./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array7_pattern.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/array-patterns/array7_pattern.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 222856e5aac50556115eb69aa7e0e0af3d4be5d4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:07:24,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:07:24,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:07:24,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:07:24,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:07:24,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:07:24,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:07:24,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:07:24,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:07:24,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:07:24,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:07:24,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:07:24,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:07:24,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:07:24,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:07:24,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:07:24,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:07:24,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:07:24,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:07:24,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:07:24,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:07:24,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:07:24,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:07:24,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:07:24,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:07:24,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:07:24,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:07:24,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:07:24,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:07:24,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:07:24,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:07:24,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:07:24,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:07:24,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:07:24,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:07:24,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:07:24,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:07:24,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:07:24,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:07:24,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:07:24,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:07:24,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:07:24,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:07:24,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:07:24,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:07:24,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:07:24,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:07:24,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:07:24,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:07:24,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:07:24,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:07:24,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:07:24,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:07:24,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:07:24,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:07:24,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:07:24,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:07:24,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:07:24,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:07:24,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:07:24,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:07:24,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:07:24,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:07:24,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:07:24,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:07:24,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:07:24,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:07:24,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:07:24,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:07:24,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:07:24,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:07:24,631 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 -> 222856e5aac50556115eb69aa7e0e0af3d4be5d4 [2020-10-19 22:07:24,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:07:24,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:07:24,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:07:24,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:07:24,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:07:24,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array7_pattern.c [2020-10-19 22:07:24,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea9791ac/9500a279825f4f3796423b7b46c76651/FLAG31b864e9a [2020-10-19 22:07:25,447 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:07:25,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2020-10-19 22:07:25,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea9791ac/9500a279825f4f3796423b7b46c76651/FLAG31b864e9a [2020-10-19 22:07:25,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea9791ac/9500a279825f4f3796423b7b46c76651 [2020-10-19 22:07:25,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:07:25,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:07:25,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:07:25,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:07:25,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:07:25,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:07:25" (1/1) ... [2020-10-19 22:07:25,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee7bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:25, skipping insertion in model container [2020-10-19 22:07:25,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:07:25" (1/1) ... [2020-10-19 22:07:25,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:07:25,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:07:26,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:07:26,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:07:26,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:07:26,139 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:07:26,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26 WrapperNode [2020-10-19 22:07:26,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:07:26,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:07:26,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:07:26,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:07:26,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:07:26,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:07:26,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:07:26,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:07:26,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (1/1) ... [2020-10-19 22:07:26,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:07:26,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:07:26,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:07:26,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:07:26,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (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 [2020-10-19 22:07:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:07:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:07:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:07:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:07:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:07:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:07:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 22:07:28,734 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:07:28,735 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-19 22:07:28,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:07:28 BoogieIcfgContainer [2020-10-19 22:07:28,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:07:28,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:07:28,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:07:28,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:07:28,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:07:25" (1/3) ... [2020-10-19 22:07:28,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7d9a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:07:28, skipping insertion in model container [2020-10-19 22:07:28,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:07:26" (2/3) ... [2020-10-19 22:07:28,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7d9a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:07:28, skipping insertion in model container [2020-10-19 22:07:28,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:07:28" (3/3) ... [2020-10-19 22:07:28,746 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2020-10-19 22:07:28,757 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:07:28,762 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:07:28,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:07:28,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:07:28,798 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:07:28,798 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:07:28,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:07:28,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:07:28,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:07:28,800 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:07:28,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:07:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-19 22:07:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 22:07:28,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:28,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:28,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 762886292, now seen corresponding path program 1 times [2020-10-19 22:07:28,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:28,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749431534] [2020-10-19 22:07:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:07:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:07:29,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749431534] [2020-10-19 22:07:29,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:07:29,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:07:29,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766205310] [2020-10-19 22:07:29,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:07:29,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:29,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:07:29,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:07:29,034 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-19 22:07:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:29,054 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2020-10-19 22:07:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:07:29,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-19 22:07:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:29,066 INFO L225 Difference]: With dead ends: 44 [2020-10-19 22:07:29,067 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 22:07:29,070 INFO L677 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 [2020-10-19 22:07:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 22:07:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-19 22:07:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 22:07:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-19 22:07:29,107 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-10-19 22:07:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:29,108 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-19 22:07:29,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:07:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-19 22:07:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:07:29,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:29,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:29,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:07:29,111 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:29,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1007772984, now seen corresponding path program 1 times [2020-10-19 22:07:29,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:29,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791377470] [2020-10-19 22:07:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:07:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:07:29,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791377470] [2020-10-19 22:07:29,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:07:29,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:07:29,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551288598] [2020-10-19 22:07:29,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:07:29,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:29,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:07:29,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:07:29,279 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2020-10-19 22:07:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:29,321 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-19 22:07:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:07:29,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-19 22:07:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:29,323 INFO L225 Difference]: With dead ends: 24 [2020-10-19 22:07:29,323 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 22:07:29,324 INFO L677 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 [2020-10-19 22:07:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 22:07:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-19 22:07:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 22:07:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-19 22:07:29,329 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-10-19 22:07:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:29,330 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-19 22:07:29,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:07:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-19 22:07:29,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:07:29,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:29,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:29,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:07:29,332 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:29,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2048962070, now seen corresponding path program 1 times [2020-10-19 22:07:29,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:29,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046058105] [2020-10-19 22:07:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:07:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:07:29,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046058105] [2020-10-19 22:07:29,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:07:29,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:07:29,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574898619] [2020-10-19 22:07:29,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:07:29,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:29,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:07:29,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:07:29,442 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-19 22:07:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:29,507 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-19 22:07:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:07:29,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 22:07:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:29,508 INFO L225 Difference]: With dead ends: 37 [2020-10-19 22:07:29,509 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 22:07:29,510 INFO L677 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 [2020-10-19 22:07:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 22:07:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-10-19 22:07:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 22:07:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-19 22:07:29,514 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-10-19 22:07:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:29,515 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-19 22:07:29,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:07:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-19 22:07:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:07:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:29,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:29,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:07:29,517 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1191820108, now seen corresponding path program 1 times [2020-10-19 22:07:29,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:29,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400052276] [2020-10-19 22:07:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:29,533 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:07:29,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434731286] [2020-10-19 22:07:29,534 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 [2020-10-19 22:07:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:07:29,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 22:07:29,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:07:29,710 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-19 22:07:29,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:29,750 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:29,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:07:29,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400052276] [2020-10-19 22:07:29,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:07:29,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434731286] [2020-10-19 22:07:29,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:07:29,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-19 22:07:29,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377485151] [2020-10-19 22:07:29,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:07:29,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:07:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:07:29,782 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-10-19 22:07:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:32,136 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-19 22:07:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:07:32,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-19 22:07:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:32,139 INFO L225 Difference]: With dead ends: 49 [2020-10-19 22:07:32,139 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 22:07:32,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:07:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 22:07:32,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-19 22:07:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 22:07:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-19 22:07:32,146 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-10-19 22:07:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:32,147 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-19 22:07:32,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:07:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-19 22:07:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:07:32,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:32,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:32,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:32,368 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:32,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1732203566, now seen corresponding path program 2 times [2020-10-19 22:07:32,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:32,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214378496] [2020-10-19 22:07:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:32,394 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:07:32,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542326291] [2020-10-19 22:07:32,395 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 [2020-10-19 22:07:32,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:07:32,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:07:32,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:07:32,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:07:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:07:32,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214378496] [2020-10-19 22:07:32,546 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:07:32,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542326291] [2020-10-19 22:07:32,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:07:32,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-19 22:07:32,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532023470] [2020-10-19 22:07:32,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:07:32,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:32,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:07:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:07:32,549 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2020-10-19 22:07:32,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:32,661 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-19 22:07:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:07:32,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 22:07:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:32,663 INFO L225 Difference]: With dead ends: 30 [2020-10-19 22:07:32,663 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 22:07:32,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:07:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 22:07:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-19 22:07:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 22:07:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-19 22:07:32,669 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-10-19 22:07:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:32,670 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-19 22:07:32,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:07:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-19 22:07:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:07:32,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:32,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:32,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:32,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1746449968, now seen corresponding path program 3 times [2020-10-19 22:07:32,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:32,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662427747] [2020-10-19 22:07:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:32,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:07:32,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918255435] [2020-10-19 22:07:32,887 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 [2020-10-19 22:07:32,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-19 22:07:32,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:07:32,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 22:07:32,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:07:32,985 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-19 22:07:32,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:32,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:33,028 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-19 22:07:33,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 22:07:33,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662427747] [2020-10-19 22:07:33,126 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:07:33,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918255435] [2020-10-19 22:07:33,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:07:33,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-19 22:07:33,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097713839] [2020-10-19 22:07:33,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:07:33,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:33,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:07:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:07:33,129 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-10-19 22:07:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:33,536 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-19 22:07:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:07:33,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-19 22:07:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:33,538 INFO L225 Difference]: With dead ends: 36 [2020-10-19 22:07:33,538 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 22:07:33,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-10-19 22:07:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 22:07:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-10-19 22:07:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 22:07:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-19 22:07:33,544 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2020-10-19 22:07:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:33,545 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-19 22:07:33,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:07:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-19 22:07:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:07:33,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:33,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:33,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:33,759 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1047027442, now seen corresponding path program 4 times [2020-10-19 22:07:33,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:33,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404644449] [2020-10-19 22:07:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:33,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:07:33,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427363850] [2020-10-19 22:07:33,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:33,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 22:07:33,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:07:33,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:07:33,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:07:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:07:33,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404644449] [2020-10-19 22:07:33,955 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:07:33,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427363850] [2020-10-19 22:07:33,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:07:33,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-19 22:07:33,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497651287] [2020-10-19 22:07:33,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:07:33,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:33,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:07:33,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:07:33,957 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 9 states. [2020-10-19 22:07:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:34,108 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-19 22:07:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:07:34,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-19 22:07:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:34,112 INFO L225 Difference]: With dead ends: 49 [2020-10-19 22:07:34,112 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 22:07:34,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:07:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 22:07:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-19 22:07:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 22:07:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-19 22:07:34,119 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2020-10-19 22:07:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:34,119 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-19 22:07:34,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:07:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-19 22:07:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:07:34,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:07:34,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:07:34,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:34,331 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:07:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:07:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 155993684, now seen corresponding path program 5 times [2020-10-19 22:07:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:07:34,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305044377] [2020-10-19 22:07:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:07:34,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:07:34,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895504830] [2020-10-19 22:07:34,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:34,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-19 22:07:34,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:07:34,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-19 22:07:34,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:07:34,660 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-10-19 22:07:34,662 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:07:34,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:07:34,680 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:07:34,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-19 22:07:34,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 22:07:34,740 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2020-10-19 22:07:34,740 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:07:34,753 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:07:34,754 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:07:34,754 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:32 [2020-10-19 22:07:34,866 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-19 22:07:34,866 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:34,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:34,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:34,956 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-10-19 22:07:34,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:07:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:07:35,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305044377] [2020-10-19 22:07:35,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:07:35,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895504830] [2020-10-19 22:07:35,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:07:35,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-19 22:07:35,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124432313] [2020-10-19 22:07:35,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 22:07:35,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:07:35,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 22:07:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:07:35,067 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 14 states. [2020-10-19 22:07:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:07:42,339 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-19 22:07:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 22:07:42,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-19 22:07:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:07:42,341 INFO L225 Difference]: With dead ends: 54 [2020-10-19 22:07:42,341 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:07:42,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-10-19 22:07:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:07:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:07:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:07:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:07:42,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-19 22:07:42,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:07:42,347 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:07:42,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 22:07:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:07:42,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:07:42,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:07:42,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:07:42,734 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-10-19 22:07:42,734 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 33) no Hoare annotation was computed. [2020-10-19 22:07:42,734 INFO L274 CegarLoopResult]: For program point L31-2(lines 31 33) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point L52-2(lines 52 56) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L270 CegarLoopResult]: At program point L52-3(lines 52 56) the Hoare annotation is: (let ((.cse1 (not (= |ULTIMATE.start_main_~#array2~0.base| |ULTIMATE.start_main_~#array1~0.base|))) (.cse3 (= (+ ULTIMATE.start_main_~num~0 1) 0)) (.cse0 (= ULTIMATE.start_main_~sum~0 0)) (.cse2 (<= 1 ULTIMATE.start_main_~count~0))) (or (and .cse0 (<= ULTIMATE.start_main_~count~0 1) .cse1 .cse2 .cse3) (and .cse0 (= ULTIMATE.start_main_~count~0 0) .cse1 .cse3) (and .cse0 (<= 2 ~ARR_SIZE~0) .cse2))) [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:07:42,735 INFO L274 CegarLoopResult]: For program point L32-4(line 32) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L270 CegarLoopResult]: At program point L74-3(lines 74 77) the Hoare annotation is: (let ((.cse1 (<= 1 (div (+ ~ARR_SIZE~0 (- 1)) 2))) (.cse3 (< 0 ULTIMATE.start_main_~pivot~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse0 (= ULTIMATE.start_main_~sum~0 0)) (.cse2 (= ULTIMATE.start_main_~count~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse3 (<= 1 ULTIMATE.start_main_~count~0) .cse4) (and (<= ~ARR_SIZE~0 0) .cse0 .cse2))) [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L74-4(lines 74 77) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-10-19 22:07:42,736 INFO L274 CegarLoopResult]: For program point L34-3(line 34) no Hoare annotation was computed. [2020-10-19 22:07:42,737 INFO L274 CegarLoopResult]: For program point L59-1(lines 41 81) no Hoare annotation was computed. [2020-10-19 22:07:42,737 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 72) no Hoare annotation was computed. [2020-10-19 22:07:42,737 INFO L277 CegarLoopResult]: At program point L80(lines 40 81) the Hoare annotation is: true [2020-10-19 22:07:42,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:07:42 BoogieIcfgContainer [2020-10-19 22:07:42,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:07:42,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:07:42,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:07:42,755 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:07:42,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:07:28" (3/4) ... [2020-10-19 22:07:42,759 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:07:42,771 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-19 22:07:42,771 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:07:42,772 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:07:42,772 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:07:42,830 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:07:42,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:07:42,832 INFO L168 Benchmark]: Toolchain (without parser) took 16994.86 ms. Allocated memory was 41.9 MB in the beginning and 63.4 MB in the end (delta: 21.5 MB). Free memory was 20.5 MB in the beginning and 27.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,833 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 32.0 MB. Free memory was 9.3 MB in the beginning and 9.2 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.55 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.7 MB in the beginning and 20.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 42.5 MB. Free memory was 20.6 MB in the beginning and 18.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,834 INFO L168 Benchmark]: Boogie Preprocessor took 37.69 ms. Allocated memory is still 42.5 MB. Free memory was 18.7 MB in the beginning and 17.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,835 INFO L168 Benchmark]: RCFGBuilder took 2514.34 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 17.1 MB in the beginning and 18.0 MB in the end (delta: -923.1 kB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,836 INFO L168 Benchmark]: TraceAbstraction took 14016.31 ms. Allocated memory was 44.6 MB in the beginning and 63.4 MB in the end (delta: 18.9 MB). Free memory was 17.5 MB in the beginning and 31.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,836 INFO L168 Benchmark]: Witness Printer took 75.82 ms. Allocated memory is still 63.4 MB. Free memory was 31.8 MB in the beginning and 27.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:07:42,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 32.0 MB. Free memory was 9.3 MB in the beginning and 9.2 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 296.55 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.7 MB in the beginning and 20.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 42.5 MB. Free memory was 20.6 MB in the beginning and 18.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.69 ms. Allocated memory is still 42.5 MB. Free memory was 18.7 MB in the beginning and 17.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 2514.34 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 17.1 MB in the beginning and 18.0 MB in the end (delta: -923.1 kB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 14016.31 ms. Allocated memory was 44.6 MB in the beginning and 63.4 MB in the end (delta: 18.9 MB). Free memory was 17.5 MB in the beginning and 31.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 14.3 GB. * Witness Printer took 75.82 ms. Allocated memory is still 63.4 MB. Free memory was 31.8 MB in the beginning and 27.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: 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: 40]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((sum == 0 && count <= 1) && !(array2 == array1)) && 1 <= count) && num + 1 == 0) || (((sum == 0 && count == 0) && !(array2 == array1)) && num + 1 == 0)) || ((sum == 0 && 2 <= ARR_SIZE) && 1 <= count) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: (((((sum == 0 && 1 <= (ARR_SIZE + -1) / 2) && count == 0) && 0 < pivot) && cond == 1) || (((1 <= (ARR_SIZE + -1) / 2 && 0 < pivot) && 1 <= count) && cond == 1)) || ((ARR_SIZE <= 0 && sum == 0) && count == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 240 SDslu, 291 SDs, 0 SdLazy, 489 SolverSat, 91 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=7, 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, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 22 NumberOfFragments, 95 HoareAnnotationTreeSize, 3 FomulaSimplifications, 499 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 17331 SizeOfPredicates, 36 NumberOfNonLiveVariables, 580 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 17/47 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...