./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product56.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_product56.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 8d89cb30057b8721685c80693144eb2455c18c87 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:41:53,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:53,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:53,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:53,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:53,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:53,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:53,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:53,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:53,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:53,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:53,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:53,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:53,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:53,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:53,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:53,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:53,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:53,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:53,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:53,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:53,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:53,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:53,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:53,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:53,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:53,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:53,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:53,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:53,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:53,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:53,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:53,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:53,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:53,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:53,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:53,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:53,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:53,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:53,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:53,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:53,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:53,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:53,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:53,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:53,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:53,525 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:53,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:53,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:53,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:53,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:53,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:53,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:53,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:53,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:53,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:53,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:53,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:53,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:53,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:53,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:53,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:53,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:53,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:53,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:53,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:53,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:53,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:53,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:53,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:53,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:53,532 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 -> 8d89cb30057b8721685c80693144eb2455c18c87 [2020-10-20 01:41:53,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:53,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:53,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:53,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:53,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:53,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2020-10-20 01:41:53,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45cc5ff38/034e4d0a61c34c22b7b0ddfdbb448801/FLAG28eaf48d2 [2020-10-20 01:41:54,525 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:54,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2020-10-20 01:41:54,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45cc5ff38/034e4d0a61c34c22b7b0ddfdbb448801/FLAG28eaf48d2 [2020-10-20 01:41:54,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45cc5ff38/034e4d0a61c34c22b7b0ddfdbb448801 [2020-10-20 01:41:54,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:54,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:54,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:54,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:54,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:54,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:54" (1/1) ... [2020-10-20 01:41:54,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd8227f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:54, skipping insertion in model container [2020-10-20 01:41:54,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:54" (1/1) ... [2020-10-20 01:41:54,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:54,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:55,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:55,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:55,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:55,399 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:55,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55 WrapperNode [2020-10-20 01:41:55,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:55,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:55,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:55,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:55,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:55,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:55,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:55,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:55,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (1/1) ... [2020-10-20 01:41:55,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:55,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:55,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:55,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:55,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (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 01:41:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:56,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:56,900 INFO L298 CfgBuilder]: Removed 288 assume(true) statements. [2020-10-20 01:41:56,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:56 BoogieIcfgContainer [2020-10-20 01:41:56,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:56,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:56,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:56,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:56,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:54" (1/3) ... [2020-10-20 01:41:56,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae6cbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:56, skipping insertion in model container [2020-10-20 01:41:56,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:55" (2/3) ... [2020-10-20 01:41:56,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae6cbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:56, skipping insertion in model container [2020-10-20 01:41:56,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:56" (3/3) ... [2020-10-20 01:41:56,919 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-10-20 01:41:56,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:56,941 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:56,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:56,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:56,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:56,995 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:56,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:56,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:56,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:56,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:56,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-10-20 01:41:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:57,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:57,045 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 326185497, now seen corresponding path program 1 times [2020-10-20 01:41:57,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245289468] [2020-10-20 01:41:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,279 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 01:41:57,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245289468] [2020-10-20 01:41:57,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:57,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097309828] [2020-10-20 01:41:57,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:57,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:57,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:57,303 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 2 states. [2020-10-20 01:41:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,347 INFO L93 Difference]: Finished difference Result 379 states and 578 transitions. [2020-10-20 01:41:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:57,348 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,362 INFO L225 Difference]: With dead ends: 379 [2020-10-20 01:41:57,362 INFO L226 Difference]: Without dead ends: 187 [2020-10-20 01:41:57,366 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 01:41:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-20 01:41:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-20 01:41:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-20 01:41:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2020-10-20 01:41:57,443 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2020-10-20 01:41:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,443 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2020-10-20 01:41:57,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2020-10-20 01:41:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:57,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,445 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 01:41:57,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:57,446 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1699548539, now seen corresponding path program 1 times [2020-10-20 01:41:57,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90810010] [2020-10-20 01:41:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,576 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 01:41:57,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90810010] [2020-10-20 01:41:57,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:57,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28067641] [2020-10-20 01:41:57,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:57,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:57,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:57,580 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand 3 states. [2020-10-20 01:41:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,596 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2020-10-20 01:41:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:57,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,598 INFO L225 Difference]: With dead ends: 187 [2020-10-20 01:41:57,598 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 01:41:57,600 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 01:41:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 01:41:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-20 01:41:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-20 01:41:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2020-10-20 01:41:57,608 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2020-10-20 01:41:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,608 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2020-10-20 01:41:57,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2020-10-20 01:41:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:57,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,610 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 01:41:57,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:57,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1577730230, now seen corresponding path program 1 times [2020-10-20 01:41:57,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918449067] [2020-10-20 01:41:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,751 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 01:41:57,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918449067] [2020-10-20 01:41:57,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:57,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536192337] [2020-10-20 01:41:57,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:57,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:57,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:57,754 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 5 states. [2020-10-20 01:41:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,818 INFO L93 Difference]: Finished difference Result 163 states and 244 transitions. [2020-10-20 01:41:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:57,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 01:41:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,820 INFO L225 Difference]: With dead ends: 163 [2020-10-20 01:41:57,820 INFO L226 Difference]: Without dead ends: 96 [2020-10-20 01:41:57,821 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 01:41:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-20 01:41:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-10-20 01:41:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 01:41:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2020-10-20 01:41:57,833 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 22 [2020-10-20 01:41:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,834 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2020-10-20 01:41:57,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2020-10-20 01:41:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:57,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,836 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 01:41:57,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:57,837 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash 792163456, now seen corresponding path program 1 times [2020-10-20 01:41:57,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718708814] [2020-10-20 01:41:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,911 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 01:41:57,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718708814] [2020-10-20 01:41:57,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:57,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736000584] [2020-10-20 01:41:57,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:57,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:57,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:57,914 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand 3 states. [2020-10-20 01:41:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,966 INFO L93 Difference]: Finished difference Result 187 states and 280 transitions. [2020-10-20 01:41:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:57,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-20 01:41:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,968 INFO L225 Difference]: With dead ends: 187 [2020-10-20 01:41:57,968 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 01:41:57,969 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 01:41:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 01:41:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-20 01:41:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 01:41:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2020-10-20 01:41:57,983 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 25 [2020-10-20 01:41:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,983 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2020-10-20 01:41:57,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2020-10-20 01:41:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:57,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,985 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 01:41:57,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:57,985 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1022954699, now seen corresponding path program 1 times [2020-10-20 01:41:57,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985814232] [2020-10-20 01:41:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:58,089 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 01:41:58,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985814232] [2020-10-20 01:41:58,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:58,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:58,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346044390] [2020-10-20 01:41:58,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:58,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:58,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:58,106 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand 5 states. [2020-10-20 01:41:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:58,253 INFO L93 Difference]: Finished difference Result 485 states and 703 transitions. [2020-10-20 01:41:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:58,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:58,256 INFO L225 Difference]: With dead ends: 485 [2020-10-20 01:41:58,257 INFO L226 Difference]: Without dead ends: 392 [2020-10-20 01:41:58,258 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 01:41:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-20 01:41:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 184. [2020-10-20 01:41:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-20 01:41:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 260 transitions. [2020-10-20 01:41:58,283 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 260 transitions. Word has length 25 [2020-10-20 01:41:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:58,283 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 260 transitions. [2020-10-20 01:41:58,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 260 transitions. [2020-10-20 01:41:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:58,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:58,285 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 01:41:58,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:58,286 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash 819147605, now seen corresponding path program 1 times [2020-10-20 01:41:58,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:58,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308356378] [2020-10-20 01:41:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:58,371 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 01:41:58,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308356378] [2020-10-20 01:41:58,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:58,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:58,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147101601] [2020-10-20 01:41:58,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:58,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:58,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:58,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:58,374 INFO L87 Difference]: Start difference. First operand 184 states and 260 transitions. Second operand 5 states. [2020-10-20 01:41:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:58,566 INFO L93 Difference]: Finished difference Result 522 states and 741 transitions. [2020-10-20 01:41:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:58,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:58,571 INFO L225 Difference]: With dead ends: 522 [2020-10-20 01:41:58,571 INFO L226 Difference]: Without dead ends: 520 [2020-10-20 01:41:58,573 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 01:41:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-20 01:41:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 184. [2020-10-20 01:41:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-20 01:41:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 258 transitions. [2020-10-20 01:41:58,605 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 258 transitions. Word has length 26 [2020-10-20 01:41:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:58,608 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 258 transitions. [2020-10-20 01:41:58,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 258 transitions. [2020-10-20 01:41:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:58,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:58,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:58,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:58,615 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1010263109, now seen corresponding path program 1 times [2020-10-20 01:41:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:58,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987087087] [2020-10-20 01:41:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:58,733 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 01:41:58,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987087087] [2020-10-20 01:41:58,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:58,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:58,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375208128] [2020-10-20 01:41:58,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:58,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:58,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:58,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:58,736 INFO L87 Difference]: Start difference. First operand 184 states and 258 transitions. Second operand 5 states. [2020-10-20 01:41:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:58,843 INFO L93 Difference]: Finished difference Result 534 states and 740 transitions. [2020-10-20 01:41:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:58,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 01:41:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:58,847 INFO L225 Difference]: With dead ends: 534 [2020-10-20 01:41:58,847 INFO L226 Difference]: Without dead ends: 356 [2020-10-20 01:41:58,848 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 01:41:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-20 01:41:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 202. [2020-10-20 01:41:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 01:41:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 276 transitions. [2020-10-20 01:41:58,884 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 276 transitions. Word has length 32 [2020-10-20 01:41:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:58,885 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 276 transitions. [2020-10-20 01:41:58,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 276 transitions. [2020-10-20 01:41:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:58,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:58,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:58,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:58,887 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:58,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1403290119, now seen corresponding path program 1 times [2020-10-20 01:41:58,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:58,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113330525] [2020-10-20 01:41:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:58,940 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 01:41:58,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113330525] [2020-10-20 01:41:58,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:58,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:41:58,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520922637] [2020-10-20 01:41:58,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:41:58,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:58,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:41:58,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:41:58,943 INFO L87 Difference]: Start difference. First operand 202 states and 276 transitions. Second operand 6 states. [2020-10-20 01:41:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:59,075 INFO L93 Difference]: Finished difference Result 584 states and 790 transitions. [2020-10-20 01:41:59,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:41:59,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-20 01:41:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:59,078 INFO L225 Difference]: With dead ends: 584 [2020-10-20 01:41:59,079 INFO L226 Difference]: Without dead ends: 388 [2020-10-20 01:41:59,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:41:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-20 01:41:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 214. [2020-10-20 01:41:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-20 01:41:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 288 transitions. [2020-10-20 01:41:59,098 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 288 transitions. Word has length 32 [2020-10-20 01:41:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:59,099 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 288 transitions. [2020-10-20 01:41:59,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:41:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 288 transitions. [2020-10-20 01:41:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:59,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:59,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:59,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:59,100 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:59,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1145124681, now seen corresponding path program 1 times [2020-10-20 01:41:59,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:59,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131834710] [2020-10-20 01:41:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:59,140 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 01:41:59,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131834710] [2020-10-20 01:41:59,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:59,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:59,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993316521] [2020-10-20 01:41:59,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:59,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:59,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:59,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:59,142 INFO L87 Difference]: Start difference. First operand 214 states and 288 transitions. Second operand 3 states. [2020-10-20 01:41:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:59,207 INFO L93 Difference]: Finished difference Result 512 states and 688 transitions. [2020-10-20 01:41:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:59,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-20 01:41:59,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:59,209 INFO L225 Difference]: With dead ends: 512 [2020-10-20 01:41:59,209 INFO L226 Difference]: Without dead ends: 304 [2020-10-20 01:41:59,210 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 01:41:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-20 01:41:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-10-20 01:41:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-20 01:41:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 400 transitions. [2020-10-20 01:41:59,237 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 400 transitions. Word has length 32 [2020-10-20 01:41:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:59,238 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 400 transitions. [2020-10-20 01:41:59,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 400 transitions. [2020-10-20 01:41:59,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 01:41:59,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:59,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:59,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:59,239 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:59,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:59,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2078796085, now seen corresponding path program 1 times [2020-10-20 01:41:59,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:59,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724272849] [2020-10-20 01:41:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:59,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:59,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:59,401 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:59,401 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:59,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:59,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:59 BoogieIcfgContainer [2020-10-20 01:41:59,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:59,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:59,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:59,615 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:59,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:56" (3/4) ... [2020-10-20 01:41:59,618 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:59,710 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:59,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:59,713 INFO L168 Benchmark]: Toolchain (without parser) took 4886.12 ms. Allocated memory was 41.9 MB in the beginning and 77.1 MB in the end (delta: 35.1 MB). Free memory was 19.1 MB in the beginning and 29.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,713 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.97 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 18.1 MB in the beginning and 20.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.54 ms. Allocated memory is still 43.5 MB. Free memory was 20.3 MB in the beginning and 14.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,715 INFO L168 Benchmark]: Boogie Preprocessor took 68.07 ms. Allocated memory is still 43.5 MB. Free memory was 14.8 MB in the beginning and 10.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,716 INFO L168 Benchmark]: RCFGBuilder took 1319.59 ms. Allocated memory was 43.5 MB in the beginning and 48.8 MB in the end (delta: 5.2 MB). Free memory was 10.9 MB in the beginning and 16.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,717 INFO L168 Benchmark]: TraceAbstraction took 2706.78 ms. Allocated memory was 48.8 MB in the beginning and 77.1 MB in the end (delta: 28.3 MB). Free memory was 15.7 MB in the beginning and 45.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,717 INFO L168 Benchmark]: Witness Printer took 95.31 ms. Allocated memory is still 77.1 MB. Free memory was 45.3 MB in the beginning and 29.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:59,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 566.97 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 18.1 MB in the beginning and 20.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 115.54 ms. Allocated memory is still 43.5 MB. Free memory was 20.3 MB in the beginning and 14.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 68.07 ms. Allocated memory is still 43.5 MB. Free memory was 14.8 MB in the beginning and 10.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1319.59 ms. Allocated memory was 43.5 MB in the beginning and 48.8 MB in the end (delta: 5.2 MB). Free memory was 10.9 MB in the beginning and 16.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2706.78 ms. Allocated memory was 48.8 MB in the beginning and 77.1 MB in the end (delta: 28.3 MB). Free memory was 15.7 MB in the beginning and 45.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 14.3 GB. * Witness Printer took 95.31 ms. Allocated memory is still 77.1 MB. Free memory was 45.3 MB in the beginning and 29.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int pumpRunning = 0; [L493] int systemActive = 1; [L813] int cleanupTimeShifts = 4; [L910] int waterLevel = 1; [L911] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] int retValue_acc ; [L887] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L768] int retValue_acc ; [L771] retValue_acc = 1 [L772] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L893] tmp = valid_product() [L895] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L415] int splverifierCounter ; [L416] int tmp ; [L417] int tmp___0 ; [L418] int tmp___1 ; [L419] int tmp___2 ; [L422] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L426] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] tmp = __VERIFIER_nondet_int() [L434] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L928] COND TRUE waterLevel < 2 [L929] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L442] tmp___0 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L940] COND FALSE !(\read(methaneLevelCritical)) [L943] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L452] tmp___2 = __VERIFIER_nondet_int() [L454] COND TRUE \read(tmp___2) [L734] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L507] COND TRUE \read(systemActive) [L581] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND FALSE !(\read(pumpRunning)) [L555] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L558] COND FALSE !(\read(pumpRunning)) [L529] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] COND TRUE ! pumpRunning [L678] int retValue_acc ; [L679] int tmp ; [L680] int tmp___0 ; [L990] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L993] COND FALSE !(waterLevel < 2) [L997] retValue_acc = 0 [L998] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L684] tmp = isHighWaterSensorDry() [L686] COND FALSE !(\read(tmp)) [L689] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = tmp___0 [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L534] tmp = isHighWaterLevel() [L536] COND TRUE \read(tmp) [L609] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L779] int tmp ; [L780] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = methaneLevelCritical [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L784] tmp = isMethaneLevelCritical() [L786] COND TRUE \read(tmp) [L633] int retValue_acc ; [L636] retValue_acc = pumpRunning [L637] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L788] tmp___0 = isPumpRunning() [L790] 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_product56.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, 194 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1182 SDtfs, 1711 SDslu, 1365 SDs, 0 SdLazy, 207 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 878 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 10664 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...