./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product43.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 b6d6d35826c479e1a93aed1cd13f45357e90f885 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-5485861 [2020-10-25 23:07:33,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:07:33,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:07:33,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:07:33,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:07:33,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:07:33,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:07:33,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:07:33,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:07:33,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:07:33,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:07:33,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:07:33,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:07:33,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:07:34,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:07:34,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:07:34,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:07:34,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:07:34,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:07:34,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:07:34,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:07:34,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:07:34,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:07:34,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:07:34,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:07:34,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:07:34,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:07:34,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:07:34,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:07:34,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:07:34,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:07:34,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:07:34,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:07:34,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:07:34,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:07:34,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:07:34,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:07:34,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:07:34,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:07:34,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:07:34,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:07:34,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:07:34,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:07:34,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:07:34,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:07:34,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:07:34,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:07:34,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:07:34,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:07:34,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:07:34,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:07:34,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:07:34,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:07:34,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:07:34,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:07:34,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:07:34,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:07:34,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:07:34,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:07:34,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:07:34,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:07:34,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:07:34,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:07:34,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:07:34,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:07:34,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:07:34,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:07:34,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:07:34,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:07:34,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:07:34,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:07:34,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6d6d35826c479e1a93aed1cd13f45357e90f885 [2020-10-25 23:07:34,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:07:34,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:07:34,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:07:34,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:07:34,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:07:34,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2020-10-25 23:07:34,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/defee12e1/9da28654a1614ffebd9a58ea5cc12f0f/FLAG3db45518c [2020-10-25 23:07:35,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:07:35,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2020-10-25 23:07:35,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/defee12e1/9da28654a1614ffebd9a58ea5cc12f0f/FLAG3db45518c [2020-10-25 23:07:35,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/defee12e1/9da28654a1614ffebd9a58ea5cc12f0f [2020-10-25 23:07:35,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:07:35,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:07:35,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:07:35,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:07:35,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:07:35,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:07:35" (1/1) ... [2020-10-25 23:07:35,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603e1426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:35, skipping insertion in model container [2020-10-25 23:07:35,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:07:35" (1/1) ... [2020-10-25 23:07:35,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:07:35,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:07:36,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:07:36,131 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:07:36,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:07:36,323 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:07:36,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36 WrapperNode [2020-10-25 23:07:36,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:07:36,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:07:36,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:07:36,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:07:36,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:07:36,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:07:36,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:07:36,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:07:36,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:07:36,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:07:36,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:07:36,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:07:36,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (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 [2020-10-25 23:07:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:07:36,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:07:36,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:07:36,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:07:37,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:07:37,526 INFO L298 CfgBuilder]: Removed 124 assume(true) statements. [2020-10-25 23:07:37,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:37 BoogieIcfgContainer [2020-10-25 23:07:37,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:07:37,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:07:37,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:07:37,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:07:37,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:07:35" (1/3) ... [2020-10-25 23:07:37,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1389d4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:07:37, skipping insertion in model container [2020-10-25 23:07:37,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (2/3) ... [2020-10-25 23:07:37,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1389d4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:07:37, skipping insertion in model container [2020-10-25 23:07:37,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:37" (3/3) ... [2020-10-25 23:07:37,537 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-10-25 23:07:37,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:07:37,555 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 23:07:37,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 23:07:37,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:07:37,600 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:07:37,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:07:37,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:07:37,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:07:37,601 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:07:37,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:07:37,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:07:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-10-25 23:07:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 23:07:37,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:37,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:37,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1660407341, now seen corresponding path program 1 times [2020-10-25 23:07:37,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:37,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998938857] [2020-10-25 23:07:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:37,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998938857] [2020-10-25 23:07:37,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:37,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:37,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571222110] [2020-10-25 23:07:37,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 23:07:37,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 23:07:38,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:07:38,008 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2020-10-25 23:07:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:38,044 INFO L93 Difference]: Finished difference Result 175 states and 260 transitions. [2020-10-25 23:07:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 23:07:38,045 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-25 23:07:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:38,064 INFO L225 Difference]: With dead ends: 175 [2020-10-25 23:07:38,065 INFO L226 Difference]: Without dead ends: 85 [2020-10-25 23:07:38,079 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 [2020-10-25 23:07:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-25 23:07:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-25 23:07:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-25 23:07:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2020-10-25 23:07:38,124 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2020-10-25 23:07:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:38,124 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2020-10-25 23:07:38,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 23:07:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2020-10-25 23:07:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:07:38,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:38,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:07:38,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1587803058, now seen corresponding path program 1 times [2020-10-25 23:07:38,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41597638] [2020-10-25 23:07:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41597638] [2020-10-25 23:07:38,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:38,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613215272] [2020-10-25 23:07:38,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:38,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:38,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:38,266 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 3 states. [2020-10-25 23:07:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:38,280 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2020-10-25 23:07:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:38,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 23:07:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:38,282 INFO L225 Difference]: With dead ends: 85 [2020-10-25 23:07:38,282 INFO L226 Difference]: Without dead ends: 39 [2020-10-25 23:07:38,283 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 [2020-10-25 23:07:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-25 23:07:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-25 23:07:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-25 23:07:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-10-25 23:07:38,290 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2020-10-25 23:07:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:38,291 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-10-25 23:07:38,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-10-25 23:07:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 23:07:38,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,292 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] [2020-10-25 23:07:38,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:07:38,293 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,294 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2020-10-25 23:07:38,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857543943] [2020-10-25 23:07:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857543943] [2020-10-25 23:07:38,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:38,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172788718] [2020-10-25 23:07:38,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:38,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:38,386 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-10-25 23:07:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:38,406 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2020-10-25 23:07:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:38,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 23:07:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:38,409 INFO L225 Difference]: With dead ends: 105 [2020-10-25 23:07:38,409 INFO L226 Difference]: Without dead ends: 72 [2020-10-25 23:07:38,410 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 [2020-10-25 23:07:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-25 23:07:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-25 23:07:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-25 23:07:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2020-10-25 23:07:38,422 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2020-10-25 23:07:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:38,422 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2020-10-25 23:07:38,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2020-10-25 23:07:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 23:07:38,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:38,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 23:07:38,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2020-10-25 23:07:38,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330975549] [2020-10-25 23:07:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330975549] [2020-10-25 23:07:38,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:38,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474601889] [2020-10-25 23:07:38,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:38,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:38,529 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand 3 states. [2020-10-25 23:07:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:38,567 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2020-10-25 23:07:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:38,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-25 23:07:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:38,570 INFO L225 Difference]: With dead ends: 171 [2020-10-25 23:07:38,570 INFO L226 Difference]: Without dead ends: 109 [2020-10-25 23:07:38,571 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 [2020-10-25 23:07:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-25 23:07:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-10-25 23:07:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-25 23:07:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2020-10-25 23:07:38,587 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2020-10-25 23:07:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:38,587 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2020-10-25 23:07:38,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2020-10-25 23:07:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 23:07:38,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,589 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] [2020-10-25 23:07:38,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 23:07:38,590 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2020-10-25 23:07:38,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276636540] [2020-10-25 23:07:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276636540] [2020-10-25 23:07:38,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:38,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100319846] [2020-10-25 23:07:38,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:38,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:38,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:38,675 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand 5 states. [2020-10-25 23:07:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:38,797 INFO L93 Difference]: Finished difference Result 399 states and 585 transitions. [2020-10-25 23:07:38,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:38,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-25 23:07:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:38,802 INFO L225 Difference]: With dead ends: 399 [2020-10-25 23:07:38,802 INFO L226 Difference]: Without dead ends: 298 [2020-10-25 23:07:38,804 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 [2020-10-25 23:07:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-25 23:07:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2020-10-25 23:07:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-25 23:07:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2020-10-25 23:07:38,833 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 25 [2020-10-25 23:07:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:38,834 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2020-10-25 23:07:38,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2020-10-25 23:07:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 23:07:38,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,836 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, 1] [2020-10-25 23:07:38,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 23:07:38,837 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1495173652, now seen corresponding path program 1 times [2020-10-25 23:07:38,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375658402] [2020-10-25 23:07:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375658402] [2020-10-25 23:07:38,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:38,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561731700] [2020-10-25 23:07:38,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:38,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:38,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:38,976 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand 5 states. [2020-10-25 23:07:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,115 INFO L93 Difference]: Finished difference Result 398 states and 570 transitions. [2020-10-25 23:07:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 23:07:39,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-25 23:07:39,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,118 INFO L225 Difference]: With dead ends: 398 [2020-10-25 23:07:39,119 INFO L226 Difference]: Without dead ends: 396 [2020-10-25 23:07:39,119 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 [2020-10-25 23:07:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-25 23:07:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 194. [2020-10-25 23:07:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-25 23:07:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2020-10-25 23:07:39,150 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 26 [2020-10-25 23:07:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,150 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2020-10-25 23:07:39,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2020-10-25 23:07:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-25 23:07:39,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,153 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] [2020-10-25 23:07:39,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 23:07:39,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1499969411, now seen corresponding path program 1 times [2020-10-25 23:07:39,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714199423] [2020-10-25 23:07:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714199423] [2020-10-25 23:07:39,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:39,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490382549] [2020-10-25 23:07:39,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:39,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:39,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:39,269 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 4 states. [2020-10-25 23:07:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,423 INFO L93 Difference]: Finished difference Result 392 states and 557 transitions. [2020-10-25 23:07:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 23:07:39,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-25 23:07:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,427 INFO L225 Difference]: With dead ends: 392 [2020-10-25 23:07:39,427 INFO L226 Difference]: Without dead ends: 291 [2020-10-25 23:07:39,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-25 23:07:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2020-10-25 23:07:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-25 23:07:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 399 transitions. [2020-10-25 23:07:39,450 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 399 transitions. Word has length 33 [2020-10-25 23:07:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,456 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 399 transitions. [2020-10-25 23:07:39,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 399 transitions. [2020-10-25 23:07:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-25 23:07:39,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,459 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] [2020-10-25 23:07:39,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 23:07:39,459 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1515134207, now seen corresponding path program 1 times [2020-10-25 23:07:39,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956318416] [2020-10-25 23:07:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956318416] [2020-10-25 23:07:39,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:39,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284441416] [2020-10-25 23:07:39,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:39,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:39,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:39,514 INFO L87 Difference]: Start difference. First operand 287 states and 399 transitions. Second operand 4 states. [2020-10-25 23:07:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,577 INFO L93 Difference]: Finished difference Result 817 states and 1156 transitions. [2020-10-25 23:07:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:07:39,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-25 23:07:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,582 INFO L225 Difference]: With dead ends: 817 [2020-10-25 23:07:39,582 INFO L226 Difference]: Without dead ends: 621 [2020-10-25 23:07:39,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-25 23:07:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 287. [2020-10-25 23:07:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-25 23:07:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2020-10-25 23:07:39,611 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 33 [2020-10-25 23:07:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,611 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2020-10-25 23:07:39,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2020-10-25 23:07:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-25 23:07:39,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,613 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] [2020-10-25 23:07:39,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 23:07:39,614 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash 928328193, now seen corresponding path program 1 times [2020-10-25 23:07:39,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522397549] [2020-10-25 23:07:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522397549] [2020-10-25 23:07:39,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:39,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788694924] [2020-10-25 23:07:39,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:39,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:39,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:39,697 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand 5 states. [2020-10-25 23:07:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,850 INFO L93 Difference]: Finished difference Result 609 states and 854 transitions. [2020-10-25 23:07:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:39,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-25 23:07:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,854 INFO L225 Difference]: With dead ends: 609 [2020-10-25 23:07:39,854 INFO L226 Difference]: Without dead ends: 413 [2020-10-25 23:07:39,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-25 23:07:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 318. [2020-10-25 23:07:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-25 23:07:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2020-10-25 23:07:39,887 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 33 [2020-10-25 23:07:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,888 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2020-10-25 23:07:39,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2020-10-25 23:07:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-25 23:07:39,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:39,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 23:07:39,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1797792970, now seen corresponding path program 1 times [2020-10-25 23:07:39,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379694656] [2020-10-25 23:07:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 23:07:39,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379694656] [2020-10-25 23:07:39,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:39,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619045281] [2020-10-25 23:07:39,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:39,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:39,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:39,965 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand 5 states. [2020-10-25 23:07:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:40,066 INFO L93 Difference]: Finished difference Result 902 states and 1251 transitions. [2020-10-25 23:07:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:40,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-25 23:07:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:40,071 INFO L225 Difference]: With dead ends: 902 [2020-10-25 23:07:40,071 INFO L226 Difference]: Without dead ends: 590 [2020-10-25 23:07:40,072 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 [2020-10-25 23:07:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-25 23:07:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 330. [2020-10-25 23:07:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-25 23:07:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 455 transitions. [2020-10-25 23:07:40,107 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 455 transitions. Word has length 47 [2020-10-25 23:07:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:40,108 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 455 transitions. [2020-10-25 23:07:40,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 455 transitions. [2020-10-25 23:07:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-25 23:07:40,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:40,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:40,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 23:07:40,111 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1987701236, now seen corresponding path program 1 times [2020-10-25 23:07:40,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:40,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946810844] [2020-10-25 23:07:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 23:07:40,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946810844] [2020-10-25 23:07:40,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:40,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:40,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334178019] [2020-10-25 23:07:40,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:40,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:40,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:40,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:40,177 INFO L87 Difference]: Start difference. First operand 330 states and 455 transitions. Second operand 5 states. [2020-10-25 23:07:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:40,289 INFO L93 Difference]: Finished difference Result 713 states and 973 transitions. [2020-10-25 23:07:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:07:40,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-25 23:07:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:40,292 INFO L225 Difference]: With dead ends: 713 [2020-10-25 23:07:40,292 INFO L226 Difference]: Without dead ends: 389 [2020-10-25 23:07:40,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-25 23:07:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 261. [2020-10-25 23:07:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-25 23:07:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2020-10-25 23:07:40,322 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 47 [2020-10-25 23:07:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:40,323 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2020-10-25 23:07:40,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2020-10-25 23:07:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-25 23:07:40,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:40,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:40,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 23:07:40,325 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:40,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2112793356, now seen corresponding path program 1 times [2020-10-25 23:07:40,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:40,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438088746] [2020-10-25 23:07:40,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:40,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438088746] [2020-10-25 23:07:40,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104205022] [2020-10-25 23:07:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:07:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 23:07:40,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:07:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:40,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:07:40,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-25 23:07:40,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104283288] [2020-10-25 23:07:40,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:40,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:40,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:40,620 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand 6 states. [2020-10-25 23:07:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:40,895 INFO L93 Difference]: Finished difference Result 735 states and 1011 transitions. [2020-10-25 23:07:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 23:07:40,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-25 23:07:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:40,900 INFO L225 Difference]: With dead ends: 735 [2020-10-25 23:07:40,900 INFO L226 Difference]: Without dead ends: 534 [2020-10-25 23:07:40,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-25 23:07:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-10-25 23:07:40,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 321. [2020-10-25 23:07:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-25 23:07:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 433 transitions. [2020-10-25 23:07:40,955 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 433 transitions. Word has length 48 [2020-10-25 23:07:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:40,956 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 433 transitions. [2020-10-25 23:07:40,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 433 transitions. [2020-10-25 23:07:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-25 23:07:40,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:40,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:41,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-25 23:07:41,172 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:41,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:41,173 INFO L82 PathProgramCache]: Analyzing trace with hash -206469727, now seen corresponding path program 2 times [2020-10-25 23:07:41,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:41,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499500754] [2020-10-25 23:07:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:07:41,245 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:07:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:07:41,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:07:41,374 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:07:41,377 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:07:41,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 23:07:41,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:07:41 BoogieIcfgContainer [2020-10-25 23:07:41,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:07:41,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:07:41,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:07:41,530 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:07:41,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:37" (3/4) ... [2020-10-25 23:07:41,536 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:07:41,745 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:07:41,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:07:41,748 INFO L168 Benchmark]: Toolchain (without parser) took 6051.88 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 30.6 MB in the beginning and 73.2 MB in the end (delta: -42.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:41,749 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 41.9 MB. Free memory was 20.0 MB in the beginning and 20.0 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:07:41,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.26 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 35.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:41,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.14 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 31.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:41,750 INFO L168 Benchmark]: Boogie Preprocessor took 47.03 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 29.4 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:07:41,751 INFO L168 Benchmark]: RCFGBuilder took 1068.24 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 31.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:41,751 INFO L168 Benchmark]: TraceAbstraction took 4000.36 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 31.2 MB in the beginning and 23.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:41,752 INFO L168 Benchmark]: Witness Printer took 215.63 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 23.7 MB in the beginning and 73.2 MB in the end (delta: -49.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:41,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 41.9 MB. Free memory was 20.0 MB in the beginning and 20.0 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 622.26 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 35.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.14 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 31.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.03 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 29.4 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1068.24 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 31.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4000.36 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 31.2 MB in the beginning and 23.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Witness Printer took 215.63 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 23.7 MB in the beginning and 73.2 MB in the end (delta: -49.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 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: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L417] int waterLevel = 1; [L418] int methaneLevelCritical = 0; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L537] int retValue_acc ; [L540] retValue_acc = 1 [L541] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L435] COND TRUE waterLevel < 2 [L436] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] COND TRUE ! pumpRunning [L274] int retValue_acc ; [L275] int tmp ; [L276] int tmp___0 ; [L497] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(waterLevel < 2) [L504] retValue_acc = 0 [L505] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L280] tmp = isHighWaterSensorDry() [L282] COND FALSE !(\read(tmp)) [L285] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] retValue_acc = tmp___0 [L288] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] tmp = isHighWaterLevel() [L166] COND TRUE \read(tmp) [L193] int tmp ; [L218] int retValue_acc ; [L456] int retValue_acc ; [L459] retValue_acc = methaneLevelCritical [L460] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L222] retValue_acc = isMethaneLevelCritical() [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isMethaneAlarm() [L199] COND FALSE !(\read(tmp)) [L187] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L918] tmp = getWaterLevel() [L920] COND TRUE tmp == 0 [L229] int retValue_acc ; [L232] retValue_acc = pumpRunning [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L922] tmp___0 = isPumpRunning() [L924] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product43.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1093 SDtfs, 1259 SDslu, 1592 SDs, 0 SdLazy, 235 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1346 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 481 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 26739 SizeOfPredicates, 4 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 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...