./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45e9be5ff3d2c5f3e04037cd81f89ba3fcf7e541 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:24:49,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:24:49,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:24:49,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:24:49,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:24:49,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:24:49,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:24:49,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:24:49,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:24:49,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:24:49,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:24:49,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:24:49,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:24:49,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:24:49,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:24:49,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:24:49,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:24:49,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:24:49,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:24:49,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:24:49,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:24:49,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:24:49,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:24:49,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:24:49,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:24:49,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:24:49,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:24:49,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:24:49,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:24:49,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:24:49,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:24:49,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:24:49,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:24:49,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:24:49,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:24:49,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:24:49,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:24:49,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:24:49,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:24:49,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:24:49,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:24:49,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:24:49,066 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:24:49,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:24:49,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:24:49,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:24:49,067 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:24:49,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:24:49,067 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:24:49,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:24:49,068 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:24:49,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:24:49,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:24:49,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:24:49,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:24:49,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:24:49,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:24:49,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:24:49,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer 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(__VERIFIER_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 -> 45e9be5ff3d2c5f3e04037cd81f89ba3fcf7e541 [2019-12-07 10:24:49,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:24:49,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:24:49,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:24:49,183 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:24:49,183 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:24:49,184 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2019-12-07 10:24:49,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/data/b5bdd5fc4/c0d0c6220cb74d239122c6fde3297b9a/FLAGf153d46af [2019-12-07 10:24:49,679 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:24:49,679 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2019-12-07 10:24:49,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/data/b5bdd5fc4/c0d0c6220cb74d239122c6fde3297b9a/FLAGf153d46af [2019-12-07 10:24:49,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/data/b5bdd5fc4/c0d0c6220cb74d239122c6fde3297b9a [2019-12-07 10:24:49,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:24:49,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:24:49,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:24:49,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:24:49,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:24:49,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:24:49" (1/1) ... [2019-12-07 10:24:49,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ea2e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:49, skipping insertion in model container [2019-12-07 10:24:49,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:24:49" (1/1) ... [2019-12-07 10:24:49,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:24:49,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:24:49,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:24:49,944 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:24:49,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:24:50,009 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:24:50,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50 WrapperNode [2019-12-07 10:24:50,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:24:50,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:24:50,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:24:50,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:24:50,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:24:50,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:24:50,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:24:50,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:24:50,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... [2019-12-07 10:24:50,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:24:50,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:24:50,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:24:50,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:24:50,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/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 [2019-12-07 10:24:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:24:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 10:24:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:24:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:24:50,505 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:24:50,505 INFO L287 CfgBuilder]: Removed 98 assume(true) statements. [2019-12-07 10:24:50,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:24:50 BoogieIcfgContainer [2019-12-07 10:24:50,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:24:50,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:24:50,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:24:50,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:24:50,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:24:49" (1/3) ... [2019-12-07 10:24:50,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d87f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:24:50, skipping insertion in model container [2019-12-07 10:24:50,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:24:50" (2/3) ... [2019-12-07 10:24:50,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d87f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:24:50, skipping insertion in model container [2019-12-07 10:24:50,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:24:50" (3/3) ... [2019-12-07 10:24:50,513 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2019-12-07 10:24:50,522 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:24:50,528 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 10:24:50,539 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 10:24:50,558 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:24:50,559 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:24:50,559 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:24:50,559 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:24:50,559 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:24:50,559 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:24:50,559 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:24:50,559 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:24:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-12-07 10:24:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 10:24:50,575 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:50,575 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:24:50,575 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:50,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2019-12-07 10:24:50,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:50,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123798940] [2019-12-07 10:24:50,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:50,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123798940] [2019-12-07 10:24:50,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:50,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:24:50,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843951983] [2019-12-07 10:24:50,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:24:50,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:24:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:24:50,747 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-12-07 10:24:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:50,765 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-12-07 10:24:50,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:24:50,766 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 10:24:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:50,773 INFO L225 Difference]: With dead ends: 150 [2019-12-07 10:24:50,773 INFO L226 Difference]: Without dead ends: 74 [2019-12-07 10:24:50,775 INFO L630 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 [2019-12-07 10:24:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-07 10:24:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-12-07 10:24:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-07 10:24:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-12-07 10:24:50,801 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-12-07 10:24:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:50,802 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-12-07 10:24:50,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:24:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-12-07 10:24:50,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 10:24:50,802 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:50,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:24:50,803 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:50,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:50,803 INFO L82 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2019-12-07 10:24:50,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:50,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59110198] [2019-12-07 10:24:50,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:50,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59110198] [2019-12-07 10:24:50,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:50,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:24:50,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634186628] [2019-12-07 10:24:50,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:24:50,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:50,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:24:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:24:50,864 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2019-12-07 10:24:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:50,872 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2019-12-07 10:24:50,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:24:50,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 10:24:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:50,873 INFO L225 Difference]: With dead ends: 74 [2019-12-07 10:24:50,873 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 10:24:50,874 INFO L630 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 [2019-12-07 10:24:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 10:24:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 10:24:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:24:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-12-07 10:24:50,879 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2019-12-07 10:24:50,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:50,879 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-12-07 10:24:50,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:24:50,880 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-12-07 10:24:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 10:24:50,880 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:50,880 INFO L410 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] [2019-12-07 10:24:50,880 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:50,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:50,881 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2019-12-07 10:24:50,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:50,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439854532] [2019-12-07 10:24:50,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:50,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439854532] [2019-12-07 10:24:50,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:50,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:24:50,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650375698] [2019-12-07 10:24:50,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:24:50,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:50,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:24:50,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:24:50,957 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 5 states. [2019-12-07 10:24:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:50,992 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2019-12-07 10:24:50,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:24:50,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-12-07 10:24:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:50,993 INFO L225 Difference]: With dead ends: 62 [2019-12-07 10:24:50,993 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 10:24:50,993 INFO L630 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 [2019-12-07 10:24:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 10:24:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 10:24:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:24:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-12-07 10:24:50,997 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2019-12-07 10:24:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:50,997 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-12-07 10:24:50,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:24:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2019-12-07 10:24:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 10:24:50,998 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:50,998 INFO L410 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] [2019-12-07 10:24:50,998 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:50,998 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2019-12-07 10:24:50,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:50,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540933978] [2019-12-07 10:24:50,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:51,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540933978] [2019-12-07 10:24:51,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:51,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:24:51,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688274467] [2019-12-07 10:24:51,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:24:51,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:51,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:24:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:24:51,031 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2019-12-07 10:24:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:51,046 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2019-12-07 10:24:51,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:24:51,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-12-07 10:24:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:51,047 INFO L225 Difference]: With dead ends: 83 [2019-12-07 10:24:51,047 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 10:24:51,048 INFO L630 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 [2019-12-07 10:24:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 10:24:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-12-07 10:24:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 10:24:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2019-12-07 10:24:51,053 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2019-12-07 10:24:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:51,053 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2019-12-07 10:24:51,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:24:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2019-12-07 10:24:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-07 10:24:51,054 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:51,054 INFO L410 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] [2019-12-07 10:24:51,055 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2019-12-07 10:24:51,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:51,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753628928] [2019-12-07 10:24:51,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:51,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753628928] [2019-12-07 10:24:51,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:51,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:24:51,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810914495] [2019-12-07 10:24:51,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:24:51,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:51,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:24:51,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:24:51,095 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2019-12-07 10:24:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:51,135 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2019-12-07 10:24:51,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:24:51,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-12-07 10:24:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:51,136 INFO L225 Difference]: With dead ends: 139 [2019-12-07 10:24:51,136 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 10:24:51,137 INFO L630 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 [2019-12-07 10:24:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 10:24:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2019-12-07 10:24:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 10:24:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2019-12-07 10:24:51,145 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2019-12-07 10:24:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:51,145 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2019-12-07 10:24:51,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:24:51,146 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2019-12-07 10:24:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-07 10:24:51,146 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:51,147 INFO L410 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] [2019-12-07 10:24:51,147 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2019-12-07 10:24:51,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:51,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586483695] [2019-12-07 10:24:51,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:51,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586483695] [2019-12-07 10:24:51,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:51,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:24:51,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452509932] [2019-12-07 10:24:51,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:24:51,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:24:51,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:24:51,197 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2019-12-07 10:24:51,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:51,252 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2019-12-07 10:24:51,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 10:24:51,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-12-07 10:24:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:51,254 INFO L225 Difference]: With dead ends: 270 [2019-12-07 10:24:51,254 INFO L226 Difference]: Without dead ends: 220 [2019-12-07 10:24:51,255 INFO L630 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 [2019-12-07 10:24:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-12-07 10:24:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2019-12-07 10:24:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-07 10:24:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2019-12-07 10:24:51,266 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2019-12-07 10:24:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:51,266 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2019-12-07 10:24:51,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:24:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2019-12-07 10:24:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:24:51,268 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:51,268 INFO L410 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] [2019-12-07 10:24:51,268 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:51,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1166654740, now seen corresponding path program 1 times [2019-12-07 10:24:51,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:51,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120439290] [2019-12-07 10:24:51,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:51,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120439290] [2019-12-07 10:24:51,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:51,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:24:51,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669177563] [2019-12-07 10:24:51,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:24:51,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:51,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:24:51,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:24:51,307 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2019-12-07 10:24:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:51,383 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2019-12-07 10:24:51,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 10:24:51,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-12-07 10:24:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:51,385 INFO L225 Difference]: With dead ends: 280 [2019-12-07 10:24:51,386 INFO L226 Difference]: Without dead ends: 278 [2019-12-07 10:24:51,386 INFO L630 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 [2019-12-07 10:24:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-12-07 10:24:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2019-12-07 10:24:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-07 10:24:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2019-12-07 10:24:51,404 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2019-12-07 10:24:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:51,405 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2019-12-07 10:24:51,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:24:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2019-12-07 10:24:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:24:51,406 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:51,406 INFO L410 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] [2019-12-07 10:24:51,407 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:51,407 INFO L82 PathProgramCache]: Analyzing trace with hash 72774503, now seen corresponding path program 1 times [2019-12-07 10:24:51,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:51,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647007942] [2019-12-07 10:24:51,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:51,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647007942] [2019-12-07 10:24:51,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:51,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:24:51,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532432962] [2019-12-07 10:24:51,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:24:51,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:51,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:24:51,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:24:51,439 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 4 states. [2019-12-07 10:24:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:51,463 INFO L93 Difference]: Finished difference Result 240 states and 326 transitions. [2019-12-07 10:24:51,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:24:51,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-12-07 10:24:51,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:51,465 INFO L225 Difference]: With dead ends: 240 [2019-12-07 10:24:51,465 INFO L226 Difference]: Without dead ends: 146 [2019-12-07 10:24:51,465 INFO L630 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 [2019-12-07 10:24:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-12-07 10:24:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2019-12-07 10:24:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-12-07 10:24:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2019-12-07 10:24:51,475 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2019-12-07 10:24:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:51,475 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2019-12-07 10:24:51,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:24:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2019-12-07 10:24:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:24:51,476 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:51,476 INFO L410 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] [2019-12-07 10:24:51,476 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash 330939941, now seen corresponding path program 1 times [2019-12-07 10:24:51,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:51,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719903581] [2019-12-07 10:24:51,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:24:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:24:51,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719903581] [2019-12-07 10:24:51,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:24:51,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:24:51,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885745893] [2019-12-07 10:24:51,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:24:51,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:24:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:24:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:24:51,504 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 3 states. [2019-12-07 10:24:51,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:24:51,523 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2019-12-07 10:24:51,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:24:51,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-12-07 10:24:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:24:51,524 INFO L225 Difference]: With dead ends: 250 [2019-12-07 10:24:51,524 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 10:24:51,525 INFO L630 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 [2019-12-07 10:24:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 10:24:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-12-07 10:24:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-12-07 10:24:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2019-12-07 10:24:51,537 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2019-12-07 10:24:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:24:51,537 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2019-12-07 10:24:51,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:24:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2019-12-07 10:24:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 10:24:51,538 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:24:51,538 INFO L410 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] [2019-12-07 10:24:51,538 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:24:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:24:51,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1676876253, now seen corresponding path program 1 times [2019-12-07 10:24:51,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:24:51,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827370534] [2019-12-07 10:24:51,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:24:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:24:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:24:51,668 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:24:51,668 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:24:51,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:24:51 BoogieIcfgContainer [2019-12-07 10:24:51,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:24:51,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:24:51,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:24:51,732 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:24:51,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:24:50" (3/4) ... [2019-12-07 10:24:51,734 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 10:24:51,792 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_50f3f9c3-054f-41cc-8080-5a7eec239801/bin/uautomizer/witness.graphml [2019-12-07 10:24:51,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:24:51,794 INFO L168 Benchmark]: Toolchain (without parser) took 2095.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -109.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:24:51,794 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 956.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:24:51,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 935.6 MB in the beginning and 1.1 GB in the end (delta: -150.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:24:51,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:24:51,795 INFO L168 Benchmark]: Boogie Preprocessor took 26.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:24:51,795 INFO L168 Benchmark]: RCFGBuilder took 427.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:24:51,795 INFO L168 Benchmark]: TraceAbstraction took 1224.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:24:51,796 INFO L168 Benchmark]: Witness Printer took 60.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:24:51,797 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 956.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 935.6 MB in the beginning and 1.1 GB in the end (delta: -150.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.68 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 427.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1224.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 60.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L629] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L631] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND TRUE \read(tmp___2) [L845] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L697] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L704] COND TRUE \read(systemActive) [L726] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE ! pumpRunning [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L604] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L754] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L851] int tmp ; [L852] int tmp___0 ; [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L514] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 577 SDtfs, 722 SDslu, 756 SDs, 0 SdLazy, 101 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 378 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 10827 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...