./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.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_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/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 c24c1e7ee4ec00cdeabebf427b1fca35e12bb483 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:15:24,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:15:24,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:15:24,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:15:24,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:15:24,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:15:24,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:15:24,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:15:24,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:15:24,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:15:24,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:15:24,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:15:24,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:15:24,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:15:24,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:15:24,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:15:24,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:15:24,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:15:24,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:15:24,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:15:25,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:15:25,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:15:25,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:15:25,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:15:25,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:15:25,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:15:25,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:15:25,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:15:25,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:15:25,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:15:25,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:15:25,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:15:25,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:15:25,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:15:25,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:15:25,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:15:25,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:15:25,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:15:25,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:15:25,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:15:25,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:15:25,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 16:15:25,019 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:15:25,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:15:25,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:15:25,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:15:25,020 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:15:25,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:15:25,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:15:25,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:15:25,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:15:25,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:15:25,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:15:25,024 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_16a172c5-c16b-415b-9c14-752be6bd89ec/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 -> c24c1e7ee4ec00cdeabebf427b1fca35e12bb483 [2019-12-07 16:15:25,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:15:25,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:15:25,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:15:25,131 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:15:25,131 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:15:25,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2019-12-07 16:15:25,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/data/ddfe601b9/870a7d9b027c4267bc2ca3d44904fabe/FLAG250242ea9 [2019-12-07 16:15:25,596 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:15:25,596 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2019-12-07 16:15:25,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/data/ddfe601b9/870a7d9b027c4267bc2ca3d44904fabe/FLAG250242ea9 [2019-12-07 16:15:25,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/data/ddfe601b9/870a7d9b027c4267bc2ca3d44904fabe [2019-12-07 16:15:25,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:15:25,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:15:25,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:15:25,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:15:25,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:15:25,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:25,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c28c768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25, skipping insertion in model container [2019-12-07 16:15:25,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:25,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:15:25,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:15:25,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:15:25,880 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:15:25,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:15:25,945 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:15:25,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25 WrapperNode [2019-12-07 16:15:25,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:15:25,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:15:25,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:15:25,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:15:25,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:25,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:25,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:15:25,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:15:25,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:15:25,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:15:26,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... [2019-12-07 16:15:26,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:15:26,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:15:26,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:15:26,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:15:26,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/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 16:15:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:15:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 16:15:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:15:26,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:15:26,630 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:15:26,630 INFO L287 CfgBuilder]: Removed 276 assume(true) statements. [2019-12-07 16:15:26,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:15:26 BoogieIcfgContainer [2019-12-07 16:15:26,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:15:26,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:15:26,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:15:26,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:15:26,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:15:25" (1/3) ... [2019-12-07 16:15:26,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d977af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:15:26, skipping insertion in model container [2019-12-07 16:15:26,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:15:25" (2/3) ... [2019-12-07 16:15:26,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d977af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:15:26, skipping insertion in model container [2019-12-07 16:15:26,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:15:26" (3/3) ... [2019-12-07 16:15:26,636 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2019-12-07 16:15:26,642 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:15:26,647 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 16:15:26,654 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 16:15:26,672 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:15:26,672 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:15:26,672 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:15:26,672 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:15:26,672 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:15:26,672 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:15:26,672 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:15:26,672 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:15:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-12-07 16:15:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:15:26,691 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:26,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:15:26,692 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:26,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2002794138, now seen corresponding path program 1 times [2019-12-07 16:15:26,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:26,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534982789] [2019-12-07 16:15:26,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:26,860 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 16:15:26,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534982789] [2019-12-07 16:15:26,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:26,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:15:26,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924541691] [2019-12-07 16:15:26,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 16:15:26,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 16:15:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 16:15:26,874 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-12-07 16:15:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:26,901 INFO L93 Difference]: Finished difference Result 372 states and 569 transitions. [2019-12-07 16:15:26,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 16:15:26,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 16:15:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:26,910 INFO L225 Difference]: With dead ends: 372 [2019-12-07 16:15:26,910 INFO L226 Difference]: Without dead ends: 185 [2019-12-07 16:15:26,913 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 16:15:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-12-07 16:15:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2019-12-07 16:15:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-12-07 16:15:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2019-12-07 16:15:26,947 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2019-12-07 16:15:26,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:26,947 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2019-12-07 16:15:26,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 16:15:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2019-12-07 16:15:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 16:15:26,948 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:26,948 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 16:15:26,948 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:26,949 INFO L82 PathProgramCache]: Analyzing trace with hash 956037241, now seen corresponding path program 1 times [2019-12-07 16:15:26,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:26,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322799637] [2019-12-07 16:15:26,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,004 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 16:15:27,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322799637] [2019-12-07 16:15:27,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:15:27,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065437106] [2019-12-07 16:15:27,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:15:27,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:15:27,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:15:27,007 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2019-12-07 16:15:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,017 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2019-12-07 16:15:27,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:15:27,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 16:15:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,018 INFO L225 Difference]: With dead ends: 185 [2019-12-07 16:15:27,019 INFO L226 Difference]: Without dead ends: 71 [2019-12-07 16:15:27,019 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 16:15:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-12-07 16:15:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-12-07 16:15:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 16:15:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2019-12-07 16:15:27,024 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2019-12-07 16:15:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,025 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2019-12-07 16:15:27,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:15:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2019-12-07 16:15:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 16:15:27,025 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,025 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 16:15:27,026 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2019-12-07 16:15:27,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098144807] [2019-12-07 16:15:27,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,088 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 16:15:27,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098144807] [2019-12-07 16:15:27,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 16:15:27,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914021875] [2019-12-07 16:15:27,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:15:27,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:15:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:15:27,090 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 6 states. [2019-12-07 16:15:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,159 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2019-12-07 16:15:27,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:15:27,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-12-07 16:15:27,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,160 INFO L225 Difference]: With dead ends: 136 [2019-12-07 16:15:27,160 INFO L226 Difference]: Without dead ends: 71 [2019-12-07 16:15:27,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:15:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-12-07 16:15:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-12-07 16:15:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 16:15:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2019-12-07 16:15:27,166 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2019-12-07 16:15:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,167 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2019-12-07 16:15:27,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:15:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2019-12-07 16:15:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 16:15:27,168 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,168 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] [2019-12-07 16:15:27,168 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,168 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2019-12-07 16:15:27,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190164866] [2019-12-07 16:15:27,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,200 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 16:15:27,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190164866] [2019-12-07 16:15:27,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:15:27,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150791725] [2019-12-07 16:15:27,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:15:27,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:15:27,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:15:27,201 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2019-12-07 16:15:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,231 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2019-12-07 16:15:27,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:15:27,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-12-07 16:15:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,233 INFO L225 Difference]: With dead ends: 145 [2019-12-07 16:15:27,233 INFO L226 Difference]: Without dead ends: 80 [2019-12-07 16:15:27,234 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 16:15:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-12-07 16:15:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-12-07 16:15:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 16:15:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2019-12-07 16:15:27,240 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2019-12-07 16:15:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,240 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2019-12-07 16:15:27,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:15:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2019-12-07 16:15:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 16:15:27,241 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,241 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 16:15:27,242 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2019-12-07 16:15:27,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602355920] [2019-12-07 16:15:27,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,289 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 16:15:27,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602355920] [2019-12-07 16:15:27,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 16:15:27,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506477763] [2019-12-07 16:15:27,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:15:27,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:15:27,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:15:27,291 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2019-12-07 16:15:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,360 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2019-12-07 16:15:27,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 16:15:27,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 16:15:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,362 INFO L225 Difference]: With dead ends: 204 [2019-12-07 16:15:27,362 INFO L226 Difference]: Without dead ends: 132 [2019-12-07 16:15:27,363 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 16:15:27,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-12-07 16:15:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2019-12-07 16:15:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-12-07 16:15:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2019-12-07 16:15:27,372 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2019-12-07 16:15:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,372 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2019-12-07 16:15:27,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:15:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2019-12-07 16:15:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 16:15:27,374 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,374 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 16:15:27,374 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2019-12-07 16:15:27,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560007238] [2019-12-07 16:15:27,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,424 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 16:15:27,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560007238] [2019-12-07 16:15:27,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:15:27,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490025602] [2019-12-07 16:15:27,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:15:27,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:15:27,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:15:27,426 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2019-12-07 16:15:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,504 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2019-12-07 16:15:27,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 16:15:27,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 16:15:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,506 INFO L225 Difference]: With dead ends: 431 [2019-12-07 16:15:27,506 INFO L226 Difference]: Without dead ends: 350 [2019-12-07 16:15:27,507 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 16:15:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-12-07 16:15:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2019-12-07 16:15:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-12-07 16:15:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2019-12-07 16:15:27,521 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2019-12-07 16:15:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,521 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2019-12-07 16:15:27,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:15:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2019-12-07 16:15:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 16:15:27,522 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,522 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, 1] [2019-12-07 16:15:27,523 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,523 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2019-12-07 16:15:27,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715020391] [2019-12-07 16:15:27,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,569 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 16:15:27,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715020391] [2019-12-07 16:15:27,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:15:27,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730954425] [2019-12-07 16:15:27,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:15:27,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:15:27,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:15:27,571 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2019-12-07 16:15:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,675 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2019-12-07 16:15:27,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 16:15:27,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-12-07 16:15:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,678 INFO L225 Difference]: With dead ends: 470 [2019-12-07 16:15:27,678 INFO L226 Difference]: Without dead ends: 468 [2019-12-07 16:15:27,678 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 16:15:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-12-07 16:15:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2019-12-07 16:15:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-12-07 16:15:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2019-12-07 16:15:27,688 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2019-12-07 16:15:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,689 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2019-12-07 16:15:27,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:15:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2019-12-07 16:15:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 16:15:27,690 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,690 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, 1] [2019-12-07 16:15:27,690 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2019-12-07 16:15:27,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268348472] [2019-12-07 16:15:27,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,724 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 16:15:27,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268348472] [2019-12-07 16:15:27,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 16:15:27,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48180708] [2019-12-07 16:15:27,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:15:27,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:15:27,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:15:27,726 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 6 states. [2019-12-07 16:15:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,796 INFO L93 Difference]: Finished difference Result 428 states and 574 transitions. [2019-12-07 16:15:27,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:15:27,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-12-07 16:15:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,797 INFO L225 Difference]: With dead ends: 428 [2019-12-07 16:15:27,797 INFO L226 Difference]: Without dead ends: 272 [2019-12-07 16:15:27,798 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:15:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-12-07 16:15:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 174. [2019-12-07 16:15:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-12-07 16:15:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2019-12-07 16:15:27,808 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2019-12-07 16:15:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,808 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2019-12-07 16:15:27,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:15:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2019-12-07 16:15:27,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 16:15:27,809 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,809 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, 1] [2019-12-07 16:15:27,809 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2019-12-07 16:15:27,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162372515] [2019-12-07 16:15:27,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:15:27,831 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 16:15:27,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162372515] [2019-12-07 16:15:27,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:15:27,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:15:27,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048957027] [2019-12-07 16:15:27,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:15:27,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:15:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:15:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:15:27,833 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2019-12-07 16:15:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:15:27,861 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2019-12-07 16:15:27,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:15:27,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-12-07 16:15:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:15:27,862 INFO L225 Difference]: With dead ends: 394 [2019-12-07 16:15:27,862 INFO L226 Difference]: Without dead ends: 226 [2019-12-07 16:15:27,863 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 16:15:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-12-07 16:15:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2019-12-07 16:15:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-12-07 16:15:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2019-12-07 16:15:27,873 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2019-12-07 16:15:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:15:27,874 INFO L462 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2019-12-07 16:15:27,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:15:27,874 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2019-12-07 16:15:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 16:15:27,875 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:15:27,875 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, 1, 1] [2019-12-07 16:15:27,875 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:15:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:15:27,875 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2019-12-07 16:15:27,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:15:27,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087640325] [2019-12-07 16:15:27,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:15:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:15:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:15:27,969 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:15:27,970 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:15:28,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:15:28 BoogieIcfgContainer [2019-12-07 16:15:28,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:15:28,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:15:28,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:15:28,031 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:15:28,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:15:26" (3/4) ... [2019-12-07 16:15:28,033 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 16:15:28,088 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_16a172c5-c16b-415b-9c14-752be6bd89ec/bin/uautomizer/witness.graphml [2019-12-07 16:15:28,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:15:28,090 INFO L168 Benchmark]: Toolchain (without parser) took 2472.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 940.9 MB in the beginning and 952.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 77.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:15:28,090 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:15:28,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -137.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:15:28,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.21 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 16:15:28,091 INFO L168 Benchmark]: Boogie Preprocessor took 45.19 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 16:15:28,092 INFO L168 Benchmark]: RCFGBuilder took 588.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 978.7 MB in the end (delta: 83.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:15:28,092 INFO L168 Benchmark]: TraceAbstraction took 1398.84 ms. Allocated memory is still 1.1 GB. Free memory was 978.7 MB in the beginning and 969.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:15:28,092 INFO L168 Benchmark]: Witness Printer took 57.87 ms. Allocated memory is still 1.1 GB. Free memory was 969.4 MB in the beginning and 952.1 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:15:28,094 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 327.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -137.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.21 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 45.19 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. * RCFGBuilder took 588.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 978.7 MB in the end (delta: 83.1 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1398.84 ms. Allocated memory is still 1.1 GB. Free memory was 978.7 MB in the beginning and 969.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. * Witness Printer took 57.87 ms. Allocated memory is still 1.1 GB. Free memory was 969.4 MB in the beginning and 952.1 MB 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: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] int retValue_acc ; [L526] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L787] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L789] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L568] COND TRUE \read(systemActive) [L642] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L645] COND FALSE !(\read(pumpRunning)) [L616] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L619] COND FALSE !(\read(pumpRunning)) [L590] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE ! pumpRunning [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L958] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L670] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L73] __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, 189 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1135 SDtfs, 1663 SDslu, 1257 SDs, 0 SdLazy, 203 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 13180 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...