52,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:45:52,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-10-20 01:45:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266844332] [2020-10-20 01:45:52,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 01:45:52,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:45:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 01:45:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-20 01:45:52,197 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 18 states. [2020-10-20 01:45:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:45:52,437 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-10-20 01:45:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 01:45:52,437 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2020-10-20 01:45:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:45:52,439 INFO L225 Difference]: With dead ends: 31 [2020-10-20 01:45:52,439 INFO L226 Difference]: Without dead ends: 25 [2020-10-20 01:45:52,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-20 01:45:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-20 01:45:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-20 01:45:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 01:45:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-20 01:45:52,446 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2020-10-20 01:45:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:45:52,446 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-20 01:45:52,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 01:45:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-20 01:45:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 01:45:52,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:45:52,448 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:45:52,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:45:52,663 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:45:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:45:52,664 INFO L82 PathProgramCache]: Analyzing trace with hash -669566080, now seen corresponding path program 3 times [2020-10-20 01:45:52,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:45:52,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241730569] [2020-10-20 01:45:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:45:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:52,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-20 01:45:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:52,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:45:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:45:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-20 01:45:53,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241730569] [2020-10-20 01:45:53,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868583609] [2020-10-20 01:45:53,045 INFO L93 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 [2020-10-20 01:45:53,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-20 01:45:53,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:45:53,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 01:45:53,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:45:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-20 01:45:53,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:45:53,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2020-10-20 01:45:53,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753828783] [2020-10-20 01:45:53,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 01:45:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:45:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 01:45:53,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-20 01:45:53,871 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 14 states. [2020-10-20 01:45:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:45:53,947 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-20 01:45:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 01:45:53,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-20 01:45:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:45:53,949 INFO L225 Difference]: With dead ends: 25 [2020-10-20 01:45:53,949 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:45:53,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-20 01:45:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:45:53,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:45:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:45:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:45:53,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-20 01:45:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:45:53,952 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:45:53,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 01:45:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:45:53,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:45:54,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:45:54,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:45:54,184 INFO L274 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-10-20 01:45:54,184 INFO L277 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-10-20 01:45:54,184 INFO L274 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-10-20 01:45:54,184 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:45:54,185 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 31) [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-10-20 01:45:54,185 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:45:54,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:45:54,186 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-20 01:45:54,186 INFO L277 CegarLoopResult]: At program point L26(lines 26 37) the Hoare annotation is: true [2020-10-20 01:45:54,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 01:45:54,186 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-20 01:45:54,186 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 01:45:54,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:45:54 BoogieIcfgContainer [2020-10-20 01:45:54,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:45:54,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:45:54,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:45:54,207 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:45:54,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:45:49" (3/4) ... [2020-10-20 01:45:54,213 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:45:54,220 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2020-10-20 01:45:54,224 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 01:45:54,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:45:54,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:45:54,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:45:54,269 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:45:54,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:45:54,272 INFO L168 Benchmark]: Toolchain (without parser) took 4952.30 ms. Allocated memory was 43.0 MB in the beginning and 59.8 MB in the end (delta: 16.8 MB). Free memory was 21.9 MB in the beginning and 12.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,273 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 32.5 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.68 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.0 MB in the beginning and 22.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.70 ms. Allocated memory is still 43.5 MB. Free memory was 22.2 MB in the beginning and 20.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,275 INFO L168 Benchmark]: Boogie Preprocessor took 17.11 ms. Allocated memory is still 43.5 MB. Free memory was 20.6 MB in the beginning and 19.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,276 INFO L168 Benchmark]: RCFGBuilder took 292.00 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 19.5 MB in the beginning and 24.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,276 INFO L168 Benchmark]: TraceAbstraction took 4270.86 ms. Allocated memory was 45.1 MB in the beginning and 59.8 MB in the end (delta: 14.7 MB). Free memory was 23.6 MB in the beginning and 15.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,277 INFO L168 Benchmark]: Witness Printer took 64.50 ms. Allocated memory is still 59.8 MB. Free memory was 15.3 MB in the beginning and 12.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:54,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 32.5 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 264.68 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 21.0 MB in the beginning and 22.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 31.70 ms. Allocated memory is still 43.5 MB. Free memory was 22.2 MB in the beginning and 20.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.11 ms. Allocated memory is still 43.5 MB. Free memory was 20.6 MB in the beginning and 19.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 292.00 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 19.5 MB in the beginning and 24.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4270.86 ms. Allocated memory was 45.1 MB in the beginning and 59.8 MB in the end (delta: 14.7 MB). Free memory was 23.6 MB in the beginning and 15.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.3 GB. * Witness Printer took 64.50 ms. Allocated memory is still 59.8 MB. Free memory was 15.3 MB in the beginning and 12.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 20 SDslu, 282 SDs, 0 SdLazy, 309 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 154 ConstructedInterpolants, 14 QuantifiedInterpolants, 24552 SizeOfPredicates, 11 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 96/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...