./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.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/product-lines/minepump_spec4_product37.cil.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 e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:44:07,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:44:07,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:44:07,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:44:07,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:44:07,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:44:07,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:44:07,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:44:07,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:44:07,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:44:07,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:44:07,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:44:07,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:44:07,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:44:07,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:44:07,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:44:07,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:44:07,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:44:07,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:44:07,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:44:07,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:44:07,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:44:07,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:44:07,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:44:07,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:44:07,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:44:07,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:44:07,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:44:07,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:44:07,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:44:07,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:44:07,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:44:07,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:44:07,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:44:07,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:44:07,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:44:07,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:44:07,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:44:07,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:44:07,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:44:07,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:44:07,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:44:07,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:44:07,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:44:07,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:44:07,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:44:07,531 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:44:07,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:44:07,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:44:07,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:44:07,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:44:07,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:44:07,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:44:07,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:44:07,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:44:07,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:44:07,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:44:07,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:44:07,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:44:07,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:44:07,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:44:07,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:44:07,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:44:07,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:07,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:44:07,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:44:07,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:44:07,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:44:07,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:44:07,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:44:07,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:44:07,537 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 -> e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 [2020-10-20 01:44:07,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:44:07,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:44:07,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:44:07,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:44:07,800 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:44:07,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2020-10-20 01:44:07,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b875abba6/5c4beb771f4547579fac6cff16058616/FLAG8891e97df [2020-10-20 01:44:08,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:44:08,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2020-10-20 01:44:08,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b875abba6/5c4beb771f4547579fac6cff16058616/FLAG8891e97df [2020-10-20 01:44:08,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b875abba6/5c4beb771f4547579fac6cff16058616 [2020-10-20 01:44:08,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:44:08,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:44:08,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:08,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:44:08,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:44:08,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:08" (1/1) ... [2020-10-20 01:44:08,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ab153d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:08, skipping insertion in model container [2020-10-20 01:44:08,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:08" (1/1) ... [2020-10-20 01:44:08,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:44:08,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:44:09,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:09,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:44:09,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:09,439 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:44:09,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09 WrapperNode [2020-10-20 01:44:09,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:09,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:09,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:44:09,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:44:09,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:09,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:44:09,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:44:09,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:44:09,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (1/1) ... [2020-10-20 01:44:09,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:44:09,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:44:09,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:44:09,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:44:09,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (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 01:44:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:44:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:44:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:44:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:44:10,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:44:10,536 INFO L298 CfgBuilder]: Removed 162 assume(true) statements. [2020-10-20 01:44:10,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:10 BoogieIcfgContainer [2020-10-20 01:44:10,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:44:10,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:44:10,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:44:10,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:44:10,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:44:08" (1/3) ... [2020-10-20 01:44:10,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc53888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:10, skipping insertion in model container [2020-10-20 01:44:10,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:09" (2/3) ... [2020-10-20 01:44:10,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc53888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:10, skipping insertion in model container [2020-10-20 01:44:10,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:10" (3/3) ... [2020-10-20 01:44:10,547 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-10-20 01:44:10,558 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:44:10,566 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:44:10,592 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:44:10,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:44:10,618 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:44:10,618 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:44:10,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:44:10,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:44:10,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:44:10,618 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:44:10,619 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:44:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-20 01:44:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:44:10,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:10,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:10,643 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -450260872, now seen corresponding path program 1 times [2020-10-20 01:44:10,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:10,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697303959] [2020-10-20 01:44:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:10,887 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 01:44:10,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697303959] [2020-10-20 01:44:10,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:10,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:10,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903165150] [2020-10-20 01:44:10,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:44:10,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:44:10,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:10,912 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 2 states. [2020-10-20 01:44:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:10,946 INFO L93 Difference]: Finished difference Result 219 states and 332 transitions. [2020-10-20 01:44:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:44:10,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:44:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:10,961 INFO L225 Difference]: With dead ends: 219 [2020-10-20 01:44:10,961 INFO L226 Difference]: Without dead ends: 107 [2020-10-20 01:44:10,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-20 01:44:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-20 01:44:11,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-20 01:44:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2020-10-20 01:44:11,025 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2020-10-20 01:44:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:11,026 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2020-10-20 01:44:11,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:44:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2020-10-20 01:44:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:44:11,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:11,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:11,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:44:11,028 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:11,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1497017769, now seen corresponding path program 1 times [2020-10-20 01:44:11,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:11,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814590136] [2020-10-20 01:44:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:11,164 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 01:44:11,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814590136] [2020-10-20 01:44:11,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:11,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:11,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105025] [2020-10-20 01:44:11,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:11,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:11,168 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2020-10-20 01:44:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:11,182 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2020-10-20 01:44:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:11,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:44:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:11,184 INFO L225 Difference]: With dead ends: 107 [2020-10-20 01:44:11,184 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 01:44:11,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 01:44:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 01:44:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 01:44:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-10-20 01:44:11,192 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2020-10-20 01:44:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:11,193 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-10-20 01:44:11,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-10-20 01:44:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:44:11,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:11,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:11,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:44:11,195 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:11,196 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2020-10-20 01:44:11,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:11,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132442782] [2020-10-20 01:44:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:11,342 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 01:44:11,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132442782] [2020-10-20 01:44:11,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:11,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:11,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073798620] [2020-10-20 01:44:11,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:11,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:11,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:11,344 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 6 states. [2020-10-20 01:44:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:11,510 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-10-20 01:44:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:11,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-20 01:44:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:11,514 INFO L225 Difference]: With dead ends: 84 [2020-10-20 01:44:11,514 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 01:44:11,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 01:44:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 01:44:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 01:44:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-10-20 01:44:11,528 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2020-10-20 01:44:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:11,528 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-10-20 01:44:11,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-10-20 01:44:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:44:11,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:11,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:11,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:44:11,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2020-10-20 01:44:11,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:11,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801377327] [2020-10-20 01:44:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:11,661 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 01:44:11,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801377327] [2020-10-20 01:44:11,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:11,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:11,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829111124] [2020-10-20 01:44:11,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:11,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:11,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:11,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:11,669 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-10-20 01:44:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:11,702 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2020-10-20 01:44:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:11,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:44:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:11,703 INFO L225 Difference]: With dead ends: 105 [2020-10-20 01:44:11,703 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 01:44:11,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 01:44:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-20 01:44:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 01:44:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-10-20 01:44:11,728 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2020-10-20 01:44:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:11,729 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-10-20 01:44:11,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-10-20 01:44:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:44:11,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:11,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:11,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:44:11,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:11,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2020-10-20 01:44:11,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:11,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002184341] [2020-10-20 01:44:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:11,813 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 01:44:11,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002184341] [2020-10-20 01:44:11,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:11,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:11,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765557626] [2020-10-20 01:44:11,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:11,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:11,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:11,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:11,816 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2020-10-20 01:44:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:11,891 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2020-10-20 01:44:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:11,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:44:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:11,894 INFO L225 Difference]: With dead ends: 171 [2020-10-20 01:44:11,894 INFO L226 Difference]: Without dead ends: 113 [2020-10-20 01:44:11,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:44:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-20 01:44:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-10-20 01:44:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 01:44:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-10-20 01:44:11,920 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2020-10-20 01:44:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:11,921 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-10-20 01:44:11,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-10-20 01:44:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:44:11,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:11,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:11,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:44:11,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:11,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2020-10-20 01:44:11,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:11,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570671869] [2020-10-20 01:44:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:12,052 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 01:44:12,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570671869] [2020-10-20 01:44:12,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:12,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:12,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616022491] [2020-10-20 01:44:12,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:12,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:12,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:12,055 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2020-10-20 01:44:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:12,150 INFO L93 Difference]: Finished difference Result 247 states and 346 transitions. [2020-10-20 01:44:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:12,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:44:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:12,153 INFO L225 Difference]: With dead ends: 247 [2020-10-20 01:44:12,153 INFO L226 Difference]: Without dead ends: 183 [2020-10-20 01:44:12,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-20 01:44:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-10-20 01:44:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 01:44:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2020-10-20 01:44:12,192 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 30 [2020-10-20 01:44:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:12,192 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2020-10-20 01:44:12,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2020-10-20 01:44:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:12,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:12,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:12,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:44:12,195 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash -359204993, now seen corresponding path program 1 times [2020-10-20 01:44:12,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:12,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443121596] [2020-10-20 01:44:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:12,257 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 01:44:12,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443121596] [2020-10-20 01:44:12,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:12,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:12,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99577780] [2020-10-20 01:44:12,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:12,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:12,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:12,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:12,260 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand 4 states. [2020-10-20 01:44:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:12,359 INFO L93 Difference]: Finished difference Result 234 states and 321 transitions. [2020-10-20 01:44:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:12,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:12,361 INFO L225 Difference]: With dead ends: 234 [2020-10-20 01:44:12,361 INFO L226 Difference]: Without dead ends: 170 [2020-10-20 01:44:12,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-20 01:44:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-20 01:44:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-20 01:44:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-10-20 01:44:12,379 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 31 [2020-10-20 01:44:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:12,379 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-10-20 01:44:12,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2020-10-20 01:44:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:12,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:12,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:12,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:44:12,381 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash -101039555, now seen corresponding path program 1 times [2020-10-20 01:44:12,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:12,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567067138] [2020-10-20 01:44:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:12,452 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 01:44:12,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567067138] [2020-10-20 01:44:12,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:12,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:12,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283857222] [2020-10-20 01:44:12,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:12,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:12,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:12,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:12,455 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand 4 states. [2020-10-20 01:44:12,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:12,512 INFO L93 Difference]: Finished difference Result 394 states and 542 transitions. [2020-10-20 01:44:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:12,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:12,515 INFO L225 Difference]: With dead ends: 394 [2020-10-20 01:44:12,515 INFO L226 Difference]: Without dead ends: 275 [2020-10-20 01:44:12,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 01:44:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-20 01:44:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 161. [2020-10-20 01:44:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 01:44:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2020-10-20 01:44:12,531 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 31 [2020-10-20 01:44:12,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:12,532 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2020-10-20 01:44:12,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:12,532 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2020-10-20 01:44:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:12,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:12,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:12,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:44:12,533 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:12,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:12,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1138389688, now seen corresponding path program 1 times [2020-10-20 01:44:12,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:12,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354192233] [2020-10-20 01:44:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:12,606 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 01:44:12,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354192233] [2020-10-20 01:44:12,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:12,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:12,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651784456] [2020-10-20 01:44:12,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:12,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:12,611 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand 5 states. [2020-10-20 01:44:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:12,790 INFO L93 Difference]: Finished difference Result 347 states and 473 transitions. [2020-10-20 01:44:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:12,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:44:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:12,792 INFO L225 Difference]: With dead ends: 347 [2020-10-20 01:44:12,792 INFO L226 Difference]: Without dead ends: 234 [2020-10-20 01:44:12,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-20 01:44:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 157. [2020-10-20 01:44:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 01:44:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2020-10-20 01:44:12,806 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 31 [2020-10-20 01:44:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:12,806 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2020-10-20 01:44:12,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:12,807 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2020-10-20 01:44:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-20 01:44:12,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:12,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:12,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:44:12,809 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2032974090, now seen corresponding path program 1 times [2020-10-20 01:44:12,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:12,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709506511] [2020-10-20 01:44:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:12,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709506511] [2020-10-20 01:44:12,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:12,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:44:12,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933916452] [2020-10-20 01:44:12,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:12,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:12,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:12,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:12,919 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand 6 states. [2020-10-20 01:44:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:13,013 INFO L93 Difference]: Finished difference Result 331 states and 442 transitions. [2020-10-20 01:44:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:13,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-20 01:44:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:13,019 INFO L225 Difference]: With dead ends: 331 [2020-10-20 01:44:13,020 INFO L226 Difference]: Without dead ends: 180 [2020-10-20 01:44:13,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:44:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-20 01:44:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-10-20 01:44:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-20 01:44:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 173 transitions. [2020-10-20 01:44:13,042 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 173 transitions. Word has length 48 [2020-10-20 01:44:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:13,043 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 173 transitions. [2020-10-20 01:44:13,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 173 transitions. [2020-10-20 01:44:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-20 01:44:13,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:13,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:13,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:44:13,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash -978255182, now seen corresponding path program 1 times [2020-10-20 01:44:13,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:13,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8238342] [2020-10-20 01:44:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-20 01:44:13,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8238342] [2020-10-20 01:44:13,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:13,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:13,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957344501] [2020-10-20 01:44:13,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:13,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:13,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:13,137 INFO L87 Difference]: Start difference. First operand 133 states and 173 transitions. Second operand 6 states. [2020-10-20 01:44:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:13,281 INFO L93 Difference]: Finished difference Result 675 states and 895 transitions. [2020-10-20 01:44:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:44:13,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-20 01:44:13,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:13,286 INFO L225 Difference]: With dead ends: 675 [2020-10-20 01:44:13,286 INFO L226 Difference]: Without dead ends: 548 [2020-10-20 01:44:13,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:44:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-20 01:44:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 258. [2020-10-20 01:44:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-20 01:44:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 333 transitions. [2020-10-20 01:44:13,326 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 333 transitions. Word has length 49 [2020-10-20 01:44:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:13,327 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 333 transitions. [2020-10-20 01:44:13,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 333 transitions. [2020-10-20 01:44:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 01:44:13,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:13,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:13,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 01:44:13,328 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 216776629, now seen corresponding path program 1 times [2020-10-20 01:44:13,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:13,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668157591] [2020-10-20 01:44:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:13,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668157591] [2020-10-20 01:44:13,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760925230] [2020-10-20 01:44:13,414 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 01:44:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:13,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:44:13,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:44:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:13,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:44:13,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 01:44:13,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699293444] [2020-10-20 01:44:13,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:13,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:13,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:13,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:13,729 INFO L87 Difference]: Start difference. First operand 258 states and 333 transitions. Second operand 6 states. [2020-10-20 01:44:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:14,017 INFO L93 Difference]: Finished difference Result 786 states and 1030 transitions. [2020-10-20 01:44:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:14,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-20 01:44:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:14,022 INFO L225 Difference]: With dead ends: 786 [2020-10-20 01:44:14,022 INFO L226 Difference]: Without dead ends: 582 [2020-10-20 01:44:14,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:44:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-20 01:44:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 362. [2020-10-20 01:44:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-10-20 01:44:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 470 transitions. [2020-10-20 01:44:14,063 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 470 transitions. Word has length 50 [2020-10-20 01:44:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:14,065 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 470 transitions. [2020-10-20 01:44:14,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 470 transitions. [2020-10-20 01:44:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-20 01:44:14,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:14,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:14,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 01:44:14,281 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:14,281 INFO L82 PathProgramCache]: Analyzing trace with hash -691023976, now seen corresponding path program 2 times [2020-10-20 01:44:14,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:14,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015135210] [2020-10-20 01:44:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:14,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:14,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:14,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:44:14,502 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:44:14,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 01:44:14,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:44:14 BoogieIcfgContainer [2020-10-20 01:44:14,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:44:14,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:44:14,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:44:14,706 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:44:14,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:10" (3/4) ... [2020-10-20 01:44:14,709 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:44:14,921 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:44:14,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:44:14,923 INFO L168 Benchmark]: Toolchain (without parser) took 6115.98 ms. Allocated memory was 35.1 MB in the beginning and 92.3 MB in the end (delta: 57.1 MB). Free memory was 6.7 MB in the beginning and 47.0 MB in the end (delta: -40.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,924 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 35.1 MB. Free memory was 13.5 MB in the beginning and 13.4 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.21 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 18.4 MB in the beginning and 29.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.09 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 24.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,926 INFO L168 Benchmark]: Boogie Preprocessor took 49.14 ms. Allocated memory is still 46.1 MB. Free memory was 24.9 MB in the beginning and 21.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,926 INFO L168 Benchmark]: RCFGBuilder took 940.58 ms. Allocated memory was 46.1 MB in the beginning and 49.3 MB in the end (delta: 3.1 MB). Free memory was 21.9 MB in the beginning and 13.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,927 INFO L168 Benchmark]: TraceAbstraction took 4165.53 ms. Allocated memory was 49.3 MB in the beginning and 88.1 MB in the end (delta: 38.8 MB). Free memory was 13.4 MB in the beginning and 30.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,928 INFO L168 Benchmark]: Witness Printer took 215.74 ms. Allocated memory was 88.1 MB in the beginning and 92.3 MB in the end (delta: 4.2 MB). Free memory was 30.6 MB in the beginning and 47.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:14,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 35.1 MB. Free memory was 13.5 MB in the beginning and 13.4 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 625.21 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 18.4 MB in the beginning and 29.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 99.09 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 24.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.14 ms. Allocated memory is still 46.1 MB. Free memory was 24.9 MB in the beginning and 21.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 940.58 ms. Allocated memory was 46.1 MB in the beginning and 49.3 MB in the end (delta: 3.1 MB). Free memory was 21.9 MB in the beginning and 13.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4165.53 ms. Allocated memory was 49.3 MB in the beginning and 88.1 MB in the end (delta: 38.8 MB). Free memory was 13.4 MB in the beginning and 30.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.3 GB. * Witness Printer took 215.74 ms. Allocated memory was 88.1 MB in the beginning and 92.3 MB in the end (delta: 4.2 MB). Free memory was 30.6 MB in the beginning and 47.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L157] int pumpRunning = 0; [L158] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L705] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] int retValue_acc ; [L410] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L416] tmp = valid_product() [L418] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L223] COND FALSE !(\read(pumpRunning)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND TRUE ! pumpRunning [L317] int retValue_acc ; [L318] int tmp ; [L319] int tmp___0 ; [L522] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] tmp = isHighWaterSensorDry() [L325] COND FALSE !(\read(tmp)) [L328] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L330] retValue_acc = tmp___0 [L331] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] tmp = isHighWaterLevel() [L201] COND TRUE \read(tmp) [L248] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] COND TRUE \read(pumpRunning) [L261] int retValue_acc ; [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L225] tmp = isMethaneAlarm() [L227] COND FALSE !(\read(tmp)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] COND TRUE \read(pumpRunning) [L261] int retValue_acc ; [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L225] tmp = isMethaneAlarm() [L227] COND FALSE !(\read(tmp)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L908] tmp = getWaterLevel() [L910] COND TRUE tmp == 0 [L272] int retValue_acc ; [L275] retValue_acc = pumpRunning [L276] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product37.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 1704 SDslu, 1731 SDs, 0 SdLazy, 272 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 866 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 30071 SizeOfPredicates, 4 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...