./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005.i --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/loop-lit/cggmp2005.i -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 01f6eb21817013b641802ab6861c8631a3bc6c67 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:00:44,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:00:44,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:00:44,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:00:44,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:00:44,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:00:44,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:00:44,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:00:44,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:00:44,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:00:44,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:00:44,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:00:44,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:00:44,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:00:44,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:00:44,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:00:44,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:00:44,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:00:44,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:00:44,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:00:44,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:00:44,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:00:44,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:00:44,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:00:44,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:00:44,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:00:44,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:00:44,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:00:44,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:00:44,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:00:44,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:00:44,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:00:44,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:00:44,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:00:44,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:00:44,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:00:44,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:00:44,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:00:44,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:00:44,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:00:44,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:00:44,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:00:44,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:00:44,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:00:44,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:00:44,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:00:44,743 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:00:44,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:00:44,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:00:44,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:00:44,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:00:44,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:00:44,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:00:44,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:00:44,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:00:44,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:00:44,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:00:44,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:00:44,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:00:44,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:00:44,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:00:44,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:00:44,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:00:44,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:00:44,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:00:44,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:00:44,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:00:44,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:00:44,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:00:44,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:00:44,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:00:44,753 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 -> 01f6eb21817013b641802ab6861c8631a3bc6c67 [2020-10-20 01:00:44,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:00:45,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:00:45,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:00:45,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:00:45,015 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:00:45,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005.i [2020-10-20 01:00:45,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6417144c8/3bd79beff3ed4ece8d97d3d1868ceef6/FLAG5c9dd47bb [2020-10-20 01:00:45,513 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:00:45,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005.i [2020-10-20 01:00:45,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6417144c8/3bd79beff3ed4ece8d97d3d1868ceef6/FLAG5c9dd47bb [2020-10-20 01:00:45,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6417144c8/3bd79beff3ed4ece8d97d3d1868ceef6 [2020-10-20 01:00:45,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:00:45,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:00:45,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:45,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:00:45,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:00:45,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:45" (1/1) ... [2020-10-20 01:00:45,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0ae80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:45, skipping insertion in model container [2020-10-20 01:00:45,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:00:45" (1/1) ... [2020-10-20 01:00:45,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:00:45,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:00:46,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:46,212 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:00:46,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:00:46,241 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:00:46,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46 WrapperNode [2020-10-20 01:00:46,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:00:46,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:46,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:00:46,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:00:46,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:00:46,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:00:46,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:00:46,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:00:46,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (1/1) ... [2020-10-20 01:00:46,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:00:46,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:00:46,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:00:46,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:00:46,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (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 01:00:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:00:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:00:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:00:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:00:46,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:00:46,576 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 01:00:46,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:46 BoogieIcfgContainer [2020-10-20 01:00:46,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:00:46,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:00:46,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:00:46,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:00:46,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:00:45" (1/3) ... [2020-10-20 01:00:46,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c53fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:46, skipping insertion in model container [2020-10-20 01:00:46,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:00:46" (2/3) ... [2020-10-20 01:00:46,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c53fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:00:46, skipping insertion in model container [2020-10-20 01:00:46,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:46" (3/3) ... [2020-10-20 01:00:46,587 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2020-10-20 01:00:46,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:00:46,605 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:00:46,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:00:46,641 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:00:46,642 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:00:46,642 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:00:46,642 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:00:46,642 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:00:46,642 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:00:46,642 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:00:46,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:00:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 01:00:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 01:00:46,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:46,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:46,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:46,669 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-10-20 01:00:46,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:46,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025616573] [2020-10-20 01:00:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:46,834 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 01:00:46,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025616573] [2020-10-20 01:00:46,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:00:46,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:00:46,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408248278] [2020-10-20 01:00:46,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:00:46,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:46,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:00:46,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:00:46,862 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-20 01:00:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:46,909 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2020-10-20 01:00:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:00:46,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 01:00:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:46,930 INFO L225 Difference]: With dead ends: 25 [2020-10-20 01:00:46,930 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 01:00:46,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:00:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 01:00:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 01:00:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 01:00:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-20 01:00:46,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-10-20 01:00:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:46,991 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-20 01:00:46,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:00:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-20 01:00:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 01:00:46,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:46,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:46,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:00:46,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:46,994 INFO L82 PathProgramCache]: Analyzing trace with hash 438817201, now seen corresponding path program 1 times [2020-10-20 01:00:46,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:46,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646335204] [2020-10-20 01:00:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646335204] [2020-10-20 01:00:47,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918787558] [2020-10-20 01:00:47,056 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 01:00:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 01:00:47,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:47,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:47,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-20 01:00:47,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632274907] [2020-10-20 01:00:47,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:00:47,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:47,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:00:47,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:00:47,301 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2020-10-20 01:00:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:47,333 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-20 01:00:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:00:47,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-20 01:00:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:47,343 INFO L225 Difference]: With dead ends: 17 [2020-10-20 01:00:47,343 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 01:00:47,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:00:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 01:00:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 01:00:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 01:00:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 01:00:47,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-10-20 01:00:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:47,349 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 01:00:47,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:00:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 01:00:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 01:00:47,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:47,351 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:47,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:00:47,562 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:47,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 2 times [2020-10-20 01:00:47,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:47,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117191465] [2020-10-20 01:00:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:47,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117191465] [2020-10-20 01:00:47,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058983170] [2020-10-20 01:00:47,623 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 01:00:47,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:00:47,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:00:47,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 01:00:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:47,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:47,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-20 01:00:47,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103452727] [2020-10-20 01:00:47,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:00:47,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:47,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:00:47,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:00:47,758 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2020-10-20 01:00:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:47,788 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 01:00:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:00:47,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-20 01:00:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:47,791 INFO L225 Difference]: With dead ends: 18 [2020-10-20 01:00:47,791 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 01:00:47,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:00:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 01:00:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 01:00:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 01:00:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 01:00:47,799 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-20 01:00:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:47,801 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 01:00:47,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:00:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 01:00:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 01:00:47,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:47,803 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:48,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:48,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:48,006 INFO L82 PathProgramCache]: Analyzing trace with hash 469647633, now seen corresponding path program 3 times [2020-10-20 01:00:48,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:48,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218717572] [2020-10-20 01:00:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218717572] [2020-10-20 01:00:48,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662778296] [2020-10-20 01:00:48,078 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 01:00:48,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 01:00:48,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:00:48,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 01:00:48,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:48,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-20 01:00:48,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964302479] [2020-10-20 01:00:48,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 01:00:48,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:48,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 01:00:48,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:00:48,207 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2020-10-20 01:00:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:48,228 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-20 01:00:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:00:48,229 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-10-20 01:00:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:48,229 INFO L225 Difference]: With dead ends: 19 [2020-10-20 01:00:48,229 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 01:00:48,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:00:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 01:00:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 01:00:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 01:00:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 01:00:48,234 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-10-20 01:00:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:48,234 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 01:00:48,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 01:00:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 01:00:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:00:48,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:48,235 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:48,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:48,446 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1020395060, now seen corresponding path program 4 times [2020-10-20 01:00:48,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:48,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227799633] [2020-10-20 01:00:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227799633] [2020-10-20 01:00:48,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10634647] [2020-10-20 01:00:48,639 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 [2020-10-20 01:00:48,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 01:00:48,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:00:48,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 01:00:48,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:48,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:00:48,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 01:00:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:48,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:00:48,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-20 01:00:48,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666633575] [2020-10-20 01:00:48,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 01:00:48,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:48,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 01:00:48,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:00:48,728 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 9 states. [2020-10-20 01:00:48,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:48,794 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 01:00:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:00:48,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-20 01:00:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:48,795 INFO L225 Difference]: With dead ends: 20 [2020-10-20 01:00:48,796 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 01:00:48,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:00:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 01:00:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 01:00:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 01:00:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-20 01:00:48,800 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-20 01:00:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:48,801 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-20 01:00:48,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 01:00:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-20 01:00:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 01:00:48,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:00:48,802 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:00:49,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:00:49,014 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:00:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:00:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash 32921713, now seen corresponding path program 5 times [2020-10-20 01:00:49,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:00:49,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331556444] [2020-10-20 01:00:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:00:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:00:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:49,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331556444] [2020-10-20 01:00:49,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023087315] [2020-10-20 01:00:49,109 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 [2020-10-20 01:00:49,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 01:00:49,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:00:49,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 01:00:49,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:00:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:00:49,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:00:49,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2020-10-20 01:00:49,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321657377] [2020-10-20 01:00:49,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:00:49,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:00:49,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:00:49,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:00:49,260 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-10-20 01:00:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:00:49,290 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-20 01:00:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:00:49,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 01:00:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:00:49,293 INFO L225 Difference]: With dead ends: 14 [2020-10-20 01:00:49,293 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:00:49,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:00:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:00:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:00:49,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:00:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:00:49,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-20 01:00:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:00:49,295 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:00:49,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:00:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:00:49,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:00:49,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 01:00:49,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:00:49,588 INFO L277 CegarLoopResult]: At program point L33(lines 24 34) the Hoare annotation is: true [2020-10-20 01:00:49,588 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:00:49,588 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 01:00:49,588 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:00:49,588 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:00:49,588 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:00:49,589 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 31) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~i~0 1) (<= ULTIMATE.start_main_~j~0 10) (<= 10 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 7) (<= 7 ULTIMATE.start_main_~j~0) (<= 7 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 7)) (and (<= ULTIMATE.start_main_~i~0 5) (<= ULTIMATE.start_main_~j~0 8) (<= 8 ULTIMATE.start_main_~j~0) (<= 5 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 9) (<= 9 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 3) (<= 3 ULTIMATE.start_main_~i~0)) (and (<= 9 ULTIMATE.start_main_~i~0) (<= 6 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 6))) [2020-10-20 01:00:49,589 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 31) no Hoare annotation was computed. [2020-10-20 01:00:49,589 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 01:00:49,589 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-20 01:00:49,589 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-20 01:00:49,590 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 01:00:49,590 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 01:00:49,590 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 01:00:49,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:00:49 BoogieIcfgContainer [2020-10-20 01:00:49,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:00:49,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:00:49,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:00:49,609 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:00:49,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:00:46" (3/4) ... [2020-10-20 01:00:49,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:00:49,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 01:00:49,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:00:49,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:49,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:00:49,674 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:00:49,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:00:49,677 INFO L168 Benchmark]: Toolchain (without parser) took 3782.04 ms. Allocated memory was 36.2 MB in the beginning and 56.1 MB in the end (delta: 19.9 MB). Free memory was 10.2 MB in the beginning and 17.7 MB in the end (delta: -7.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,678 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 36.2 MB. Free memory is still 15.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:00:49,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.24 ms. Allocated memory was 36.2 MB in the beginning and 45.1 MB in the end (delta: 8.9 MB). Free memory was 9.4 MB in the beginning and 28.2 MB in the end (delta: -18.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.37 ms. Allocated memory is still 45.1 MB. Free memory was 28.1 MB in the beginning and 26.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,680 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 ms. Allocated memory is still 45.1 MB. Free memory was 26.4 MB in the beginning and 25.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,680 INFO L168 Benchmark]: RCFGBuilder took 284.40 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 25.2 MB in the beginning and 28.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,681 INFO L168 Benchmark]: TraceAbstraction took 3029.09 ms. Allocated memory was 48.2 MB in the beginning and 56.1 MB in the end (delta: 7.9 MB). Free memory was 28.3 MB in the beginning and 21.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,682 INFO L168 Benchmark]: Witness Printer took 65.99 ms. Allocated memory is still 56.1 MB. Free memory was 20.5 MB in the beginning and 17.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:00:49,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 36.2 MB. Free memory is still 15.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 341.24 ms. Allocated memory was 36.2 MB in the beginning and 45.1 MB in the end (delta: 8.9 MB). Free memory was 9.4 MB in the beginning and 28.2 MB in the end (delta: -18.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.37 ms. Allocated memory is still 45.1 MB. Free memory was 28.1 MB in the beginning and 26.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.64 ms. Allocated memory is still 45.1 MB. Free memory was 26.4 MB in the beginning and 25.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 284.40 ms. Allocated memory was 45.1 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Free memory was 25.2 MB in the beginning and 28.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3029.09 ms. Allocated memory was 48.2 MB in the beginning and 56.1 MB in the end (delta: 7.9 MB). Free memory was 28.3 MB in the beginning and 21.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. * Witness Printer took 65.99 ms. Allocated memory is still 56.1 MB. Free memory was 20.5 MB in the beginning and 17.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 28]: Loop Invariant Derived loop invariant: (((((i == 1 && j <= 10) && 10 <= j) || (((j <= 7 && 7 <= j) && 7 <= i) && i <= 7)) || (((i <= 5 && j <= 8) && 8 <= j) && 5 <= i)) || (((j <= 9 && 9 <= j) && i <= 3) && 3 <= i)) || ((9 <= i && 6 <= j) && j <= 6) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 1 SDslu, 90 SDs, 0 SdLazy, 102 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 62 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 3422 SizeOfPredicates, 9 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 26/70 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...