./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/list-2.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/list-properties/list-2.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 857285933727e0d6539ccc24abeb7a5fe95b45c6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:42:24,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:42:24,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:42:24,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:42:24,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:42:24,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:42:24,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:42:24,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:42:24,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:42:24,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:42:24,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:42:24,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:42:24,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:42:24,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:42:24,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:42:24,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:42:24,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:42:24,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:42:24,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:42:24,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:42:24,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:42:24,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:42:24,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:42:24,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:42:24,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:42:24,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:42:24,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:42:24,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:42:24,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:42:24,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:42:24,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:42:24,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:42:24,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:42:24,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:42:24,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:42:24,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:42:24,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:42:24,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:42:24,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:42:24,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:42:24,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:42:24,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:42:24,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:42:24,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:42:24,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:42:24,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:42:24,460 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:42:24,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:42:24,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:42:24,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:42:24,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:42:24,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:42:24,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:42:24,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:42:24,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:42:24,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:42:24,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:42:24,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:42:24,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:42:24,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:42:24,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:42:24,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:42:24,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:42:24,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:42:24,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:42:24,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:42:24,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:42:24,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:42:24,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:42:24,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:42:24,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:42:24,465 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 -> 857285933727e0d6539ccc24abeb7a5fe95b45c6 [2020-10-20 00:42:24,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:42:24,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:42:24,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:42:24,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:42:24,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:42:24,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-2.i [2020-10-20 00:42:24,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aecbbc459/b4e90c3dcc8b411792d38ba07faada2d/FLAG6c648983f [2020-10-20 00:42:25,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:42:25,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-2.i [2020-10-20 00:42:25,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aecbbc459/b4e90c3dcc8b411792d38ba07faada2d/FLAG6c648983f [2020-10-20 00:42:25,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aecbbc459/b4e90c3dcc8b411792d38ba07faada2d [2020-10-20 00:42:25,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:42:25,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:42:25,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:42:25,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:42:25,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:42:25,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:42:25" (1/1) ... [2020-10-20 00:42:25,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c25394f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:25, skipping insertion in model container [2020-10-20 00:42:25,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:42:25" (1/1) ... [2020-10-20 00:42:25,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:42:25,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:42:26,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:42:26,147 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:42:26,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:42:26,285 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:42:26,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26 WrapperNode [2020-10-20 00:42:26,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:42:26,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:42:26,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:42:26,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:42:26,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:42:26,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:42:26,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:42:26,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:42:26,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (1/1) ... [2020-10-20 00:42:26,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:42:26,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:42:26,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:42:26,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:42:26,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (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 [2020-10-20 00:42:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:42:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:42:26,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 00:42:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 00:42:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:42:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 00:42:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:42:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:42:26,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:42:26,851 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:42:26,852 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:42:26,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:42:26 BoogieIcfgContainer [2020-10-20 00:42:26,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:42:26,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:42:26,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:42:26,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:42:26,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:42:25" (1/3) ... [2020-10-20 00:42:26,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75485efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:42:26, skipping insertion in model container [2020-10-20 00:42:26,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:42:26" (2/3) ... [2020-10-20 00:42:26,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75485efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:42:26, skipping insertion in model container [2020-10-20 00:42:26,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:42:26" (3/3) ... [2020-10-20 00:42:26,865 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-10-20 00:42:26,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:42:26,900 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:42:26,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:42:26,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:42:26,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:42:26,998 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:42:26,998 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:42:27,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:42:27,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:42:27,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:42:27,001 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:42:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-20 00:42:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:42:27,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:27,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:27,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:27,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1262221238, now seen corresponding path program 1 times [2020-10-20 00:42:27,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:27,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998149330] [2020-10-20 00:42:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:27,198 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 00:42:27,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998149330] [2020-10-20 00:42:27,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:27,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:42:27,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248190257] [2020-10-20 00:42:27,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:42:27,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:27,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:42:27,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:42:27,222 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-10-20 00:42:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:27,241 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2020-10-20 00:42:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:42:27,242 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-20 00:42:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:27,252 INFO L225 Difference]: With dead ends: 51 [2020-10-20 00:42:27,252 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 00:42:27,256 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 [2020-10-20 00:42:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 00:42:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 00:42:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 00:42:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-20 00:42:27,290 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-10-20 00:42:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:27,291 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-20 00:42:27,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:42:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-20 00:42:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 00:42:27,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:27,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:27,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:42:27,292 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -488966590, now seen corresponding path program 1 times [2020-10-20 00:42:27,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:27,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513294576] [2020-10-20 00:42:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:27,440 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 00:42:27,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513294576] [2020-10-20 00:42:27,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:27,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:42:27,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189613007] [2020-10-20 00:42:27,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:42:27,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:27,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:42:27,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:42:27,445 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-10-20 00:42:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:27,571 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-20 00:42:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:42:27,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 00:42:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:27,575 INFO L225 Difference]: With dead ends: 52 [2020-10-20 00:42:27,575 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 00:42:27,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:42:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 00:42:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2020-10-20 00:42:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 00:42:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-20 00:42:27,585 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-20 00:42:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:27,586 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 00:42:27,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:42:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-20 00:42:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 00:42:27,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:27,587 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:27,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:42:27,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:27,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2080072957, now seen corresponding path program 1 times [2020-10-20 00:42:27,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:27,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167601287] [2020-10-20 00:42:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:27,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167601287] [2020-10-20 00:42:27,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:27,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:42:27,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787912184] [2020-10-20 00:42:27,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:42:27,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:42:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:42:27,678 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2020-10-20 00:42:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:27,793 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-20 00:42:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:42:27,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 00:42:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:27,795 INFO L225 Difference]: With dead ends: 54 [2020-10-20 00:42:27,795 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 00:42:27,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:42:27,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 00:42:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2020-10-20 00:42:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:42:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-20 00:42:27,802 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2020-10-20 00:42:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:27,803 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-20 00:42:27,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:42:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-20 00:42:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 00:42:27,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:27,805 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:27,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:42:27,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:27,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1022845187, now seen corresponding path program 1 times [2020-10-20 00:42:27,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:27,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106712448] [2020-10-20 00:42:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:27,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106712448] [2020-10-20 00:42:27,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:42:27,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:42:27,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387505162] [2020-10-20 00:42:27,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:42:27,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:27,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:42:27,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:42:27,931 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-20 00:42:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:28,053 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-20 00:42:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:42:28,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 00:42:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:28,054 INFO L225 Difference]: With dead ends: 54 [2020-10-20 00:42:28,054 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 00:42:28,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:42:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 00:42:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2020-10-20 00:42:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 00:42:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-20 00:42:28,060 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 20 [2020-10-20 00:42:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:28,060 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-20 00:42:28,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:42:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-20 00:42:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 00:42:28,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:28,061 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:28,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:42:28,062 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:28,062 INFO L82 PathProgramCache]: Analyzing trace with hash -322714455, now seen corresponding path program 1 times [2020-10-20 00:42:28,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:28,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451892675] [2020-10-20 00:42:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:28,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451892675] [2020-10-20 00:42:28,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77094858] [2020-10-20 00:42:28,218 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 00:42:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-20 00:42:28,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:28,365 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:28,378 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,385 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,385 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,386 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:28,459 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,459 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:42:28,460 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,474 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,480 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:28,481 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,492 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,493 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,493 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:21 [2020-10-20 00:42:28,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:42:28,532 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-10-20 00:42:28,533 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,541 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,542 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,542 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:15 [2020-10-20 00:42:28,611 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-20 00:42:28,612 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,623 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,626 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:28,627 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:22 [2020-10-20 00:42:28,685 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 00:42:28,687 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:28,695 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:28,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:26, output treesize:3 [2020-10-20 00:42:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:28,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:28,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-10-20 00:42:28,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890501429] [2020-10-20 00:42:28,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 00:42:28,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:28,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 00:42:28,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:42:28,702 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 13 states. [2020-10-20 00:42:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:29,035 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-10-20 00:42:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 00:42:29,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-20 00:42:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:29,037 INFO L225 Difference]: With dead ends: 56 [2020-10-20 00:42:29,037 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 00:42:29,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-20 00:42:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 00:42:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-10-20 00:42:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 00:42:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-20 00:42:29,043 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2020-10-20 00:42:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:29,044 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-20 00:42:29,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 00:42:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-20 00:42:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 00:42:29,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:29,046 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:29,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:29,260 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:29,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:29,260 INFO L82 PathProgramCache]: Analyzing trace with hash 477596521, now seen corresponding path program 1 times [2020-10-20 00:42:29,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:29,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984648100] [2020-10-20 00:42:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:29,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984648100] [2020-10-20 00:42:29,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868913437] [2020-10-20 00:42:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 00:42:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:29,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-20 00:42:29,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:29,500 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:29,501 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,506 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,506 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:29,579 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,580 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:42:29,581 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,592 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,596 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:29,597 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,607 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,608 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:21 [2020-10-20 00:42:29,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:42:29,643 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-10-20 00:42:29,644 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,654 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,654 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:15 [2020-10-20 00:42:29,698 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-20 00:42:29,698 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,711 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:29,711 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:22 [2020-10-20 00:42:29,801 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 00:42:29,804 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,811 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:29,813 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:29,814 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:26, output treesize:3 [2020-10-20 00:42:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:29,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:29,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-10-20 00:42:29,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706278870] [2020-10-20 00:42:29,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 00:42:29,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:29,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 00:42:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:42:29,830 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 13 states. [2020-10-20 00:42:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:30,212 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-20 00:42:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 00:42:30,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-20 00:42:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:30,213 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:42:30,214 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 00:42:30,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-20 00:42:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 00:42:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-10-20 00:42:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 00:42:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-20 00:42:30,234 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 22 [2020-10-20 00:42:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:30,235 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-20 00:42:30,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 00:42:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-20 00:42:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 00:42:30,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:30,237 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, 1, 1] [2020-10-20 00:42:30,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:30,439 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash -168333404, now seen corresponding path program 1 times [2020-10-20 00:42:30,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:30,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195403011] [2020-10-20 00:42:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:30,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195403011] [2020-10-20 00:42:30,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7679180] [2020-10-20 00:42:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 00:42:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-20 00:42:30,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:30,645 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:30,645 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,649 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,649 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,649 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:30,677 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,678 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:42:30,679 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,686 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-10-20 00:42:30,698 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:30,698 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,712 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,719 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:30,720 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,731 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,732 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:26 [2020-10-20 00:42:30,747 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_21|], 2=[|v_#memory_$Pointer$.base_16|, |v_#memory_$Pointer$.offset_14|]} [2020-10-20 00:42:30,753 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2020-10-20 00:42:30,753 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,793 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,794 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 108 [2020-10-20 00:42:30,799 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 00:42:30,799 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 00:42:30,801 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,821 INFO L625 ElimStorePlain]: treesize reduction 36, result has 63.3 percent of original size [2020-10-20 00:42:30,825 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-10-20 00:42:30,826 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,834 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,834 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:105, output treesize:27 [2020-10-20 00:42:30,873 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2020-10-20 00:42:30,874 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,883 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 00:42:30,883 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,894 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:7 [2020-10-20 00:42:30,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-10-20 00:42:30,900 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:30,903 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:30,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-20 00:42:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:30,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:30,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-20 00:42:30,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398317532] [2020-10-20 00:42:30,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:42:30,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:30,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:42:30,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:42:30,908 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 10 states. [2020-10-20 00:42:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:31,180 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-20 00:42:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:42:31,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-20 00:42:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:31,182 INFO L225 Difference]: With dead ends: 69 [2020-10-20 00:42:31,182 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 00:42:31,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-20 00:42:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 00:42:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2020-10-20 00:42:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 00:42:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-20 00:42:31,189 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 24 [2020-10-20 00:42:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:31,190 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-20 00:42:31,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:42:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-20 00:42:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 00:42:31,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:31,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:31,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:31,399 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash 970919391, now seen corresponding path program 1 times [2020-10-20 00:42:31,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:31,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665655576] [2020-10-20 00:42:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:31,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665655576] [2020-10-20 00:42:31,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332951351] [2020-10-20 00:42:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 00:42:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:31,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-20 00:42:31,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:31,669 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:31,669 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,674 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,675 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,675 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:31,690 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,691 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:42:31,692 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,700 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-10-20 00:42:31,711 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:31,712 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,729 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:31,729 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,741 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,742 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:26 [2020-10-20 00:42:31,754 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_22|], 2=[|v_#memory_$Pointer$.base_18|, |v_#memory_$Pointer$.offset_16|]} [2020-10-20 00:42:31,759 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2020-10-20 00:42:31,759 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,788 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,788 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 108 [2020-10-20 00:42:31,791 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 00:42:31,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 00:42:31,792 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,811 INFO L625 ElimStorePlain]: treesize reduction 36, result has 63.3 percent of original size [2020-10-20 00:42:31,814 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-10-20 00:42:31,815 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,822 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,822 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:105, output treesize:27 [2020-10-20 00:42:31,854 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2020-10-20 00:42:31,855 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,869 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 00:42:31,870 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,878 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,878 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:7 [2020-10-20 00:42:31,884 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-10-20 00:42:31,885 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:31,887 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:31,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-20 00:42:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:31,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:31,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-20 00:42:31,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206423292] [2020-10-20 00:42:31,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 00:42:31,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:31,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 00:42:31,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-20 00:42:31,927 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 11 states. [2020-10-20 00:42:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:32,195 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-20 00:42:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:42:32,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-20 00:42:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:32,196 INFO L225 Difference]: With dead ends: 71 [2020-10-20 00:42:32,196 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 00:42:32,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-20 00:42:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 00:42:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 40. [2020-10-20 00:42:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 00:42:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-20 00:42:32,203 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 26 [2020-10-20 00:42:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:32,203 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-20 00:42:32,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 00:42:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-20 00:42:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 00:42:32,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:32,205 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:32,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:32,418 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:32,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:32,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2131998753, now seen corresponding path program 2 times [2020-10-20 00:42:32,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:32,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966322393] [2020-10-20 00:42:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:32,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966322393] [2020-10-20 00:42:32,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453778923] [2020-10-20 00:42:32,564 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 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 00:42:32,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 00:42:32,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:42:32,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-20 00:42:32,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:32,626 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:32,626 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,629 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:32,645 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,645 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:42:32,646 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,652 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-10-20 00:42:32,667 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:32,667 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,676 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,681 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:32,682 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,703 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,703 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:26 [2020-10-20 00:42:32,717 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_23|], 2=[|v_#memory_$Pointer$.base_20|, |v_#memory_$Pointer$.offset_18|]} [2020-10-20 00:42:32,721 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2020-10-20 00:42:32,721 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,749 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,750 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 108 [2020-10-20 00:42:32,752 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 00:42:32,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 00:42:32,753 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,774 INFO L625 ElimStorePlain]: treesize reduction 36, result has 63.3 percent of original size [2020-10-20 00:42:32,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-10-20 00:42:32,778 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,783 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,784 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,784 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:105, output treesize:27 [2020-10-20 00:42:32,810 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2020-10-20 00:42:32,810 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,819 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 00:42:32,819 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,824 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,825 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:7 [2020-10-20 00:42:32,829 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-10-20 00:42:32,829 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:32,831 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:32,831 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-20 00:42:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:32,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:32,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-20 00:42:32,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493768129] [2020-10-20 00:42:32,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 00:42:32,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:32,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 00:42:32,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-20 00:42:32,847 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 11 states. [2020-10-20 00:42:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:33,096 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-20 00:42:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:42:33,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-20 00:42:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:33,097 INFO L225 Difference]: With dead ends: 64 [2020-10-20 00:42:33,097 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 00:42:33,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-20 00:42:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 00:42:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2020-10-20 00:42:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 00:42:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-20 00:42:33,102 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 26 [2020-10-20 00:42:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:33,102 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-20 00:42:33,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 00:42:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-20 00:42:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 00:42:33,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:33,103 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:33,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:33,313 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:33,314 INFO L82 PathProgramCache]: Analyzing trace with hash 524355472, now seen corresponding path program 2 times [2020-10-20 00:42:33,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:33,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810475403] [2020-10-20 00:42:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:33,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810475403] [2020-10-20 00:42:33,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623377994] [2020-10-20 00:42:33,456 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:33,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 00:42:33,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:42:33,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-20 00:42:33,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:33,548 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:33,548 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,553 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:33,578 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,579 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 00:42:33,579 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,610 INFO L625 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2020-10-20 00:42:33,615 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:33,615 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,627 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,627 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:31 [2020-10-20 00:42:33,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:42:33,659 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-10-20 00:42:33,659 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,667 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,668 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,668 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:25 [2020-10-20 00:42:33,705 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,706 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-10-20 00:42:33,707 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,718 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,722 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-20 00:42:33,723 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,734 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,734 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:30 [2020-10-20 00:42:33,788 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 00:42:33,789 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-10-20 00:42:33,790 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,801 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:33,801 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:30 [2020-10-20 00:42:33,866 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-20 00:42:33,867 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,882 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:33,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2020-10-20 00:42:33,943 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-10-20 00:42:33,945 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:33,952 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:33,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:41, output treesize:3 [2020-10-20 00:42:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:33,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:33,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-10-20 00:42:33,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592453175] [2020-10-20 00:42:33,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 00:42:33,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 00:42:33,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-20 00:42:33,973 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 18 states. [2020-10-20 00:42:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:34,579 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-20 00:42:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 00:42:34,579 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-10-20 00:42:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:34,580 INFO L225 Difference]: With dead ends: 75 [2020-10-20 00:42:34,581 INFO L226 Difference]: Without dead ends: 65 [2020-10-20 00:42:34,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2020-10-20 00:42:34,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-20 00:42:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-10-20 00:42:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 00:42:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-20 00:42:34,588 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 26 [2020-10-20 00:42:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:34,588 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-20 00:42:34,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 00:42:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-20 00:42:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 00:42:34,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:34,591 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, 1, 1, 1, 1] [2020-10-20 00:42:34,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:34,792 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash 775122512, now seen corresponding path program 1 times [2020-10-20 00:42:34,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:34,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033132351] [2020-10-20 00:42:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:34,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033132351] [2020-10-20 00:42:34,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250400479] [2020-10-20 00:42:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:34,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-20 00:42:34,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:35,006 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:35,006 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,010 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 00:42:35,035 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,035 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 00:42:35,036 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,062 INFO L625 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2020-10-20 00:42:35,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:35,066 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,077 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,077 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,078 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:31 [2020-10-20 00:42:35,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:42:35,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-10-20 00:42:35,115 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,125 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,126 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,126 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:25 [2020-10-20 00:42:35,162 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,162 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-10-20 00:42:35,163 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,178 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-20 00:42:35,178 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,188 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,188 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,188 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:30 [2020-10-20 00:42:35,247 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 00:42:35,247 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-10-20 00:42:35,248 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,259 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,269 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:35,269 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:30 [2020-10-20 00:42:35,347 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-20 00:42:35,347 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,375 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:35,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2020-10-20 00:42:35,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-10-20 00:42:35,470 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,476 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:35,478 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:35,478 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:41, output treesize:3 [2020-10-20 00:42:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:42:35,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:35,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-10-20 00:42:35,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975015566] [2020-10-20 00:42:35,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 00:42:35,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:35,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 00:42:35,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-20 00:42:35,501 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 18 states. [2020-10-20 00:42:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:36,133 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-20 00:42:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 00:42:36,135 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-10-20 00:42:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:36,136 INFO L225 Difference]: With dead ends: 95 [2020-10-20 00:42:36,136 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 00:42:36,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-10-20 00:42:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 00:42:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 61. [2020-10-20 00:42:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 00:42:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-20 00:42:36,151 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 26 [2020-10-20 00:42:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:36,151 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-20 00:42:36,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 00:42:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-20 00:42:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 00:42:36,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:36,156 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:36,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:36,371 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:36,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2117047499, now seen corresponding path program 3 times [2020-10-20 00:42:36,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:36,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466121845] [2020-10-20 00:42:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:42:36,683 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 00:42:36,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466121845] [2020-10-20 00:42:36,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129274920] [2020-10-20 00:42:36,684 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:42:36,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 00:42:36,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 00:42:36,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-10-20 00:42:36,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:42:36,757 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:42:36,757 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:36,759 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 00:42:36,808 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:36,808 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 00:42:36,809 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,831 INFO L625 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2020-10-20 00:42:36,832 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2020-10-20 00:42:36,863 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 00:42:36,864 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,879 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:36,886 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 00:42:36,886 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:36,904 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,905 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:45 [2020-10-20 00:42:36,953 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:36,953 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2020-10-20 00:42:36,954 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:36,977 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:36,978 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_34|], 2=[|v_#memory_$Pointer$.offset_20|, |v_#memory_$Pointer$.base_26|]} [2020-10-20 00:42:36,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 00:42:36,983 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:42:37,012 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-10-20 00:42:37,012 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,036 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,065 INFO L350 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2020-10-20 00:42:37,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2020-10-20 00:42:37,067 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,094 INFO L625 ElimStorePlain]: treesize reduction 10, result has 80.4 percent of original size [2020-10-20 00:42:37,094 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,094 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:94, output treesize:41 [2020-10-20 00:42:37,147 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 118 [2020-10-20 00:42:37,148 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,170 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:42:37,175 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 23 [2020-10-20 00:42:37,175 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,209 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,210 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 125 [2020-10-20 00:42:37,212 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-10-20 00:42:37,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-20 00:42:37,213 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,248 INFO L625 ElimStorePlain]: treesize reduction 34, result has 75.9 percent of original size [2020-10-20 00:42:37,250 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,250 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:176, output treesize:122 [2020-10-20 00:42:37,316 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_36|], 6=[|v_#memory_$Pointer$.offset_22|, |v_#memory_$Pointer$.base_28|]} [2020-10-20 00:42:37,321 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 48 [2020-10-20 00:42:37,321 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,353 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,399 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,399 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 254 treesize of output 294 [2020-10-20 00:42:37,416 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-10-20 00:42:37,417 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,418 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-20 00:42:37,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-20 00:42:37,425 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-10-20 00:42:37,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-20 00:42:37,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-10-20 00:42:37,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-10-20 00:42:37,430 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 7 xjuncts. [2020-10-20 00:42:37,545 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-20 00:42:37,546 INFO L625 ElimStorePlain]: treesize reduction 2108, result has 8.5 percent of original size [2020-10-20 00:42:37,586 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,587 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 197 [2020-10-20 00:42:37,590 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,591 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,593 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,596 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,599 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-10-20 00:42:37,601 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,602 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,606 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,610 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,611 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,614 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,619 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,620 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,621 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,624 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,628 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,628 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,632 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,634 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,637 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,638 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,642 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,647 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,648 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,650 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,652 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,656 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-10-20 00:42:37,658 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,659 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,662 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,663 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,664 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,667 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,668 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,669 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,672 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,686 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,687 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,692 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,696 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,697 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,701 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,706 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,707 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-10-20 00:42:37,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-10-20 00:42:37,710 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-20 00:42:37,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 00:42:37,714 INFO L545 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:37,756 INFO L625 ElimStorePlain]: treesize reduction 108, result has 40.0 percent of original size [2020-10-20 00:42:37,757 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:37,757 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:286, output treesize:126 [2020-10-20 00:42:37,829 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,829 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 76 [2020-10-20 00:42:37,832 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-10-20 00:42:37,835 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-10-20 00:42:37,837 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:37,868 INFO L625 ElimStorePlain]: treesize reduction 22, result has 72.2 percent of original size [2020-10-20 00:42:37,873 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 19 [2020-10-20 00:42:37,874 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,887 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 00:42:37,888 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:144, output treesize:19 [2020-10-20 00:42:37,943 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 00:42:37,944 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:42:37,949 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:42:37,949 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2020-10-20 00:42:37,960 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 00:42:37,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:42:37,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2020-10-20 00:42:37,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943377502] [2020-10-20 00:42:37,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 00:42:37,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:42:37,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 00:42:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-20 00:42:37,964 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 20 states. [2020-10-20 00:42:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:42:38,877 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-20 00:42:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 00:42:38,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2020-10-20 00:42:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:42:38,880 INFO L225 Difference]: With dead ends: 94 [2020-10-20 00:42:38,880 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 00:42:38,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-20 00:42:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 00:42:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-10-20 00:42:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 00:42:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-20 00:42:38,892 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 28 [2020-10-20 00:42:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:42:38,893 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-20 00:42:38,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 00:42:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-20 00:42:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 00:42:38,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:42:38,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:42:39,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 00:42:39,108 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:42:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:42:39,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1393955211, now seen corresponding path program 1 times [2020-10-20 00:42:39,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:42:39,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763609460] [2020-10-20 00:42:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:42:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:42:39,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:42:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:42:39,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:42:39,166 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:42:39,166 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:42:39,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 00:42:39,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:42:39 BoogieIcfgContainer [2020-10-20 00:42:39,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:42:39,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:42:39,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:42:39,216 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:42:39,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:42:26" (3/4) ... [2020-10-20 00:42:39,219 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:42:39,278 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:42:39,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:42:39,280 INFO L168 Benchmark]: Toolchain (without parser) took 13512.90 ms. Allocated memory was 41.9 MB in the beginning and 93.3 MB in the end (delta: 51.4 MB). Free memory was 18.3 MB in the beginning and 71.2 MB in the end (delta: -52.8 MB). Peak memory consumption was 61.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,280 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.7 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.63 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 17.6 MB in the beginning and 21.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.88 ms. Allocated memory is still 45.1 MB. Free memory was 21.4 MB in the beginning and 19.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,281 INFO L168 Benchmark]: Boogie Preprocessor took 60.59 ms. Allocated memory is still 45.1 MB. Free memory was 19.4 MB in the beginning and 17.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,282 INFO L168 Benchmark]: RCFGBuilder took 419.66 ms. Allocated memory is still 45.1 MB. Free memory was 17.5 MB in the beginning and 14.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,282 INFO L168 Benchmark]: TraceAbstraction took 12359.10 ms. Allocated memory was 45.1 MB in the beginning and 91.8 MB in the end (delta: 46.7 MB). Free memory was 13.6 MB in the beginning and 8.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 52.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,283 INFO L168 Benchmark]: Witness Printer took 62.77 ms. Allocated memory was 91.8 MB in the beginning and 93.3 MB in the end (delta: 1.6 MB). Free memory was 8.0 MB in the beginning and 71.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:42:39,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.7 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 513.63 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 17.6 MB in the beginning and 21.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 85.88 ms. Allocated memory is still 45.1 MB. Free memory was 21.4 MB in the beginning and 19.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 60.59 ms. Allocated memory is still 45.1 MB. Free memory was 19.4 MB in the beginning and 17.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 419.66 ms. Allocated memory is still 45.1 MB. Free memory was 17.5 MB in the beginning and 14.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12359.10 ms. Allocated memory was 45.1 MB in the beginning and 91.8 MB in the end (delta: 46.7 MB). Free memory was 13.6 MB in the beginning and 8.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 52.3 MB. Max. memory is 14.3 GB. * Witness Printer took 62.77 ms. Allocated memory was 91.8 MB in the beginning and 93.3 MB in the end (delta: 1.6 MB). Free memory was 8.0 MB in the beginning and 71.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.1s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 261 SDtfs, 634 SDslu, 1330 SDs, 0 SdLazy, 1900 SolverSat, 240 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 173 SyntacticMatches, 8 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 175 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 500 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 452 ConstructedInterpolants, 17 QuantifiedInterpolants, 130191 SizeOfPredicates, 104 NumberOfNonLiveVariables, 886 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 16/92 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 incorrect! Received shutdown request...