./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/sqrt1.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/nla-digbench/sqrt1.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 437161df08265e796d7ea8b5853882d845f4b1fb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:13:34,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:13:34,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:13:34,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:13:34,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:13:34,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:13:34,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:13:34,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:13:34,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:13:34,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:13:34,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:13:34,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:13:34,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:13:34,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:13:34,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:13:34,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:13:34,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:13:34,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:13:34,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:13:34,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:13:34,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:13:34,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:13:34,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:13:34,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:13:34,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:13:34,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:13:34,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:13:34,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:13:34,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:13:34,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:13:34,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:13:34,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:13:34,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:13:34,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:13:34,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:13:34,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:13:34,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:13:34,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:13:34,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:13:34,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:13:34,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:13:34,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:13:34,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:13:34,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:13:34,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:13:34,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:13:34,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:13:34,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:13:34,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:13:34,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:13:34,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:13:34,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:13:34,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:13:34,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:13:34,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:13:34,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:13:34,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:13:34,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:13:34,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:13:34,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:13:34,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:13:34,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:13:34,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:13:34,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:13:34,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:13:34,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:13:34,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:13:34,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:13:34,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:13:34,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:13:34,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:13:34,524 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 -> 437161df08265e796d7ea8b5853882d845f4b1fb [2020-10-20 01:13:34,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:13:34,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:13:34,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:13:34,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:13:34,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:13:34,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/sqrt1.c [2020-10-20 01:13:34,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485f1d860/61f22d0699634a7d87db98af8eedadd4/FLAG50b5c414b [2020-10-20 01:13:35,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:13:35,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/sqrt1.c [2020-10-20 01:13:35,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485f1d860/61f22d0699634a7d87db98af8eedadd4/FLAG50b5c414b [2020-10-20 01:13:35,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/485f1d860/61f22d0699634a7d87db98af8eedadd4 [2020-10-20 01:13:35,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:13:35,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:13:35,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:13:35,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:13:35,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:13:35,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:13:35" (1/1) ... [2020-10-20 01:13:35,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271a4355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:35, skipping insertion in model container [2020-10-20 01:13:35,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:13:35" (1/1) ... [2020-10-20 01:13:35,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:13:35,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:13:36,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:13:36,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:13:36,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:13:36,138 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:13:36,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36 WrapperNode [2020-10-20 01:13:36,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:13:36,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:13:36,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:13:36,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:13:36,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:13:36,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:13:36,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:13:36,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:13:36,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... [2020-10-20 01:13:36,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:13:36,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:13:36,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:13:36,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:13:36,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:13:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:13:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:13:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:13:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:13:36,542 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:13:36,542 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-10-20 01:13:36,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:13:36 BoogieIcfgContainer [2020-10-20 01:13:36,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:13:36,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:13:36,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:13:36,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:13:36,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:13:35" (1/3) ... [2020-10-20 01:13:36,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead68fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:13:36, skipping insertion in model container [2020-10-20 01:13:36,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:13:36" (2/3) ... [2020-10-20 01:13:36,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead68fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:13:36, skipping insertion in model container [2020-10-20 01:13:36,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:13:36" (3/3) ... [2020-10-20 01:13:36,557 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2020-10-20 01:13:36,570 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:13:36,578 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 01:13:36,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 01:13:36,638 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:13:36,638 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:13:36,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:13:36,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:13:36,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:13:36,639 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:13:36,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:13:36,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:13:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-20 01:13:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 01:13:36,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:36,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 01:13:36,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:36,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-10-20 01:13:36,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:36,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980727910] [2020-10-20 01:13:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:13:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:36,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980727910] [2020-10-20 01:13:36,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:13:36,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:13:36,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294013340] [2020-10-20 01:13:36,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:13:36,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:36,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:13:36,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:13:36,940 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-20 01:13:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:37,092 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-10-20 01:13:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:13:37,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-20 01:13:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:37,105 INFO L225 Difference]: With dead ends: 85 [2020-10-20 01:13:37,106 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 01:13:37,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:13:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 01:13:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2020-10-20 01:13:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 01:13:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-20 01:13:37,157 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 5 [2020-10-20 01:13:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:37,158 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-20 01:13:37,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:13:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-20 01:13:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 01:13:37,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:37,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:13:37,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:13:37,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1810846125, now seen corresponding path program 1 times [2020-10-20 01:13:37,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:37,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341022816] [2020-10-20 01:13:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:37,176 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:37,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324657347] [2020-10-20 01:13:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:13:37,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 01:13:37,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:37,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341022816] [2020-10-20 01:13:37,297 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:37,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324657347] [2020-10-20 01:13:37,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:13:37,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:13:37,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637382017] [2020-10-20 01:13:37,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:13:37,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:37,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:13:37,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:13:37,301 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2020-10-20 01:13:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:37,400 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-10-20 01:13:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:13:37,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 01:13:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:37,402 INFO L225 Difference]: With dead ends: 48 [2020-10-20 01:13:37,402 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 01:13:37,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:13:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 01:13:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-20 01:13:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 01:13:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-20 01:13:37,413 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 7 [2020-10-20 01:13:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:37,413 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-20 01:13:37,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:13:37,414 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-20 01:13:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 01:13:37,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:37,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:13:37,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:13:37,630 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:37,632 INFO L82 PathProgramCache]: Analyzing trace with hash 761557936, now seen corresponding path program 1 times [2020-10-20 01:13:37,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:37,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618216502] [2020-10-20 01:13:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:37,645 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:37,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369428379] [2020-10-20 01:13:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:13:37,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 01:13:37,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:37,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618216502] [2020-10-20 01:13:37,722 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:37,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369428379] [2020-10-20 01:13:37,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:13:37,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:13:37,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929625732] [2020-10-20 01:13:37,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:13:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:13:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:13:37,724 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2020-10-20 01:13:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:37,806 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-20 01:13:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:13:37,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 01:13:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:37,817 INFO L225 Difference]: With dead ends: 45 [2020-10-20 01:13:37,818 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 01:13:37,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:13:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 01:13:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-20 01:13:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 01:13:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-10-20 01:13:37,828 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 9 [2020-10-20 01:13:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:37,828 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-10-20 01:13:37,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:13:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-10-20 01:13:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:13:37,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:37,830 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:13:38,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:38,044 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1561093752, now seen corresponding path program 1 times [2020-10-20 01:13:38,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:38,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582637371] [2020-10-20 01:13:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:38,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:38,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867477615] [2020-10-20 01:13:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:13:38,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 01:13:38,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:38,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582637371] [2020-10-20 01:13:38,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:38,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867477615] [2020-10-20 01:13:38,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:13:38,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-20 01:13:38,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007442868] [2020-10-20 01:13:38,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:13:38,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:38,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:13:38,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:13:38,144 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 5 states. [2020-10-20 01:13:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:38,261 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-20 01:13:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:13:38,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 01:13:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:38,262 INFO L225 Difference]: With dead ends: 59 [2020-10-20 01:13:38,263 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 01:13:38,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:13:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 01:13:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2020-10-20 01:13:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 01:13:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-20 01:13:38,271 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 12 [2020-10-20 01:13:38,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:38,272 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-20 01:13:38,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:13:38,272 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-20 01:13:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 01:13:38,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:38,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:13:38,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:38,487 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:38,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1267695675, now seen corresponding path program 1 times [2020-10-20 01:13:38,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:38,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390049087] [2020-10-20 01:13:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:38,500 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:38,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559499903] [2020-10-20 01:13:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:13:38,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 01:13:38,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:38,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390049087] [2020-10-20 01:13:38,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:38,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559499903] [2020-10-20 01:13:38,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:13:38,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-20 01:13:38,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664912816] [2020-10-20 01:13:38,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:13:38,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:38,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:13:38,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:13:38,590 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-10-20 01:13:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:38,689 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-20 01:13:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:13:38,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 01:13:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:38,691 INFO L225 Difference]: With dead ends: 55 [2020-10-20 01:13:38,691 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 01:13:38,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:13:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 01:13:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-20 01:13:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 01:13:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-20 01:13:38,699 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 14 [2020-10-20 01:13:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:38,700 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-20 01:13:38,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:13:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-20 01:13:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:13:38,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:38,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 01:13:38,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:38,915 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1514981698, now seen corresponding path program 1 times [2020-10-20 01:13:38,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:38,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256856453] [2020-10-20 01:13:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:38,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:38,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636915340] [2020-10-20 01:13:38,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:13:38,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 01:13:38,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:39,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256856453] [2020-10-20 01:13:39,031 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:39,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636915340] [2020-10-20 01:13:39,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:13:39,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-20 01:13:39,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184269194] [2020-10-20 01:13:39,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:13:39,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:39,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:13:39,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:13:39,033 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-10-20 01:13:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:39,158 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-10-20 01:13:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:13:39,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 01:13:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:39,160 INFO L225 Difference]: With dead ends: 52 [2020-10-20 01:13:39,160 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 01:13:39,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:13:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 01:13:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-20 01:13:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 01:13:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-20 01:13:39,167 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 16 [2020-10-20 01:13:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:39,168 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-20 01:13:39,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:13:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-20 01:13:39,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 01:13:39,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:39,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-20 01:13:39,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 01:13:39,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:39,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:39,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1297538902, now seen corresponding path program 2 times [2020-10-20 01:13:39,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:39,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344339061] [2020-10-20 01:13:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:39,393 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:39,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872960936] [2020-10-20 01:13:39,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:39,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:13:39,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:13:39,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 01:13:39,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:39,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344339061] [2020-10-20 01:13:39,491 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:39,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872960936] [2020-10-20 01:13:39,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:13:39,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-20 01:13:39,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980134583] [2020-10-20 01:13:39,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:13:39,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:39,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:13:39,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:13:39,494 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 6 states. [2020-10-20 01:13:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:39,626 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-10-20 01:13:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:13:39,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-20 01:13:39,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:39,628 INFO L225 Difference]: With dead ends: 66 [2020-10-20 01:13:39,628 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 01:13:39,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:13:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 01:13:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-10-20 01:13:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 01:13:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-20 01:13:39,636 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 19 [2020-10-20 01:13:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:39,636 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-20 01:13:39,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:13:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-20 01:13:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 01:13:39,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:39,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-20 01:13:39,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:39,850 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:39,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1394182675, now seen corresponding path program 2 times [2020-10-20 01:13:39,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:39,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076865652] [2020-10-20 01:13:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:39,861 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:39,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052074783] [2020-10-20 01:13:39,862 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:39,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:13:39,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:13:39,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 01:13:39,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:13:39,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076865652] [2020-10-20 01:13:39,975 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:39,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052074783] [2020-10-20 01:13:39,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:13:39,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-20 01:13:39,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234081065] [2020-10-20 01:13:39,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:13:39,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:39,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:13:39,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:13:39,977 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-10-20 01:13:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:13:40,133 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-10-20 01:13:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:13:40,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-20 01:13:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:13:40,134 INFO L225 Difference]: With dead ends: 62 [2020-10-20 01:13:40,134 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 01:13:40,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:13:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 01:13:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-20 01:13:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 01:13:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-20 01:13:40,148 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 21 [2020-10-20 01:13:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:13:40,148 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-20 01:13:40,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:13:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-20 01:13:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:13:40,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:13:40,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-20 01:13:40,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:40,365 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:13:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:13:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash 220432368, now seen corresponding path program 2 times [2020-10-20 01:13:40,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:13:40,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986697825] [2020-10-20 01:13:40,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:13:40,377 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:13:40,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361140137] [2020-10-20 01:13:40,378 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:13:40,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 01:13:40,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:13:40,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 01:13:40,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:13:40,471 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 01:13:40,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:13:40,537 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 01:13:40,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:13:42,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:13:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 01:13:48,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986697825] [2020-10-20 01:13:48,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:13:48,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361140137] [2020-10-20 01:13:48,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:13:48,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 01:13:48,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945172673] [2020-10-20 01:13:48,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:13:48,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:13:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:13:48,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:13:48,790 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 7 states. [2020-10-20 01:13:55,580 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-10-20 01:14:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:14:03,866 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-20 01:14:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:14:03,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-20 01:14:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:14:03,870 INFO L225 Difference]: With dead ends: 52 [2020-10-20 01:14:03,870 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 01:14:03,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:14:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 01:14:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 01:14:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 01:14:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-20 01:14:03,886 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 23 [2020-10-20 01:14:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:14:03,888 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-20 01:14:03,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:14:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-20 01:14:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:14:03,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:14:03,890 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-10-20 01:14:04,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-20 01:14:04,104 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:14:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:14:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash -98440648, now seen corresponding path program 3 times [2020-10-20 01:14:04,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:14:04,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522001751] [2020-10-20 01:14:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:14:04,129 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:14:04,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892229915] [2020-10-20 01:14:04,131 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 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 [2020-10-20 01:14:04,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 01:14:04,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:14:04,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 01:14:04,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:14:04,236 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 01:14:04,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:14:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 01:14:04,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522001751] [2020-10-20 01:14:04,306 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:14:04,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892229915] [2020-10-20 01:14:04,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 01:14:04,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-20 01:14:04,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809793182] [2020-10-20 01:14:04,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:14:04,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:14:04,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:14:04,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:14:04,308 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-10-20 01:14:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:14:04,514 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-10-20 01:14:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:14:04,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:14:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:14:04,517 INFO L225 Difference]: With dead ends: 50 [2020-10-20 01:14:04,517 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 01:14:04,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:14:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 01:14:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-20 01:14:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 01:14:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-20 01:14:04,525 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 26 [2020-10-20 01:14:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:14:04,526 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-20 01:14:04,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:14:04,526 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-20 01:14:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 01:14:04,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:14:04,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-10-20 01:14:04,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:14:04,741 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:14:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:14:04,743 INFO L82 PathProgramCache]: Analyzing trace with hash -111995909, now seen corresponding path program 3 times [2020-10-20 01:14:04,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:14:04,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968908464] [2020-10-20 01:14:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:14:04,752 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 01:14:04,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680479283] [2020-10-20 01:14:04,753 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 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 [2020-10-20 01:14:04,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 01:14:04,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:14:04,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 01:14:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:14:04,857 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 01:14:04,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:14:04,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:14:05,061 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-20 01:14:05,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 01:14:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-20 01:14:05,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968908464] [2020-10-20 01:14:05,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 01:14:05,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680479283] [2020-10-20 01:14:05,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:14:05,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 01:14:05,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849503865] [2020-10-20 01:14:05,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:14:05,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:14:05,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:14:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:14:05,175 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 7 states. [2020-10-20 01:14:12,798 WARN L193 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-20 01:14:17,652 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-10-20 01:14:23,982 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-20 01:14:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:14:24,145 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-20 01:14:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:14:24,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-20 01:14:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:14:24,147 INFO L225 Difference]: With dead ends: 46 [2020-10-20 01:14:24,148 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:14:24,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:14:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:14:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:14:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:14:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:14:24,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-20 01:14:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:14:24,150 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:14:24,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:14:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:14:24,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:14:24,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:14:24,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:14:24,740 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-10-20 01:14:35,427 WARN L193 SmtUtils]: Spent 10.69 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-20 01:14:44,567 WARN L193 SmtUtils]: Spent 9.14 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-10-20 01:14:53,003 WARN L193 SmtUtils]: Spent 8.43 s on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-10-20 01:15:03,464 WARN L193 SmtUtils]: Spent 10.46 s on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-10-20 01:15:17,775 WARN L193 SmtUtils]: Spent 14.31 s on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-10-20 01:15:17,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:15:17,779 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:15:17,780 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:15:17,780 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:15:17,780 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:15:17,780 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:15:17,780 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 40) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-10-20 01:15:17,780 INFO L274 CegarLoopResult]: For program point L28-3(lines 28 40) no Hoare annotation was computed. [2020-10-20 01:15:17,780 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:15:17,781 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-10-20 01:15:17,781 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-10-20 01:15:17,781 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-10-20 01:15:17,782 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse1 2) (* .cse1 .cse1) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-10-20 01:15:17,782 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-10-20 01:15:17,782 INFO L270 CegarLoopResult]: At program point L12-5(lines 34 35) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-10-20 01:15:17,782 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-10-20 01:15:17,783 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-10-20 01:15:17,783 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-10-20 01:15:17,783 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))))) [2020-10-20 01:15:17,783 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-10-20 01:15:17,783 INFO L270 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-10-20 01:15:17,784 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:15:17,784 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:15:17,784 INFO L270 CegarLoopResult]: At program point L46(lines 20 47) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-10-20 01:15:17,784 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-10-20 01:15:17,784 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-10-20 01:15:17,785 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-10-20 01:15:17,785 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-10-20 01:15:17,785 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-10-20 01:15:17,785 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-10-20 01:15:17,785 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-20 01:15:17,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:15:17 BoogieIcfgContainer [2020-10-20 01:15:17,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:15:17,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:15:17,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:15:17,819 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:15:17,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:13:36" (3/4) ... [2020-10-20 01:15:17,824 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:15:17,833 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 01:15:17,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 01:15:17,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:15:17,834 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:15:17,900 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:15:17,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:15:17,902 INFO L168 Benchmark]: Toolchain (without parser) took 102109.57 ms. Allocated memory was 39.8 MB in the beginning and 59.2 MB in the end (delta: 19.4 MB). Free memory was 14.7 MB in the beginning and 16.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,907 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 39.3 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.89 ms. Allocated memory was 39.8 MB in the beginning and 45.1 MB in the end (delta: 5.2 MB). Free memory was 13.9 MB in the beginning and 28.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 45.1 MB. Free memory was 28.9 MB in the beginning and 27.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,909 INFO L168 Benchmark]: Boogie Preprocessor took 24.79 ms. Allocated memory is still 45.1 MB. Free memory was 27.0 MB in the beginning and 25.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,910 INFO L168 Benchmark]: RCFGBuilder took 342.21 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 25.5 MB in the beginning and 24.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,912 INFO L168 Benchmark]: TraceAbstraction took 101264.76 ms. Allocated memory was 46.7 MB in the beginning and 59.2 MB in the end (delta: 12.6 MB). Free memory was 23.5 MB in the beginning and 19.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,913 INFO L168 Benchmark]: Witness Printer took 83.18 ms. Allocated memory is still 59.2 MB. Free memory was 19.9 MB in the beginning and 16.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:15:17,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 39.3 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 334.89 ms. Allocated memory was 39.8 MB in the beginning and 45.1 MB in the end (delta: 5.2 MB). Free memory was 13.9 MB in the beginning and 28.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.58 ms. Allocated memory is still 45.1 MB. Free memory was 28.9 MB in the beginning and 27.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.79 ms. Allocated memory is still 45.1 MB. Free memory was 27.0 MB in the beginning and 25.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 342.21 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 25.5 MB in the beginning and 24.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 101264.76 ms. Allocated memory was 46.7 MB in the beginning and 59.2 MB in the end (delta: 12.6 MB). Free memory was 23.5 MB in the beginning and 19.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 14.3 GB. * Witness Printer took 83.18 ms. Allocated memory is still 59.2 MB. Free memory was 19.9 MB in the beginning and 16.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((s == 1 && a == 0) && t == 1) || ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t)) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1) && 1 == cond) && a * 2 + 1 == t - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 47.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 35.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 53.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 218 SDslu, 382 SDs, 0 SdLazy, 577 SolverSat, 115 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 35 NumberOfFragments, 305 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2381 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 53.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 180 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 169 ConstructedInterpolants, 1 QuantifiedInterpolants, 18639 SizeOfPredicates, 54 NumberOfNonLiveVariables, 750 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 78/117 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...