./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product33.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_product33.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 9f716f844e272d3040100c1f49345c7fdf02d773 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:44:05,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:44:05,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:44:05,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:44:05,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:44:05,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:44:05,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:44:05,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:44:05,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:44:05,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:44:05,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:44:05,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:44:05,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:44:05,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:44:05,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:44:05,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:44:05,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:44:05,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:44:05,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:44:05,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:44:05,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:44:05,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:44:05,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:44:05,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:44:05,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:44:05,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:44:05,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:44:05,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:44:05,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:44:05,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:44:05,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:44:05,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:44:05,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:44:05,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:44:05,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:44:05,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:44:05,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:44:05,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:44:05,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:44:05,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:44:05,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:44:05,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:44:05,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:44:05,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:44:05,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:44:05,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:44:05,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:44:05,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:44:05,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:44:05,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:44:05,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:44:05,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:44:05,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:44:05,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:44:05,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:44:05,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:44:05,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:44:05,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:44:05,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:44:05,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:44:05,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:44:05,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:44:05,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:44:05,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:05,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:44:05,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:44:05,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:44:05,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:44:05,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:44:05,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:44:05,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:44:05,786 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 -> 9f716f844e272d3040100c1f49345c7fdf02d773 [2020-10-20 01:44:06,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:44:06,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:44:06,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:44:06,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:44:06,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:44:06,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2020-10-20 01:44:06,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb459c6a/083dc5bd630944629e237d8c8e73b812/FLAG0a7de9d3c [2020-10-20 01:44:06,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:44:06,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2020-10-20 01:44:06,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb459c6a/083dc5bd630944629e237d8c8e73b812/FLAG0a7de9d3c [2020-10-20 01:44:06,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb459c6a/083dc5bd630944629e237d8c8e73b812 [2020-10-20 01:44:06,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:44:06,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:44:06,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:06,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:44:06,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:44:06,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:06" (1/1) ... [2020-10-20 01:44:06,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b1fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:06, skipping insertion in model container [2020-10-20 01:44:06,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:06" (1/1) ... [2020-10-20 01:44:06,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:44:07,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:44:07,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:07,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:44:07,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:07,647 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:44:07,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07 WrapperNode [2020-10-20 01:44:07,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:07,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:07,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:44:07,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:44:07,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:07,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:44:07,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:44:07,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:44:07,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (1/1) ... [2020-10-20 01:44:07,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:44:07,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:44:07,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:44:07,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:44:07,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (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 01:44:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:44:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:44:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:44:07,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:44:08,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:44:08,697 INFO L298 CfgBuilder]: Removed 102 assume(true) statements. [2020-10-20 01:44:08,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:08 BoogieIcfgContainer [2020-10-20 01:44:08,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:44:08,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:44:08,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:44:08,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:44:08,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:44:06" (1/3) ... [2020-10-20 01:44:08,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edc3596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:08, skipping insertion in model container [2020-10-20 01:44:08,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:07" (2/3) ... [2020-10-20 01:44:08,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edc3596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:08, skipping insertion in model container [2020-10-20 01:44:08,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:08" (3/3) ... [2020-10-20 01:44:08,708 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-10-20 01:44:08,721 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:44:08,728 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:44:08,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:44:08,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:44:08,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:44:08,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:44:08,771 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:44:08,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:44:08,772 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:44:08,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:44:08,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:44:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-10-20 01:44:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:44:08,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:08,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:08,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:08,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2080133685, now seen corresponding path program 1 times [2020-10-20 01:44:08,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:08,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768994993] [2020-10-20 01:44:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:09,101 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 01:44:09,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768994993] [2020-10-20 01:44:09,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:09,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:09,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840148931] [2020-10-20 01:44:09,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:44:09,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:44:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:09,129 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2020-10-20 01:44:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:09,159 INFO L93 Difference]: Finished difference Result 153 states and 230 transitions. [2020-10-20 01:44:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:44:09,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:44:09,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:09,172 INFO L225 Difference]: With dead ends: 153 [2020-10-20 01:44:09,172 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 01:44:09,175 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 01:44:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 01:44:09,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 01:44:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 01:44:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-10-20 01:44:09,215 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-10-20 01:44:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:09,216 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-10-20 01:44:09,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:44:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-10-20 01:44:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:44:09,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:09,217 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 01:44:09,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:44:09,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash 220788147, now seen corresponding path program 1 times [2020-10-20 01:44:09,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:09,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210720390] [2020-10-20 01:44:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:09,350 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 01:44:09,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210720390] [2020-10-20 01:44:09,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:09,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:09,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594432620] [2020-10-20 01:44:09,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:09,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:09,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:09,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:09,355 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-10-20 01:44:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:09,366 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-10-20 01:44:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:09,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:44:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:09,368 INFO L225 Difference]: With dead ends: 74 [2020-10-20 01:44:09,369 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 01:44:09,370 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 01:44:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 01:44:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 01:44:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 01:44:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-10-20 01:44:09,376 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-10-20 01:44:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:09,377 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-10-20 01:44:09,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-10-20 01:44:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:44:09,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:09,378 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 01:44:09,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:44:09,379 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2020-10-20 01:44:09,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:09,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865585826] [2020-10-20 01:44:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:09,562 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 01:44:09,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865585826] [2020-10-20 01:44:09,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:09,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:09,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638644713] [2020-10-20 01:44:09,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:09,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:09,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:09,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:09,566 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 6 states. [2020-10-20 01:44:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:09,766 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-10-20 01:44:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:09,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-20 01:44:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:09,768 INFO L225 Difference]: With dead ends: 62 [2020-10-20 01:44:09,768 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 01:44:09,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 01:44:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 01:44:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 01:44:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-10-20 01:44:09,776 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-10-20 01:44:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:09,776 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-10-20 01:44:09,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-10-20 01:44:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:44:09,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:09,778 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] [2020-10-20 01:44:09,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:44:09,779 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2020-10-20 01:44:09,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:09,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967099486] [2020-10-20 01:44:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:09,884 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 01:44:09,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967099486] [2020-10-20 01:44:09,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:09,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:09,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398007421] [2020-10-20 01:44:09,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:09,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:09,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:09,887 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-10-20 01:44:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:09,920 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-10-20 01:44:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:09,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-20 01:44:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:09,923 INFO L225 Difference]: With dead ends: 83 [2020-10-20 01:44:09,923 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 01:44:09,924 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 01:44:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 01:44:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-20 01:44:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 01:44:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-10-20 01:44:09,933 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-10-20 01:44:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:09,934 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-10-20 01:44:09,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-10-20 01:44:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 01:44:09,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:09,936 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] [2020-10-20 01:44:09,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:44:09,936 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:09,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2020-10-20 01:44:09,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:09,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115970463] [2020-10-20 01:44:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:10,025 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 01:44:10,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115970463] [2020-10-20 01:44:10,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:10,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:10,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192858090] [2020-10-20 01:44:10,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:10,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:10,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:10,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:10,028 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-10-20 01:44:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:10,082 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-10-20 01:44:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:10,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-20 01:44:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:10,084 INFO L225 Difference]: With dead ends: 139 [2020-10-20 01:44:10,084 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 01:44:10,085 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 01:44:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 01:44:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-10-20 01:44:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 01:44:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-10-20 01:44:10,095 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-10-20 01:44:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:10,118 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-10-20 01:44:10,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-10-20 01:44:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 01:44:10,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:10,120 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] [2020-10-20 01:44:10,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:44:10,120 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2020-10-20 01:44:10,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:10,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098818429] [2020-10-20 01:44:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:10,225 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 01:44:10,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098818429] [2020-10-20 01:44:10,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:10,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 01:44:10,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637217827] [2020-10-20 01:44:10,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:44:10,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:10,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:44:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:10,230 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 8 states. [2020-10-20 01:44:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:10,622 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2020-10-20 01:44:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 01:44:10,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-20 01:44:10,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:10,631 INFO L225 Difference]: With dead ends: 347 [2020-10-20 01:44:10,632 INFO L226 Difference]: Without dead ends: 297 [2020-10-20 01:44:10,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-20 01:44:10,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-20 01:44:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2020-10-20 01:44:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-20 01:44:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2020-10-20 01:44:10,682 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2020-10-20 01:44:10,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:10,684 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2020-10-20 01:44:10,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:44:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2020-10-20 01:44:10,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-20 01:44:10,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:10,689 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] [2020-10-20 01:44:10,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:44:10,689 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:10,690 INFO L82 PathProgramCache]: Analyzing trace with hash -38679238, now seen corresponding path program 1 times [2020-10-20 01:44:10,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:10,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120957499] [2020-10-20 01:44:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:10,793 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 01:44:10,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120957499] [2020-10-20 01:44:10,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:10,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:10,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957243008] [2020-10-20 01:44:10,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:10,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:10,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:10,796 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 4 states. [2020-10-20 01:44:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:10,840 INFO L93 Difference]: Finished difference Result 299 states and 406 transitions. [2020-10-20 01:44:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:10,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-20 01:44:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:10,843 INFO L225 Difference]: With dead ends: 299 [2020-10-20 01:44:10,843 INFO L226 Difference]: Without dead ends: 165 [2020-10-20 01:44:10,847 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 01:44:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-20 01:44:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2020-10-20 01:44:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-20 01:44:10,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2020-10-20 01:44:10,880 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2020-10-20 01:44:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:10,883 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2020-10-20 01:44:10,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2020-10-20 01:44:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 01:44:10,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:10,895 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] [2020-10-20 01:44:10,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:44:10,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 4866618, now seen corresponding path program 1 times [2020-10-20 01:44:10,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:10,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256918370] [2020-10-20 01:44:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:11,033 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 01:44:11,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256918370] [2020-10-20 01:44:11,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139243645] [2020-10-20 01:44:11,034 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 01:44:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:11,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:44:11,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:44:11,266 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 01:44:11,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:44:11,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-20 01:44:11,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599483751] [2020-10-20 01:44:11,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 01:44:11,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:11,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 01:44:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:11,269 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 8 states. [2020-10-20 01:44:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:11,502 INFO L93 Difference]: Finished difference Result 412 states and 570 transitions. [2020-10-20 01:44:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 01:44:11,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-20 01:44:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:11,505 INFO L225 Difference]: With dead ends: 412 [2020-10-20 01:44:11,505 INFO L226 Difference]: Without dead ends: 321 [2020-10-20 01:44:11,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-20 01:44:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-20 01:44:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 159. [2020-10-20 01:44:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 01:44:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2020-10-20 01:44:11,538 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 45 [2020-10-20 01:44:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:11,539 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2020-10-20 01:44:11,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 01:44:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2020-10-20 01:44:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-20 01:44:11,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:11,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-20 01:44:11,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-20 01:44:11,755 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2052342276, now seen corresponding path program 2 times [2020-10-20 01:44:11,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:11,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127087363] [2020-10-20 01:44:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:11,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:11,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:11,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:44:11,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:44:11,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:44:12,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:44:12 BoogieIcfgContainer [2020-10-20 01:44:12,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:44:12,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:44:12,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:44:12,104 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:44:12,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:08" (3/4) ... [2020-10-20 01:44:12,107 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:44:12,292 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:44:12,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:44:12,295 INFO L168 Benchmark]: Toolchain (without parser) took 5353.65 ms. Allocated memory was 35.1 MB in the beginning and 71.8 MB in the end (delta: 36.7 MB). Free memory was 13.8 MB in the beginning and 9.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 41.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,296 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 33.6 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 42.1 kB). Peak memory consumption was 42.1 kB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.95 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.9 MB in the beginning and 16.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.03 ms. Allocated memory was 44.0 MB in the beginning and 43.5 MB in the end (delta: -524.3 kB). Free memory was 16.7 MB in the beginning and 25.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,298 INFO L168 Benchmark]: Boogie Preprocessor took 41.64 ms. Allocated memory is still 43.5 MB. Free memory was 25.3 MB in the beginning and 22.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,298 INFO L168 Benchmark]: RCFGBuilder took 929.42 ms. Allocated memory was 43.5 MB in the beginning and 49.3 MB in the end (delta: 5.8 MB). Free memory was 22.8 MB in the beginning and 25.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,299 INFO L168 Benchmark]: TraceAbstraction took 3402.43 ms. Allocated memory was 49.3 MB in the beginning and 71.8 MB in the end (delta: 22.5 MB). Free memory was 24.9 MB in the beginning and 36.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,299 INFO L168 Benchmark]: Witness Printer took 189.43 ms. Allocated memory is still 71.8 MB. Free memory was 36.4 MB in the beginning and 9.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:12,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 33.6 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 42.1 kB). Peak memory consumption was 42.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 700.95 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.9 MB in the beginning and 16.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 79.03 ms. Allocated memory was 44.0 MB in the beginning and 43.5 MB in the end (delta: -524.3 kB). Free memory was 16.7 MB in the beginning and 25.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 41.64 ms. Allocated memory is still 43.5 MB. Free memory was 25.3 MB in the beginning and 22.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 929.42 ms. Allocated memory was 43.5 MB in the beginning and 49.3 MB in the end (delta: 5.8 MB). Free memory was 22.8 MB in the beginning and 25.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3402.43 ms. Allocated memory was 49.3 MB in the beginning and 71.8 MB in the end (delta: 22.5 MB). Free memory was 24.9 MB in the beginning and 36.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.3 GB. * Witness Printer took 189.43 ms. Allocated memory is still 71.8 MB. Free memory was 36.4 MB in the beginning and 9.5 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L617] int waterLevel = 1; [L618] int methaneLevelCritical = 0; [L714] int pumpRunning = 0; [L715] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L490] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L635] COND TRUE waterLevel < 2 [L636] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L754] COND TRUE ! pumpRunning [L848] int retValue_acc ; [L849] int tmp ; [L850] int tmp___0 ; [L697] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L700] COND FALSE !(waterLevel < 2) [L704] retValue_acc = 0 [L705] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L854] tmp = isHighWaterSensorDry() [L856] COND FALSE !(\read(tmp)) [L859] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L861] retValue_acc = tmp___0 [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] tmp = isHighWaterLevel() [L758] COND TRUE \read(tmp) [L779] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L882] tmp = getWaterLevel() [L884] COND TRUE tmp == 0 [L803] int retValue_acc ; [L806] retValue_acc = pumpRunning [L807] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L886] tmp___0 = isPumpRunning() [L888] 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_product33.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, 81 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 554 SDtfs, 937 SDslu, 987 SDs, 0 SdLazy, 191 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 16788 SizeOfPredicates, 4 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 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...