./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product64.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_spec3_product64.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 0c75cc0efa833cee2ae88b3635c1f8807d970760 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:43:40,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:43:40,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:43:40,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:43:40,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:43:40,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:43:40,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:43:40,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:43:40,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:43:40,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:43:40,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:43:40,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:43:40,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:43:40,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:43:40,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:43:40,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:43:40,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:43:40,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:43:40,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:43:40,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:43:40,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:43:40,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:43:40,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:43:40,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:43:40,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:43:40,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:43:40,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:43:40,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:43:40,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:43:40,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:43:40,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:43:40,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:43:40,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:43:40,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:43:40,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:43:40,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:43:40,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:43:40,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:43:40,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:43:40,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:43:40,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:43:40,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:43:40,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:43:40,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:43:40,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:43:40,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:43:40,564 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:43:40,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:43:40,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:43:40,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:43:40,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:43:40,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:43:40,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:43:40,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:43:40,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:43:40,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:43:40,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:43:40,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:43:40,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:43:40,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:43:40,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:43:40,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:43:40,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:43:40,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:43:40,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:43:40,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:43:40,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:43:40,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:43:40,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:43:40,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:43:40,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:43:40,568 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 -> 0c75cc0efa833cee2ae88b3635c1f8807d970760 [2020-10-20 01:43:40,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:43:40,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:43:40,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:43:40,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:43:40,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:43:40,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2020-10-20 01:43:40,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43693afb/e8e05108d34e46d2a5f5c351bbac9d72/FLAGf67eb05c8 [2020-10-20 01:43:41,473 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:43:41,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2020-10-20 01:43:41,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43693afb/e8e05108d34e46d2a5f5c351bbac9d72/FLAGf67eb05c8 [2020-10-20 01:43:41,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43693afb/e8e05108d34e46d2a5f5c351bbac9d72 [2020-10-20 01:43:41,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:43:41,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:43:41,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:41,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:43:41,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:43:41,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:41" (1/1) ... [2020-10-20 01:43:41,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1009f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:41, skipping insertion in model container [2020-10-20 01:43:41,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:41" (1/1) ... [2020-10-20 01:43:41,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:43:41,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:43:42,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:42,223 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:43:42,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:42,388 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:43:42,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42 WrapperNode [2020-10-20 01:43:42,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:42,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:42,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:43:42,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:43:42,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:42,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:43:42,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:43:42,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:43:42,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (1/1) ... [2020-10-20 01:43:42,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:43:42,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:43:42,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:43:42,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:43:42,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (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 01:43:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:43:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:43:42,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:43:42,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:43:44,005 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:43:44,006 INFO L298 CfgBuilder]: Removed 366 assume(true) statements. [2020-10-20 01:43:44,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:44 BoogieIcfgContainer [2020-10-20 01:43:44,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:43:44,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:43:44,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:43:44,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:43:44,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:43:41" (1/3) ... [2020-10-20 01:43:44,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4123eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:44, skipping insertion in model container [2020-10-20 01:43:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:42" (2/3) ... [2020-10-20 01:43:44,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4123eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:44, skipping insertion in model container [2020-10-20 01:43:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:44" (3/3) ... [2020-10-20 01:43:44,017 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-10-20 01:43:44,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:43:44,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:43:44,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:43:44,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:43:44,077 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:43:44,077 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:43:44,077 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:43:44,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:43:44,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:43:44,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:43:44,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:43:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-10-20 01:43:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 01:43:44,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:44,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:43:44,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1225666969, now seen corresponding path program 1 times [2020-10-20 01:43:44,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:44,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887249895] [2020-10-20 01:43:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:44,383 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 01:43:44,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887249895] [2020-10-20 01:43:44,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:44,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:44,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390648197] [2020-10-20 01:43:44,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:43:44,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:43:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:43:44,413 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 2 states. [2020-10-20 01:43:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:44,474 INFO L93 Difference]: Finished difference Result 463 states and 692 transitions. [2020-10-20 01:43:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:43:44,477 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-20 01:43:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:44,497 INFO L225 Difference]: With dead ends: 463 [2020-10-20 01:43:44,497 INFO L226 Difference]: Without dead ends: 229 [2020-10-20 01:43:44,502 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 01:43:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-20 01:43:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-20 01:43:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-20 01:43:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2020-10-20 01:43:44,560 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 18 [2020-10-20 01:43:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:44,561 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2020-10-20 01:43:44,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:43:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2020-10-20 01:43:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 01:43:44,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:44,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:43:44,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:43:44,565 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash -329174554, now seen corresponding path program 1 times [2020-10-20 01:43:44,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:44,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357289093] [2020-10-20 01:43:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:44,712 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 01:43:44,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357289093] [2020-10-20 01:43:44,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:44,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:43:44,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166555024] [2020-10-20 01:43:44,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:44,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:44,716 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand 3 states. [2020-10-20 01:43:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:44,736 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2020-10-20 01:43:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:44,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 01:43:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:44,738 INFO L225 Difference]: With dead ends: 229 [2020-10-20 01:43:44,738 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 01:43:44,742 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 01:43:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 01:43:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-20 01:43:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 01:43:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2020-10-20 01:43:44,751 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 19 [2020-10-20 01:43:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:44,752 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2020-10-20 01:43:44,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2020-10-20 01:43:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:43:44,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:44,753 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 01:43:44,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:43:44,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:44,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1012740860, now seen corresponding path program 1 times [2020-10-20 01:43:44,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:44,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737210627] [2020-10-20 01:43:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:44,922 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 01:43:44,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737210627] [2020-10-20 01:43:44,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:44,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:43:44,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122456588] [2020-10-20 01:43:44,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:43:44,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:44,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:43:44,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:43:44,928 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand 5 states. [2020-10-20 01:43:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:45,056 INFO L93 Difference]: Finished difference Result 193 states and 285 transitions. [2020-10-20 01:43:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:43:45,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-20 01:43:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:45,058 INFO L225 Difference]: With dead ends: 193 [2020-10-20 01:43:45,059 INFO L226 Difference]: Without dead ends: 112 [2020-10-20 01:43:45,060 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 01:43:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-20 01:43:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2020-10-20 01:43:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 01:43:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 159 transitions. [2020-10-20 01:43:45,074 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 159 transitions. Word has length 24 [2020-10-20 01:43:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:45,075 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 159 transitions. [2020-10-20 01:43:45,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:43:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 159 transitions. [2020-10-20 01:43:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 01:43:45,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:45,077 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] [2020-10-20 01:43:45,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:43:45,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1198598115, now seen corresponding path program 1 times [2020-10-20 01:43:45,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:45,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789621761] [2020-10-20 01:43:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:45,170 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 01:43:45,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789621761] [2020-10-20 01:43:45,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:45,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:45,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625011967] [2020-10-20 01:43:45,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:45,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:45,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:45,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:45,173 INFO L87 Difference]: Start difference. First operand 108 states and 159 transitions. Second operand 3 states. [2020-10-20 01:43:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:45,226 INFO L93 Difference]: Finished difference Result 218 states and 323 transitions. [2020-10-20 01:43:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:45,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 01:43:45,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:45,228 INFO L225 Difference]: With dead ends: 218 [2020-10-20 01:43:45,229 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 01:43:45,230 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 01:43:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 01:43:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-20 01:43:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 01:43:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2020-10-20 01:43:45,242 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 27 [2020-10-20 01:43:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:45,242 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2020-10-20 01:43:45,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2020-10-20 01:43:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 01:43:45,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:45,244 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] [2020-10-20 01:43:45,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:43:45,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:45,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1576081447, now seen corresponding path program 1 times [2020-10-20 01:43:45,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:45,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857500886] [2020-10-20 01:43:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:45,327 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 01:43:45,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857500886] [2020-10-20 01:43:45,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:45,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:43:45,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401778761] [2020-10-20 01:43:45,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:43:45,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:45,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:43:45,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:43:45,329 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand 5 states. [2020-10-20 01:43:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:45,467 INFO L93 Difference]: Finished difference Result 578 states and 838 transitions. [2020-10-20 01:43:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:43:45,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-20 01:43:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:45,494 INFO L225 Difference]: With dead ends: 578 [2020-10-20 01:43:45,494 INFO L226 Difference]: Without dead ends: 470 [2020-10-20 01:43:45,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:43:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-20 01:43:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 183. [2020-10-20 01:43:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-20 01:43:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 255 transitions. [2020-10-20 01:43:45,516 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 255 transitions. Word has length 27 [2020-10-20 01:43:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:45,516 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 255 transitions. [2020-10-20 01:43:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:43:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 255 transitions. [2020-10-20 01:43:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 01:43:45,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:45,518 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] [2020-10-20 01:43:45,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:43:45,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1018622107, now seen corresponding path program 1 times [2020-10-20 01:43:45,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:45,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63078562] [2020-10-20 01:43:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:45,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:45,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:45,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:43:45,706 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:43:45,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:43:45,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:43:45 BoogieIcfgContainer [2020-10-20 01:43:45,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:43:45,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:43:45,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:43:45,839 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:43:45,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:44" (3/4) ... [2020-10-20 01:43:45,843 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:43:45,933 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:43:45,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:43:45,936 INFO L168 Benchmark]: Toolchain (without parser) took 4140.44 ms. Allocated memory was 41.4 MB in the beginning and 65.5 MB in the end (delta: 24.1 MB). Free memory was 19.0 MB in the beginning and 25.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,937 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.6 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.85 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 18.2 MB in the beginning and 23.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.83 ms. Allocated memory is still 43.5 MB. Free memory was 23.4 MB in the beginning and 17.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,939 INFO L168 Benchmark]: Boogie Preprocessor took 129.03 ms. Allocated memory is still 43.5 MB. Free memory was 17.1 MB in the beginning and 12.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,940 INFO L168 Benchmark]: RCFGBuilder took 1395.51 ms. Allocated memory was 43.5 MB in the beginning and 50.9 MB in the end (delta: 7.3 MB). Free memory was 12.5 MB in the beginning and 19.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,941 INFO L168 Benchmark]: TraceAbstraction took 1828.69 ms. Allocated memory was 50.9 MB in the beginning and 65.5 MB in the end (delta: 14.7 MB). Free memory was 19.1 MB in the beginning and 38.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,942 INFO L168 Benchmark]: Witness Printer took 94.66 ms. Allocated memory is still 65.5 MB. Free memory was 38.8 MB in the beginning and 25.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:45,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.6 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 587.85 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 18.2 MB in the beginning and 23.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 93.83 ms. Allocated memory is still 43.5 MB. Free memory was 23.4 MB in the beginning and 17.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 129.03 ms. Allocated memory is still 43.5 MB. Free memory was 17.1 MB in the beginning and 12.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1395.51 ms. Allocated memory was 43.5 MB in the beginning and 50.9 MB in the end (delta: 7.3 MB). Free memory was 12.5 MB in the beginning and 19.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1828.69 ms. Allocated memory was 50.9 MB in the beginning and 65.5 MB in the end (delta: 14.7 MB). Free memory was 19.1 MB in the beginning and 38.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. * Witness Printer took 94.66 ms. Allocated memory is still 65.5 MB. Free memory was 38.8 MB in the beginning and 25.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 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: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L429] int waterLevel = 1; [L430] int methaneLevelCritical = 0; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L898] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L971] int retValue_acc ; [L972] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L369] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L371] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L377] tmp = __VERIFIER_nondet_int() [L379] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L447] COND TRUE waterLevel < 2 [L448] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND FALSE !(\read(tmp___2)) [L405] tmp___1 = __VERIFIER_nondet_int() [L407] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L336] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L343] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L100] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L107] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1004] int tmp ; [L1005] int tmp___0 ; [L1006] int tmp___1 ; [L468] int retValue_acc ; [L471] retValue_acc = methaneLevelCritical [L472] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1010] tmp = isMethaneLevelCritical() [L1012] COND FALSE !(\read(tmp)) [L500] int retValue_acc ; [L503] retValue_acc = waterLevel [L504] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1016] tmp___0 = getWaterLevel() [L1018] COND TRUE tmp___0 == 2 [L250] int retValue_acc ; [L253] retValue_acc = pumpRunning [L254] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1020] tmp___1 = isPumpRunning() [L1022] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product64.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 236 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 867 SDtfs, 1013 SDslu, 517 SDs, 0 SdLazy, 75 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=0, 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, 5 MinimizatonAttempts, 293 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 4928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...