./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product52.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_spec1_product52.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 bde924d16b17f34a4892c0a089b602f0bd3cd51c ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:41:48,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:48,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:48,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:48,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:48,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:48,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:48,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:48,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:48,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:48,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:48,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:48,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:48,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:48,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:48,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:48,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:48,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:48,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:48,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:48,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:48,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:48,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:48,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:48,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:48,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:48,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:48,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:48,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:48,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:48,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:48,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:48,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:48,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:48,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:48,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:48,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:48,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:48,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:48,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:48,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:48,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:48,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:48,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:48,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:48,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:48,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:48,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:48,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:48,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:48,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:48,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:48,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:48,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:48,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:48,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:48,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:48,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:48,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:48,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:48,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:48,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:48,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:48,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:48,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:48,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:48,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:48,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:48,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:48,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:48,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:48,646 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 -> bde924d16b17f34a4892c0a089b602f0bd3cd51c [2020-10-20 01:41:48,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:48,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:48,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:48,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:48,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:48,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2020-10-20 01:41:48,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5633bcc78/2e036c929eef4420aa0dd7de8139c6b4/FLAG1ee8b314e [2020-10-20 01:41:49,487 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:49,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2020-10-20 01:41:49,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5633bcc78/2e036c929eef4420aa0dd7de8139c6b4/FLAG1ee8b314e [2020-10-20 01:41:49,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5633bcc78/2e036c929eef4420aa0dd7de8139c6b4 [2020-10-20 01:41:49,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:49,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:49,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:49,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:49,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:49,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:49" (1/1) ... [2020-10-20 01:41:49,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a7afa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:49, skipping insertion in model container [2020-10-20 01:41:49,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:49" (1/1) ... [2020-10-20 01:41:49,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:49,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:50,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:50,275 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:50,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:50,425 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:50,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50 WrapperNode [2020-10-20 01:41:50,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:50,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:50,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:50,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:50,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:50,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:50,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:50,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:50,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:50,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:50,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:50,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:50,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (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 01:41:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:51,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:51,632 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-10-20 01:41:51,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:51 BoogieIcfgContainer [2020-10-20 01:41:51,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:51,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:51,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:51,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:51,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:49" (1/3) ... [2020-10-20 01:41:51,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb62f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:51, skipping insertion in model container [2020-10-20 01:41:51,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (2/3) ... [2020-10-20 01:41:51,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb62f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:51, skipping insertion in model container [2020-10-20 01:41:51,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:51" (3/3) ... [2020-10-20 01:41:51,643 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-10-20 01:41:51,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:51,674 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:51,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:51,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:51,710 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:51,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:51,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:51,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:51,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:51,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:51,713 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-10-20 01:41:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:51,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:51,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:51,745 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1013956240, now seen corresponding path program 1 times [2020-10-20 01:41:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:51,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650145218] [2020-10-20 01:41:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:51,986 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 01:41:51,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650145218] [2020-10-20 01:41:51,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:51,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:51,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26453948] [2020-10-20 01:41:51,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:51,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:52,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:52,010 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-10-20 01:41:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,045 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2020-10-20 01:41:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:52,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,059 INFO L225 Difference]: With dead ends: 235 [2020-10-20 01:41:52,059 INFO L226 Difference]: Without dead ends: 115 [2020-10-20 01:41:52,063 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 01:41:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-20 01:41:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-20 01:41:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-20 01:41:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-10-20 01:41:52,126 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2020-10-20 01:41:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,127 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-10-20 01:41:52,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-10-20 01:41:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:52,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,129 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 01:41:52,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:52,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2060713137, now seen corresponding path program 1 times [2020-10-20 01:41:52,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692088530] [2020-10-20 01:41:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,304 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 01:41:52,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692088530] [2020-10-20 01:41:52,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:52,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140975076] [2020-10-20 01:41:52,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:52,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:52,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:52,308 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-10-20 01:41:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,322 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-10-20 01:41:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:52,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,324 INFO L225 Difference]: With dead ends: 115 [2020-10-20 01:41:52,324 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 01:41:52,326 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 01:41:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 01:41:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-20 01:41:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 01:41:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-10-20 01:41:52,332 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2020-10-20 01:41:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,333 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-10-20 01:41:52,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-10-20 01:41:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:52,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,335 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 01:41:52,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:52,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2061312917, now seen corresponding path program 1 times [2020-10-20 01:41:52,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46760343] [2020-10-20 01:41:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,495 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 01:41:52,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46760343] [2020-10-20 01:41:52,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:52,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857236172] [2020-10-20 01:41:52,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:52,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:52,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:52,499 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 5 states. [2020-10-20 01:41:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,588 INFO L93 Difference]: Finished difference Result 115 states and 170 transitions. [2020-10-20 01:41:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:52,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 01:41:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,590 INFO L225 Difference]: With dead ends: 115 [2020-10-20 01:41:52,590 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 01:41:52,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:41:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 01:41:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-20 01:41:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 01:41:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-10-20 01:41:52,603 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 22 [2020-10-20 01:41:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,604 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-10-20 01:41:52,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-10-20 01:41:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:41:52,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,605 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 01:41:52,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:52,606 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1499976397, now seen corresponding path program 1 times [2020-10-20 01:41:52,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802234474] [2020-10-20 01:41:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,664 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 01:41:52,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802234474] [2020-10-20 01:41:52,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:52,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376181577] [2020-10-20 01:41:52,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:52,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:52,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:52,666 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-10-20 01:41:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,707 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2020-10-20 01:41:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:52,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:41:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,708 INFO L225 Difference]: With dead ends: 151 [2020-10-20 01:41:52,709 INFO L226 Difference]: Without dead ends: 89 [2020-10-20 01:41:52,709 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 01:41:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-20 01:41:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-20 01:41:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 01:41:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2020-10-20 01:41:52,737 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 24 [2020-10-20 01:41:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,738 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2020-10-20 01:41:52,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2020-10-20 01:41:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:52,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,739 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] [2020-10-20 01:41:52,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:52,740 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1678878848, now seen corresponding path program 1 times [2020-10-20 01:41:52,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251875324] [2020-10-20 01:41:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,814 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 01:41:52,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251875324] [2020-10-20 01:41:52,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:52,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261677474] [2020-10-20 01:41:52,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:52,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:52,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:52,816 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand 5 states. [2020-10-20 01:41:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,917 INFO L93 Difference]: Finished difference Result 445 states and 650 transitions. [2020-10-20 01:41:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:52,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,921 INFO L225 Difference]: With dead ends: 445 [2020-10-20 01:41:52,921 INFO L226 Difference]: Without dead ends: 364 [2020-10-20 01:41:52,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-20 01:41:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 160. [2020-10-20 01:41:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-20 01:41:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 226 transitions. [2020-10-20 01:41:52,944 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 226 transitions. Word has length 25 [2020-10-20 01:41:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,945 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 226 transitions. [2020-10-20 01:41:52,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 226 transitions. [2020-10-20 01:41:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:52,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,946 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] [2020-10-20 01:41:52,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:52,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1475071754, now seen corresponding path program 1 times [2020-10-20 01:41:52,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281165375] [2020-10-20 01:41:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,010 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 01:41:53,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281165375] [2020-10-20 01:41:53,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:53,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840045908] [2020-10-20 01:41:53,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:53,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:53,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:53,013 INFO L87 Difference]: Start difference. First operand 160 states and 226 transitions. Second operand 5 states. [2020-10-20 01:41:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,165 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2020-10-20 01:41:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:53,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,168 INFO L225 Difference]: With dead ends: 448 [2020-10-20 01:41:53,168 INFO L226 Difference]: Without dead ends: 446 [2020-10-20 01:41:53,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-20 01:41:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 160. [2020-10-20 01:41:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-20 01:41:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 224 transitions. [2020-10-20 01:41:53,188 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 224 transitions. Word has length 26 [2020-10-20 01:41:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,188 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 224 transitions. [2020-10-20 01:41:53,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 224 transitions. [2020-10-20 01:41:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:53,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,191 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 01:41:53,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:53,191 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash 317568404, now seen corresponding path program 1 times [2020-10-20 01:41:53,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145096532] [2020-10-20 01:41:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,246 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 01:41:53,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145096532] [2020-10-20 01:41:53,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:53,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216799315] [2020-10-20 01:41:53,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:53,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:53,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:53,249 INFO L87 Difference]: Start difference. First operand 160 states and 224 transitions. Second operand 5 states. [2020-10-20 01:41:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,340 INFO L93 Difference]: Finished difference Result 476 states and 660 transitions. [2020-10-20 01:41:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:53,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,343 INFO L225 Difference]: With dead ends: 476 [2020-10-20 01:41:53,343 INFO L226 Difference]: Without dead ends: 322 [2020-10-20 01:41:53,344 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 01:41:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-20 01:41:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 172. [2020-10-20 01:41:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 01:41:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 236 transitions. [2020-10-20 01:41:53,361 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 236 transitions. Word has length 31 [2020-10-20 01:41:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,362 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 236 transitions. [2020-10-20 01:41:53,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 236 transitions. [2020-10-20 01:41:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:53,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,364 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 01:41:53,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:53,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,365 INFO L82 PathProgramCache]: Analyzing trace with hash -75458606, now seen corresponding path program 1 times [2020-10-20 01:41:53,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026673985] [2020-10-20 01:41:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,423 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 01:41:53,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026673985] [2020-10-20 01:41:53,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:41:53,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603688646] [2020-10-20 01:41:53,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:41:53,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:41:53,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:41:53,426 INFO L87 Difference]: Start difference. First operand 172 states and 236 transitions. Second operand 6 states. [2020-10-20 01:41:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,619 INFO L93 Difference]: Finished difference Result 510 states and 694 transitions. [2020-10-20 01:41:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:41:53,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-20 01:41:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,622 INFO L225 Difference]: With dead ends: 510 [2020-10-20 01:41:53,622 INFO L226 Difference]: Without dead ends: 344 [2020-10-20 01:41:53,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:41:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-20 01:41:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 180. [2020-10-20 01:41:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-20 01:41:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 244 transitions. [2020-10-20 01:41:53,641 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 244 transitions. Word has length 31 [2020-10-20 01:41:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,642 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 244 transitions. [2020-10-20 01:41:53,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:41:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 244 transitions. [2020-10-20 01:41:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:53,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,644 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 01:41:53,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:53,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,645 INFO L82 PathProgramCache]: Analyzing trace with hash 182706832, now seen corresponding path program 1 times [2020-10-20 01:41:53,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805285776] [2020-10-20 01:41:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,690 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 01:41:53,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805285776] [2020-10-20 01:41:53,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:53,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379448807] [2020-10-20 01:41:53,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:53,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:53,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:53,693 INFO L87 Difference]: Start difference. First operand 180 states and 244 transitions. Second operand 3 states. [2020-10-20 01:41:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,733 INFO L93 Difference]: Finished difference Result 442 states and 598 transitions. [2020-10-20 01:41:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:53,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-20 01:41:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,736 INFO L225 Difference]: With dead ends: 442 [2020-10-20 01:41:53,736 INFO L226 Difference]: Without dead ends: 268 [2020-10-20 01:41:53,737 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 01:41:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-20 01:41:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2020-10-20 01:41:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-20 01:41:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 354 transitions. [2020-10-20 01:41:53,763 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 354 transitions. Word has length 31 [2020-10-20 01:41:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,764 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 354 transitions. [2020-10-20 01:41:53,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 354 transitions. [2020-10-20 01:41:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:53,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,766 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, 1] [2020-10-20 01:41:53,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:53,766 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1930053038, now seen corresponding path program 1 times [2020-10-20 01:41:53,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437818529] [2020-10-20 01:41:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:53,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:53,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:53,947 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:53,948 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:53,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:54,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:54 BoogieIcfgContainer [2020-10-20 01:41:54,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:54,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:54,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:54,077 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:54,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:51" (3/4) ... [2020-10-20 01:41:54,082 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:54,233 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:54,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:54,235 INFO L168 Benchmark]: Toolchain (without parser) took 4440.04 ms. Allocated memory was 37.2 MB in the beginning and 78.6 MB in the end (delta: 41.4 MB). Free memory was 18.0 MB in the beginning and 25.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,236 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.51 ms. Allocated memory was 37.2 MB in the beginning and 47.2 MB in the end (delta: 10.0 MB). Free memory was 17.1 MB in the beginning and 29.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.78 ms. Allocated memory is still 47.2 MB. Free memory was 29.1 MB in the beginning and 25.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,238 INFO L168 Benchmark]: Boogie Preprocessor took 72.54 ms. Allocated memory is still 47.2 MB. Free memory was 25.0 MB in the beginning and 22.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,238 INFO L168 Benchmark]: RCFGBuilder took 995.76 ms. Allocated memory was 47.2 MB in the beginning and 49.8 MB in the end (delta: 2.6 MB). Free memory was 22.1 MB in the beginning and 13.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,239 INFO L168 Benchmark]: TraceAbstraction took 2440.71 ms. Allocated memory was 49.8 MB in the beginning and 78.6 MB in the end (delta: 28.8 MB). Free memory was 12.6 MB in the beginning and 41.0 MB in the end (delta: -28.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,239 INFO L168 Benchmark]: Witness Printer took 156.76 ms. Allocated memory is still 78.6 MB. Free memory was 41.0 MB in the beginning and 25.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 625.51 ms. Allocated memory was 37.2 MB in the beginning and 47.2 MB in the end (delta: 10.0 MB). Free memory was 17.1 MB in the beginning and 29.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 135.78 ms. Allocated memory is still 47.2 MB. Free memory was 29.1 MB in the beginning and 25.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 72.54 ms. Allocated memory is still 47.2 MB. Free memory was 25.0 MB in the beginning and 22.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 995.76 ms. Allocated memory was 47.2 MB in the beginning and 49.8 MB in the end (delta: 2.6 MB). Free memory was 22.1 MB in the beginning and 13.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2440.71 ms. Allocated memory was 49.8 MB in the beginning and 78.6 MB in the end (delta: 28.8 MB). Free memory was 12.6 MB in the beginning and 41.0 MB in the end (delta: -28.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.3 GB. * Witness Printer took 156.76 ms. Allocated memory is still 78.6 MB. Free memory was 41.0 MB in the beginning and 25.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 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: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L460] int cleanupTimeShifts = 4; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L537] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L977] int retValue_acc ; [L980] retValue_acc = 1 [L981] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L543] tmp = valid_product() [L545] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L392] int splverifierCounter ; [L393] int tmp ; [L394] int tmp___0 ; [L395] int tmp___1 ; [L396] int tmp___2 ; [L399] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L403] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] tmp = __VERIFIER_nondet_int() [L411] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L419] tmp___0 = __VERIFIER_nondet_int() [L421] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L80] COND FALSE !(\read(methaneLevelCritical)) [L83] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L429] tmp___2 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___2) [L376] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L175] COND TRUE \read(systemActive) [L223] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L226] COND FALSE !(\read(pumpRunning)) [L197] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] COND TRUE ! pumpRunning [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L130] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L326] tmp = isHighWaterSensorDry() [L328] COND FALSE !(\read(tmp)) [L331] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L202] tmp = isHighWaterLevel() [L204] COND TRUE \read(tmp) [L251] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L560] int tmp ; [L561] int tmp___0 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = isMethaneLevelCritical() [L567] COND TRUE \read(tmp) [L275] int retValue_acc ; [L278] retValue_acc = pumpRunning [L279] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L569] tmp___0 = isPumpRunning() [L571] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product52.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 873 SDtfs, 1371 SDslu, 1164 SDs, 0 SdLazy, 154 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=9, 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, 9 MinimizatonAttempts, 810 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 10236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...