./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product36.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_product36.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 0d9fe46be856096e0c78b096b76405a575c1ad90 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:41:36,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:36,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:36,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:36,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:36,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:36,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:36,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:36,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:36,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:36,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:36,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:36,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:36,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:36,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:36,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:36,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:36,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:36,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:36,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:36,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:36,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:36,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:36,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:36,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:36,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:36,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:36,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:36,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:36,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:36,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:36,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:36,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:36,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:36,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:36,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:36,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:36,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:36,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:36,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:36,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:36,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:36,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:36,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:36,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:36,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:36,722 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:36,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:36,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:36,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:36,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:36,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:36,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:36,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:36,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:36,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:36,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:36,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:36,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:36,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:36,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:36,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:36,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:36,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:36,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:36,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:36,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:36,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:36,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:36,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:36,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:36,730 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 -> 0d9fe46be856096e0c78b096b76405a575c1ad90 [2020-10-20 01:41:36,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:36,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:36,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:36,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:36,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:36,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2020-10-20 01:41:37,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd0505f14/976ae19909284d2b8bdadf9b894f8a14/FLAG2b5c64ea9 [2020-10-20 01:41:37,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:37,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2020-10-20 01:41:37,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd0505f14/976ae19909284d2b8bdadf9b894f8a14/FLAG2b5c64ea9 [2020-10-20 01:41:37,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd0505f14/976ae19909284d2b8bdadf9b894f8a14 [2020-10-20 01:41:37,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:37,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:37,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:37,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:37,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:37,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f0f285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37, skipping insertion in model container [2020-10-20 01:41:37,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:37,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:38,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:38,371 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:38,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:38,491 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:38,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38 WrapperNode [2020-10-20 01:41:38,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:38,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:38,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:38,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:38,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:38,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:38,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:38,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:38,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (1/1) ... [2020-10-20 01:41:38,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:38,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:38,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:38,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:38,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (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 01:41:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:38,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:39,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:39,671 INFO L298 CfgBuilder]: Removed 108 assume(true) statements. [2020-10-20 01:41:39,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:39 BoogieIcfgContainer [2020-10-20 01:41:39,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:39,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:39,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:39,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:39,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:37" (1/3) ... [2020-10-20 01:41:39,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491e188c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:39, skipping insertion in model container [2020-10-20 01:41:39,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:38" (2/3) ... [2020-10-20 01:41:39,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491e188c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:39, skipping insertion in model container [2020-10-20 01:41:39,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:39" (3/3) ... [2020-10-20 01:41:39,685 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-10-20 01:41:39,697 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:39,710 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:39,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:39,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:39,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:39,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:39,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:39,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:39,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:39,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:39,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-10-20 01:41:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:39,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:39,789 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1202040542, now seen corresponding path program 1 times [2020-10-20 01:41:39,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905428128] [2020-10-20 01:41:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,095 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 01:41:40,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905428128] [2020-10-20 01:41:40,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:40,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131978401] [2020-10-20 01:41:40,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:40,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:40,124 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2020-10-20 01:41:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,171 INFO L93 Difference]: Finished difference Result 157 states and 236 transitions. [2020-10-20 01:41:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:40,173 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,183 INFO L225 Difference]: With dead ends: 157 [2020-10-20 01:41:40,183 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 01:41:40,187 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 01:41:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 01:41:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-20 01:41:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 01:41:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-10-20 01:41:40,259 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-10-20 01:41:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,260 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-10-20 01:41:40,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-10-20 01:41:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:40,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,263 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 01:41:40,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:40,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash 155283645, now seen corresponding path program 1 times [2020-10-20 01:41:40,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013360582] [2020-10-20 01:41:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,400 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 01:41:40,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013360582] [2020-10-20 01:41:40,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:40,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209953134] [2020-10-20 01:41:40,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:40,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:40,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,403 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2020-10-20 01:41:40,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,415 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-10-20 01:41:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:40,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,417 INFO L225 Difference]: With dead ends: 76 [2020-10-20 01:41:40,417 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 01:41:40,418 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 01:41:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 01:41:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 01:41:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 01:41:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-10-20 01:41:40,424 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-10-20 01:41:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,424 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-20 01:41:40,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-10-20 01:41:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:40,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,426 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 01:41:40,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:40,426 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2020-10-20 01:41:40,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144566308] [2020-10-20 01:41:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,573 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 01:41:40,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144566308] [2020-10-20 01:41:40,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:40,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006380101] [2020-10-20 01:41:40,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:40,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:40,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:40,576 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 5 states. [2020-10-20 01:41:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,644 INFO L93 Difference]: Finished difference Result 89 states and 130 transitions. [2020-10-20 01:41:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:40,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 01:41:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,647 INFO L225 Difference]: With dead ends: 89 [2020-10-20 01:41:40,647 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 01:41:40,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:41:40,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 01:41:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-20 01:41:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 01:41:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2020-10-20 01:41:40,663 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2020-10-20 01:41:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,664 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-10-20 01:41:40,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2020-10-20 01:41:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:41:40,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,666 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 01:41:40,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:40,667 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2020-10-20 01:41:40,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176469035] [2020-10-20 01:41:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,778 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 01:41:40,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176469035] [2020-10-20 01:41:40,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:40,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359425750] [2020-10-20 01:41:40,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:40,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,780 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 3 states. [2020-10-20 01:41:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,830 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2020-10-20 01:41:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:40,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-20 01:41:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,832 INFO L225 Difference]: With dead ends: 125 [2020-10-20 01:41:40,832 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 01:41:40,833 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 01:41:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 01:41:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-20 01:41:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 01:41:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-10-20 01:41:40,843 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2020-10-20 01:41:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,844 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-10-20 01:41:40,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-10-20 01:41:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:40,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,846 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 01:41:40,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:40,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2020-10-20 01:41:40,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188533377] [2020-10-20 01:41:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,918 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 01:41:40,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188533377] [2020-10-20 01:41:40,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:40,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44784401] [2020-10-20 01:41:40,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:40,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:40,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:40,921 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 5 states. [2020-10-20 01:41:41,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,025 INFO L93 Difference]: Finished difference Result 354 states and 517 transitions. [2020-10-20 01:41:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:41,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,029 INFO L225 Difference]: With dead ends: 354 [2020-10-20 01:41:41,030 INFO L226 Difference]: Without dead ends: 286 [2020-10-20 01:41:41,031 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 01:41:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-20 01:41:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 134. [2020-10-20 01:41:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-20 01:41:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 188 transitions. [2020-10-20 01:41:41,056 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 188 transitions. Word has length 25 [2020-10-20 01:41:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,057 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 188 transitions. [2020-10-20 01:41:41,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 188 transitions. [2020-10-20 01:41:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:41,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,059 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 01:41:41,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:41,059 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 740712497, now seen corresponding path program 1 times [2020-10-20 01:41:41,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522123966] [2020-10-20 01:41:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,130 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 01:41:41,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522123966] [2020-10-20 01:41:41,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:41,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303070686] [2020-10-20 01:41:41,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:41,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:41,135 INFO L87 Difference]: Start difference. First operand 134 states and 188 transitions. Second operand 5 states. [2020-10-20 01:41:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,283 INFO L93 Difference]: Finished difference Result 368 states and 521 transitions. [2020-10-20 01:41:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:41,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,287 INFO L225 Difference]: With dead ends: 368 [2020-10-20 01:41:41,287 INFO L226 Difference]: Without dead ends: 366 [2020-10-20 01:41:41,288 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 01:41:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-20 01:41:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 134. [2020-10-20 01:41:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-20 01:41:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2020-10-20 01:41:41,308 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 26 [2020-10-20 01:41:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,308 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2020-10-20 01:41:41,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2020-10-20 01:41:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:41,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:41,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:41,311 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2030628178, now seen corresponding path program 1 times [2020-10-20 01:41:41,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084819647] [2020-10-20 01:41:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,390 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 01:41:41,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084819647] [2020-10-20 01:41:41,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:41,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134695851] [2020-10-20 01:41:41,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:41,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:41,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:41,393 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 5 states. [2020-10-20 01:41:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,448 INFO L93 Difference]: Finished difference Result 398 states and 551 transitions. [2020-10-20 01:41:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:41,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:41:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,451 INFO L225 Difference]: With dead ends: 398 [2020-10-20 01:41:41,451 INFO L226 Difference]: Without dead ends: 270 [2020-10-20 01:41:41,452 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 01:41:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-20 01:41:41,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 140. [2020-10-20 01:41:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-20 01:41:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2020-10-20 01:41:41,470 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 30 [2020-10-20 01:41:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,471 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2020-10-20 01:41:41,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2020-10-20 01:41:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:41,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:41,473 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1637601168, now seen corresponding path program 1 times [2020-10-20 01:41:41,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890948754] [2020-10-20 01:41:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,535 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 01:41:41,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890948754] [2020-10-20 01:41:41,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:41,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552615025] [2020-10-20 01:41:41,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:41:41,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:41:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:41:41,537 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand 4 states. [2020-10-20 01:41:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,575 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2020-10-20 01:41:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:41:41,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-20 01:41:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,577 INFO L225 Difference]: With dead ends: 358 [2020-10-20 01:41:41,577 INFO L226 Difference]: Without dead ends: 224 [2020-10-20 01:41:41,578 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 01:41:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-20 01:41:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2020-10-20 01:41:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 01:41:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 196 transitions. [2020-10-20 01:41:41,593 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 196 transitions. Word has length 30 [2020-10-20 01:41:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,594 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 196 transitions. [2020-10-20 01:41:41,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:41:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 196 transitions. [2020-10-20 01:41:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:41,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:41,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:41,596 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1895766606, now seen corresponding path program 1 times [2020-10-20 01:41:41,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890818493] [2020-10-20 01:41:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:41,663 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 01:41:41,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890818493] [2020-10-20 01:41:41,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:41,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:41,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832662967] [2020-10-20 01:41:41,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:41,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:41,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:41,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:41,666 INFO L87 Difference]: Start difference. First operand 144 states and 196 transitions. Second operand 3 states. [2020-10-20 01:41:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:41,701 INFO L93 Difference]: Finished difference Result 368 states and 500 transitions. [2020-10-20 01:41:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:41,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-20 01:41:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:41,704 INFO L225 Difference]: With dead ends: 368 [2020-10-20 01:41:41,704 INFO L226 Difference]: Without dead ends: 230 [2020-10-20 01:41:41,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-20 01:41:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-20 01:41:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-20 01:41:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 304 transitions. [2020-10-20 01:41:41,729 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 304 transitions. Word has length 30 [2020-10-20 01:41:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:41,729 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 304 transitions. [2020-10-20 01:41:41,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 304 transitions. [2020-10-20 01:41:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:41,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:41,731 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 01:41:41,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:41,732 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:41,733 INFO L82 PathProgramCache]: Analyzing trace with hash -112049588, now seen corresponding path program 1 times [2020-10-20 01:41:41,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:41,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56958529] [2020-10-20 01:41:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:41,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:41,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:41,909 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:41,910 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:41,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:42,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:42 BoogieIcfgContainer [2020-10-20 01:41:42,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:42,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:42,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:42,016 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:42,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:39" (3/4) ... [2020-10-20 01:41:42,023 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:42,163 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:42,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:42,166 INFO L168 Benchmark]: Toolchain (without parser) took 4295.23 ms. Allocated memory was 40.4 MB in the beginning and 67.6 MB in the end (delta: 27.3 MB). Free memory was 17.4 MB in the beginning and 45.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 32.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,167 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 30.4 MB. Free memory was 6.5 MB in the beginning and 6.4 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.67 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 16.5 MB in the beginning and 20.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.03 ms. Allocated memory is still 42.5 MB. Free memory was 20.7 MB in the beginning and 17.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,168 INFO L168 Benchmark]: Boogie Preprocessor took 45.34 ms. Allocated memory is still 42.5 MB. Free memory was 17.6 MB in the beginning and 15.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,169 INFO L168 Benchmark]: RCFGBuilder took 1058.62 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 15.0 MB in the beginning and 14.6 MB in the end (delta: 361.7 kB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,170 INFO L168 Benchmark]: TraceAbstraction took 2340.79 ms. Allocated memory was 45.1 MB in the beginning and 61.9 MB in the end (delta: 16.8 MB). Free memory was 14.3 MB in the beginning and 20.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,170 INFO L168 Benchmark]: Witness Printer took 148.58 ms. Allocated memory was 61.9 MB in the beginning and 67.6 MB in the end (delta: 5.8 MB). Free memory was 20.4 MB in the beginning and 45.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:42,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 30.4 MB. Free memory was 6.5 MB in the beginning and 6.4 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 615.67 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 16.5 MB in the beginning and 20.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 75.03 ms. Allocated memory is still 42.5 MB. Free memory was 20.7 MB in the beginning and 17.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 45.34 ms. Allocated memory is still 42.5 MB. Free memory was 17.6 MB in the beginning and 15.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1058.62 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 15.0 MB in the beginning and 14.6 MB in the end (delta: 361.7 kB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2340.79 ms. Allocated memory was 45.1 MB in the beginning and 61.9 MB in the end (delta: 16.8 MB). Free memory was 14.3 MB in the beginning and 20.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. * Witness Printer took 148.58 ms. Allocated memory was 61.9 MB in the beginning and 67.6 MB in the end (delta: 5.8 MB). Free memory was 20.4 MB in the beginning and 45.1 MB in the end (delta: -24.7 MB). Peak memory consumption was 14.0 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: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L241] int waterLevel = 1; [L242] int methaneLevelCritical = 0; [L612] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L835] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L908] int retValue_acc ; [L909] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] int splverifierCounter ; [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L341] int tmp___2 ; [L344] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L346] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L348] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L354] tmp = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] COND TRUE waterLevel < 2 [L260] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L364] tmp___0 = __VERIFIER_nondet_int() [L366] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L271] COND FALSE !(\read(methaneLevelCritical)) [L274] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L374] tmp___2 = __VERIFIER_nondet_int() [L376] COND TRUE \read(tmp___2) [L233] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L70] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L77] COND TRUE \read(systemActive) [L99] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] COND TRUE ! pumpRunning [L196] int retValue_acc ; [L197] int tmp ; [L198] int tmp___0 ; [L321] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L324] COND FALSE !(waterLevel < 2) [L328] retValue_acc = 0 [L329] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L202] tmp = isHighWaterSensorDry() [L204] COND FALSE !(\read(tmp)) [L207] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L209] retValue_acc = tmp___0 [L210] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L104] tmp = isHighWaterLevel() [L106] COND TRUE \read(tmp) [L127] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L810] int tmp ; [L811] int tmp___0 ; [L280] int retValue_acc ; [L283] retValue_acc = methaneLevelCritical [L284] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L815] tmp = isMethaneLevelCritical() [L817] COND TRUE \read(tmp) [L151] int retValue_acc ; [L154] retValue_acc = pumpRunning [L155] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L819] tmp___0 = isPumpRunning() [L821] 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_product36.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, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 626 SDtfs, 870 SDslu, 848 SDs, 0 SdLazy, 109 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred 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, 600 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 9650 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...