./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/gcd_4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c20edfd7ede05443471560aa2c7be34d4e8c171 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:20:16,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:20:16,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:20:16,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:20:16,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:20:16,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:20:16,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:20:16,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:20:16,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:20:16,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:20:16,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:20:16,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:20:16,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:20:16,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:20:16,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:20:16,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:20:16,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:20:16,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:20:16,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:20:16,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:20:16,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:20:16,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:20:16,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:20:16,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:20:16,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:20:16,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:20:16,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:20:16,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:20:16,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:20:16,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:20:16,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:20:16,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:20:16,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:20:16,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:20:16,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:20:16,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:20:16,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:20:16,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:20:16,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:20:16,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:20:16,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:20:16,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:20:16,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:20:16,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:20:16,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:20:16,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:20:16,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:20:16,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:20:16,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:20:16,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:20:16,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:20:16,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:20:16,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:20:16,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:20:16,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:20:16,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:20:16,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:20:16,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:20:16,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:20:16,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:20:16,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:20:16,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:20:16,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:20:16,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:20:16,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:20:16,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:20:16,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:20:16,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:20:16,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:20:16,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:20:16,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:20:16,523 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 -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2020-10-19 22:20:16,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:20:16,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:20:16,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:20:16,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:20:16,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:20:16,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2020-10-19 22:20:16,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2091dac8/3109a4c4026747149456d4f5733943da/FLAG4b61efb90 [2020-10-19 22:20:17,344 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:20:17,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2020-10-19 22:20:17,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2091dac8/3109a4c4026747149456d4f5733943da/FLAG4b61efb90 [2020-10-19 22:20:17,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2091dac8/3109a4c4026747149456d4f5733943da [2020-10-19 22:20:17,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:20:17,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:20:17,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:20:17,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:20:17,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:20:17,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:20:17" (1/1) ... [2020-10-19 22:20:17,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fda1dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:17, skipping insertion in model container [2020-10-19 22:20:17,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:20:17" (1/1) ... [2020-10-19 22:20:17,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:20:17,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:20:17,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:20:17,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:20:17,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:20:18,007 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:20:18,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18 WrapperNode [2020-10-19 22:20:18,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:20:18,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:20:18,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:20:18,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:20:18,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:20:18,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:20:18,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:20:18,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:20:18,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... [2020-10-19 22:20:18,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:20:18,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:20:18,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:20:18,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:20:18,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:20:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:20:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:20:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:20:18,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:20:18,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:20:18,404 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-19 22:20:18,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:20:18 BoogieIcfgContainer [2020-10-19 22:20:18,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:20:18,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:20:18,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:20:18,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:20:18,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:20:17" (1/3) ... [2020-10-19 22:20:18,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebc538f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:20:18, skipping insertion in model container [2020-10-19 22:20:18,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:20:18" (2/3) ... [2020-10-19 22:20:18,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebc538f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:20:18, skipping insertion in model container [2020-10-19 22:20:18,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:20:18" (3/3) ... [2020-10-19 22:20:18,416 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2020-10-19 22:20:18,430 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:20:18,438 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-19 22:20:18,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-19 22:20:18,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:20:18,496 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:20:18,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:20:18,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:20:18,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:20:18,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:20:18,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:20:18,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:20:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-19 22:20:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 22:20:18,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:18,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:18,528 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:18,535 INFO L82 PathProgramCache]: Analyzing trace with hash 121403650, now seen corresponding path program 1 times [2020-10-19 22:20:18,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:18,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005362679] [2020-10-19 22:20:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:18,672 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:18,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42951478] [2020-10-19 22:20:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:20:18,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:20:18,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:18,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005362679] [2020-10-19 22:20:18,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:18,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42951478] [2020-10-19 22:20:18,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:20:18,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:20:18,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272658837] [2020-10-19 22:20:18,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:20:18,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:20:18,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:20:18,882 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-19 22:20:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:18,966 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-19 22:20:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:20:18,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-19 22:20:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:18,983 INFO L225 Difference]: With dead ends: 67 [2020-10-19 22:20:18,983 INFO L226 Difference]: Without dead ends: 35 [2020-10-19 22:20:18,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:20:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-19 22:20:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2020-10-19 22:20:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 22:20:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-19 22:20:19,042 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2020-10-19 22:20:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:19,043 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-19 22:20:19,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:20:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-19 22:20:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:20:19,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:19,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:19,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-19 22:20:19,247 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:19,248 INFO L82 PathProgramCache]: Analyzing trace with hash -60379342, now seen corresponding path program 1 times [2020-10-19 22:20:19,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:19,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422567268] [2020-10-19 22:20:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:20:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:19,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422567268] [2020-10-19 22:20:19,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:20:19,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:20:19,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728108367] [2020-10-19 22:20:19,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:20:19,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:20:19,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:20:19,327 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2020-10-19 22:20:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:19,347 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-19 22:20:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:20:19,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 22:20:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:19,349 INFO L225 Difference]: With dead ends: 38 [2020-10-19 22:20:19,349 INFO L226 Difference]: Without dead ends: 22 [2020-10-19 22:20:19,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:20:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-19 22:20:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-19 22:20:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 22:20:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-19 22:20:19,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2020-10-19 22:20:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:19,357 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-19 22:20:19,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:20:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-19 22:20:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 22:20:19,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:19,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:19,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:20:19,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:19,360 INFO L82 PathProgramCache]: Analyzing trace with hash 108865487, now seen corresponding path program 1 times [2020-10-19 22:20:19,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:19,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440113273] [2020-10-19 22:20:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:19,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:19,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748911739] [2020-10-19 22:20:19,376 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 [2020-10-19 22:20:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:20:19,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:20:19,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:19,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440113273] [2020-10-19 22:20:19,501 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:19,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748911739] [2020-10-19 22:20:19,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:19,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-19 22:20:19,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60672362] [2020-10-19 22:20:19,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:20:19,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:19,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:20:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:20:19,505 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2020-10-19 22:20:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:19,566 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-19 22:20:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:20:19,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 22:20:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:19,569 INFO L225 Difference]: With dead ends: 39 [2020-10-19 22:20:19,569 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 22:20:19,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:20:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 22:20:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-19 22:20:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 22:20:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-19 22:20:19,577 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2020-10-19 22:20:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:19,578 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-19 22:20:19,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:20:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-19 22:20:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:20:19,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:19,581 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:19,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:19,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash -326322836, now seen corresponding path program 1 times [2020-10-19 22:20:19,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:19,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241730569] [2020-10-19 22:20:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:19,800 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:19,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047642793] [2020-10-19 22:20:19,800 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 [2020-10-19 22:20:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:20:19,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:20:19,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:19,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241730569] [2020-10-19 22:20:19,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:19,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047642793] [2020-10-19 22:20:19,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:19,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-19 22:20:19,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341989606] [2020-10-19 22:20:19,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:20:19,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:19,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:20:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:20:19,943 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-19 22:20:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:20,004 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-19 22:20:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:20:20,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 22:20:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:20,006 INFO L225 Difference]: With dead ends: 41 [2020-10-19 22:20:20,006 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 22:20:20,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:20:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 22:20:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-19 22:20:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 22:20:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-19 22:20:20,013 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2020-10-19 22:20:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:20,014 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-19 22:20:20,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:20:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-19 22:20:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:20:20,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:20,015 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:20,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:20,230 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1930473527, now seen corresponding path program 2 times [2020-10-19 22:20:20,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:20,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013092855] [2020-10-19 22:20:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:20,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:20,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266744241] [2020-10-19 22:20:20,249 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:20,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:20:20,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:20:20,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 22:20:20,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:20,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013092855] [2020-10-19 22:20:20,398 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:20,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266744241] [2020-10-19 22:20:20,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:20,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-19 22:20:20,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117543491] [2020-10-19 22:20:20,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:20:20,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:20,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:20:20,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:20:20,401 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-10-19 22:20:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:20,479 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-19 22:20:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:20:20,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-19 22:20:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:20,486 INFO L225 Difference]: With dead ends: 43 [2020-10-19 22:20:20,486 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 22:20:20,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:20:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 22:20:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-19 22:20:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 22:20:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-19 22:20:20,492 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 16 [2020-10-19 22:20:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:20,492 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-19 22:20:20,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:20:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-19 22:20:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:20:20,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:20,493 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:20,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:20,697 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1626028314, now seen corresponding path program 3 times [2020-10-19 22:20:20,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:20,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712226170] [2020-10-19 22:20:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:20,728 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:20,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677442384] [2020-10-19 22:20:20,728 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:20,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-19 22:20:20,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:20:20,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:20:20,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:20,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712226170] [2020-10-19 22:20:20,941 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:20,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677442384] [2020-10-19 22:20:20,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:20,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-19 22:20:20,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67669656] [2020-10-19 22:20:20,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:20:20,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:20,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:20:20,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:20:20,946 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2020-10-19 22:20:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:21,010 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-19 22:20:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:20:21,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-19 22:20:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:21,012 INFO L225 Difference]: With dead ends: 47 [2020-10-19 22:20:21,012 INFO L226 Difference]: Without dead ends: 30 [2020-10-19 22:20:21,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:20:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-19 22:20:21,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-19 22:20:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 22:20:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-19 22:20:21,021 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 18 [2020-10-19 22:20:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:21,021 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-19 22:20:21,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:20:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-19 22:20:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 22:20:21,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:21,023 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:21,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-19 22:20:21,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:21,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1921301375, now seen corresponding path program 4 times [2020-10-19 22:20:21,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:21,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034212104] [2020-10-19 22:20:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:21,252 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:21,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489056636] [2020-10-19 22:20:21,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-19 22:20:21,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 22:20:21,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:20:21,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-19 22:20:21,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034212104] [2020-10-19 22:20:21,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489056636] [2020-10-19 22:20:21,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:21,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-19 22:20:21,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095731745] [2020-10-19 22:20:21,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 22:20:21,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 22:20:21,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:20:21,461 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2020-10-19 22:20:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:21,731 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-19 22:20:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:20:21,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-19 22:20:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:21,734 INFO L225 Difference]: With dead ends: 47 [2020-10-19 22:20:21,735 INFO L226 Difference]: Without dead ends: 45 [2020-10-19 22:20:21,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:20:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-19 22:20:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-19 22:20:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 22:20:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-19 22:20:21,743 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2020-10-19 22:20:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:21,743 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-19 22:20:21,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 22:20:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-19 22:20:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:20:21,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:21,745 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:21,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:21,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:21,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:21,961 INFO L82 PathProgramCache]: Analyzing trace with hash 465533924, now seen corresponding path program 1 times [2020-10-19 22:20:21,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:21,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351531624] [2020-10-19 22:20:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:21,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:21,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243347236] [2020-10-19 22:20:21,977 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 [2020-10-19 22:20:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:20:22,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-19 22:20:22,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 22:20:22,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351531624] [2020-10-19 22:20:22,128 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:22,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243347236] [2020-10-19 22:20:22,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:22,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-19 22:20:22,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952482539] [2020-10-19 22:20:22,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:20:22,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:22,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:20:22,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:20:22,131 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2020-10-19 22:20:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:22,319 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-19 22:20:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:20:22,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-19 22:20:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:22,321 INFO L225 Difference]: With dead ends: 51 [2020-10-19 22:20:22,321 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 22:20:22,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:20:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 22:20:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-19 22:20:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 22:20:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-19 22:20:22,328 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 22 [2020-10-19 22:20:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:22,328 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-19 22:20:22,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:20:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-19 22:20:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:20:22,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:22,330 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:22,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:22,543 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2084095836, now seen corresponding path program 5 times [2020-10-19 22:20:22,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:22,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939365594] [2020-10-19 22:20:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:22,558 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:22,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960480772] [2020-10-19 22:20:22,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-19 22:20:22,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-19 22:20:22,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:20:22,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 22:20:22,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:22,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939365594] [2020-10-19 22:20:22,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:22,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960480772] [2020-10-19 22:20:22,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:22,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-19 22:20:22,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193015746] [2020-10-19 22:20:22,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:20:22,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:22,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:20:22,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:20:22,782 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-10-19 22:20:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:22,949 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-19 22:20:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:20:22,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-19 22:20:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:22,950 INFO L225 Difference]: With dead ends: 54 [2020-10-19 22:20:22,951 INFO L226 Difference]: Without dead ends: 34 [2020-10-19 22:20:22,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:20:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-19 22:20:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-19 22:20:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-19 22:20:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-19 22:20:22,956 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 22 [2020-10-19 22:20:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:22,957 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-19 22:20:22,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:20:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-19 22:20:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:20:22,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:22,958 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:23,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-19 22:20:23,161 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2026837534, now seen corresponding path program 6 times [2020-10-19 22:20:23,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:23,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717017918] [2020-10-19 22:20:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:23,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:23,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682328774] [2020-10-19 22:20:23,180 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:23,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-19 22:20:23,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:20:23,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:20:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-19 22:20:23,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717017918] [2020-10-19 22:20:23,280 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:23,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682328774] [2020-10-19 22:20:23,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:20:23,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:20:23,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136458982] [2020-10-19 22:20:23,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:20:23,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:23,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:20:23,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:20:23,282 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 3 states. [2020-10-19 22:20:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:23,294 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2020-10-19 22:20:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:20:23,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-19 22:20:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:23,295 INFO L225 Difference]: With dead ends: 48 [2020-10-19 22:20:23,296 INFO L226 Difference]: Without dead ends: 35 [2020-10-19 22:20:23,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:20:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-19 22:20:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-19 22:20:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 22:20:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-19 22:20:23,302 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2020-10-19 22:20:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:23,302 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-19 22:20:23,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:20:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-19 22:20:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:20:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:23,304 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:23,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:23,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:23,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1401524834, now seen corresponding path program 7 times [2020-10-19 22:20:23,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:23,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965812138] [2020-10-19 22:20:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:23,528 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:23,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255534237] [2020-10-19 22:20:23,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:20:23,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:20:23,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 22:20:23,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965812138] [2020-10-19 22:20:23,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:23,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255534237] [2020-10-19 22:20:23,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:23,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-19 22:20:23,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519337822] [2020-10-19 22:20:23,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:20:23,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:23,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:20:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:20:23,645 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 7 states. [2020-10-19 22:20:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:23,710 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-10-19 22:20:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:20:23,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 22:20:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:23,711 INFO L225 Difference]: With dead ends: 49 [2020-10-19 22:20:23,712 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 22:20:23,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:20:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 22:20:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-19 22:20:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 22:20:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-19 22:20:23,717 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2020-10-19 22:20:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:23,718 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-19 22:20:23,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:20:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-19 22:20:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:20:23,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:20:23,719 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:20:23,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:23,930 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:20:23,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:20:23,930 INFO L82 PathProgramCache]: Analyzing trace with hash -505502279, now seen corresponding path program 8 times [2020-10-19 22:20:23,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:20:23,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532419327] [2020-10-19 22:20:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:20:23,940 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:20:23,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788734461] [2020-10-19 22:20:23,941 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:20:23,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 22:20:23,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:20:23,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 22:20:23,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:20:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:20:24,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532419327] [2020-10-19 22:20:24,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-19 22:20:24,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788734461] [2020-10-19 22:20:24,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:20:24,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-19 22:20:24,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036319868] [2020-10-19 22:20:24,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:20:24,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:20:24,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:20:24,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:20:24,192 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 10 states. [2020-10-19 22:20:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:20:24,357 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-19 22:20:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:20:24,358 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-19 22:20:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:20:24,359 INFO L225 Difference]: With dead ends: 33 [2020-10-19 22:20:24,359 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:20:24,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:20:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:20:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:20:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:20:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:20:24,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-19 22:20:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:20:24,362 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:20:24,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:20:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:20:24,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:20:24,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-19 22:20:24,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:20:24,944 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2020-10-19 22:20:24,947 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:20:24,947 INFO L274 CegarLoopResult]: For program point L15-1(lines 13 29) no Hoare annotation was computed. [2020-10-19 22:20:24,947 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-19 22:20:24,948 INFO L270 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) 63) (= ULTIMATE.start_main_~y~0 18) (= (+ ULTIMATE.start_main_~g~0 .cse0) 63) (= (+ .cse0 ULTIMATE.start_gcd_test_~a) 63))) [2020-10-19 22:20:24,948 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-10-19 22:20:24,948 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:20:24,948 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-19 22:20:24,948 INFO L270 CegarLoopResult]: At program point L7-5(lines 6 11) the Hoare annotation is: (let ((.cse0 (* 3 ULTIMATE.start_main_~y~0))) (and (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) 63) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 18) (= (+ ULTIMATE.start_main_~g~0 .cse0) 63) (= (+ .cse0 ULTIMATE.start_gcd_test_~a) 63))) [2020-10-19 22:20:24,948 INFO L274 CegarLoopResult]: For program point L7-6(lines 7 9) no Hoare annotation was computed. [2020-10-19 22:20:24,949 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-19 22:20:24,949 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:20:24,949 INFO L277 CegarLoopResult]: At program point L7-8(lines 6 11) the Hoare annotation is: true [2020-10-19 22:20:24,949 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:20:24,949 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:20:24,949 INFO L270 CegarLoopResult]: At program point L28(lines 12 29) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 3))) (and (= (+ .cse0 ULTIMATE.start_gcd_test_~a) 63) (= (+ |ULTIMATE.start_gcd_test_#res| .cse0) 63) (= ULTIMATE.start_main_~x~0 (+ (* ULTIMATE.start_gcd_test_~b 3) (* ULTIMATE.start_gcd_test_~a 7))) (= ULTIMATE.start_main_~y~0 18) (= ULTIMATE.start_main_~x~0 63))) [2020-10-19 22:20:24,949 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:20:24,949 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-10-19 22:20:24,950 INFO L270 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (let ((.cse7 (<= ULTIMATE.start_gcd_test_~b 18)) (.cse8 (<= 18 ULTIMATE.start_gcd_test_~b)) (.cse3 (= ULTIMATE.start_gcd_test_~b 18)) (.cse0 (= (+ (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_gcd_test_~a) 63)) (.cse5 (* ULTIMATE.start_gcd_test_~b 3)) (.cse4 (= ULTIMATE.start_main_~y~0 18)) (.cse2 (= ULTIMATE.start_main_~x~0 63))) (or (let ((.cse1 (+ (* 3 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse0 (<= .cse1 63) .cse2 (<= 63 .cse1) .cse3)) (and .cse0 .cse4 .cse2 (= ULTIMATE.start_main_~x~0 (+ .cse5 (* ULTIMATE.start_gcd_test_~a 4)))) (let ((.cse6 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_gcd_test_~a))) (and (= ULTIMATE.start_main_~x~0 .cse6) .cse7 .cse8 .cse4 (= .cse6 63))) (and .cse7 .cse8 .cse4 (= ULTIMATE.start_gcd_test_~a ULTIMATE.start_main_~x~0) (= ULTIMATE.start_gcd_test_~a 63)) (let ((.cse9 (+ (* 2 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and .cse4 (<= 63 .cse9) (<= .cse9 63) .cse2 .cse3)) (and .cse0 (= ULTIMATE.start_main_~x~0 (+ .cse5 (* ULTIMATE.start_gcd_test_~a 7))) .cse4 .cse2))) [2020-10-19 22:20:24,951 INFO L277 CegarLoopResult]: At program point L47(lines 32 48) the Hoare annotation is: true [2020-10-19 22:20:24,951 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-19 22:20:24,951 INFO L274 CegarLoopResult]: For program point L14-2(lines 13 29) no Hoare annotation was computed. [2020-10-19 22:20:24,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:20:24 BoogieIcfgContainer [2020-10-19 22:20:24,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:20:24,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:20:24,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:20:24,974 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:20:24,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:20:18" (3/4) ... [2020-10-19 22:20:24,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:20:24,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-19 22:20:24,991 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-19 22:20:24,991 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:20:24,991 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:20:25,022 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y * 3 + a == 63 && \result + y * 3 == 63) && x == b * 3 + a * 7) && y == 18) && x == 63 [2020-10-19 22:20:25,023 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result + 3 * y == 63 && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 [2020-10-19 22:20:25,023 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result + 3 * y == 63 && 1 <= cond) && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 [2020-10-19 22:20:25,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:20:25,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:20:25,061 INFO L168 Benchmark]: Toolchain (without parser) took 7381.19 ms. Allocated memory was 36.2 MB in the beginning and 65.0 MB in the end (delta: 28.8 MB). Free memory was 17.1 MB in the beginning and 24.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,061 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.09 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 16.2 MB in the beginning and 26.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.82 ms. Allocated memory is still 44.6 MB. Free memory was 26.5 MB in the beginning and 24.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,070 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 44.6 MB. Free memory was 24.8 MB in the beginning and 23.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,070 INFO L168 Benchmark]: RCFGBuilder took 328.55 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 23.4 MB in the beginning and 21.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,072 INFO L168 Benchmark]: TraceAbstraction took 6565.67 ms. Allocated memory was 46.7 MB in the beginning and 65.0 MB in the end (delta: 18.4 MB). Free memory was 21.3 MB in the beginning and 28.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,074 INFO L168 Benchmark]: Witness Printer took 85.12 ms. Allocated memory is still 65.0 MB. Free memory was 28.6 MB in the beginning and 24.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:20:25,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 323.09 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 16.2 MB in the beginning and 26.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 39.82 ms. Allocated memory is still 44.6 MB. Free memory was 26.5 MB in the beginning and 24.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 44.6 MB. Free memory was 24.8 MB in the beginning and 23.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 328.55 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 23.4 MB in the beginning and 21.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6565.67 ms. Allocated memory was 46.7 MB in the beginning and 65.0 MB in the end (delta: 18.4 MB). Free memory was 21.3 MB in the beginning and 28.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 14.3 GB. * Witness Printer took 85.12 ms. Allocated memory is still 65.0 MB. Free memory was 28.6 MB in the beginning and 24.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((\result + 3 * y == 63 && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((y * 3 + a == 63 && \result + y * 3 == 63) && x == b * 3 + a * 7) && y == 18) && x == 63 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (((\result + 3 * y == 63 && 1 <= cond) && y == 18) && g + 3 * y == 63) && 3 * y + a == 63 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((y * 3 + a == 63 && 3 * b + a <= 63) && x == 63) && 63 <= 3 * b + a) && b == 18) || (((y * 3 + a == 63 && y == 18) && x == 63) && x == b * 3 + a * 4)) || ((((x == b + a && b <= 18) && 18 <= b) && y == 18) && b + a == 63)) || ((((b <= 18 && 18 <= b) && y == 18) && a == x) && a == 63)) || ((((y == 18 && 63 <= 2 * b + a) && 2 * b + a <= 63) && x == 63) && b == 18)) || (((y * 3 + a == 63 && x == b * 3 + a * 7) && y == 18) && x == 63) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 113 SDslu, 469 SDs, 0 SdLazy, 627 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 19 NumberOfFragments, 220 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 222 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 210 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 198 ConstructedInterpolants, 4 QuantifiedInterpolants, 24785 SizeOfPredicates, 61 NumberOfNonLiveVariables, 851 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 84/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...