./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/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 3e754f75ca06d39e1069a0bad88498ddd2436bb7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 23:25:25,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:25:25,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:25:25,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:25:25,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:25:25,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:25:25,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:25:25,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:25:25,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:25:26,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:25:26,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:25:26,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:25:26,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:25:26,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:25:26,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:25:26,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:25:26,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:25:26,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:25:26,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:25:26,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:25:26,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:25:26,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:25:26,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:25:26,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:25:26,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:25:26,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:25:26,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:25:26,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:25:26,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:25:26,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:25:26,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:25:26,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:25:26,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:25:26,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:25:26,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:25:26,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:25:26,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:25:26,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:25:26,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:25:26,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:25:26,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:25:26,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:25:26,062 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:25:26,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:25:26,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:25:26,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:25:26,065 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:25:26,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:25:26,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:25:26,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:25:26,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:25:26,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:25:26,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:25:26,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:25:26,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:25:26,068 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:25:26,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:25:26,069 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:25:26,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:25:26,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:25:26,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:25:26,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:25:26,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:25:26,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:25:26,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:25:26,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:25:26,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:25:26,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:25:26,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:25:26,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:25:26,072 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_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/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 -> 3e754f75ca06d39e1069a0bad88498ddd2436bb7 [2019-11-15 23:25:26,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:25:26,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:25:26,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:25:26,150 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:25:26,150 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:25:26,151 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2019-11-15 23:25:26,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/data/3ebca2a59/472900c91c3a413fa5ec715401ace5fe/FLAG7db276a1c [2019-11-15 23:25:26,666 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:25:26,667 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2019-11-15 23:25:26,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/data/3ebca2a59/472900c91c3a413fa5ec715401ace5fe/FLAG7db276a1c [2019-11-15 23:25:26,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/data/3ebca2a59/472900c91c3a413fa5ec715401ace5fe [2019-11-15 23:25:26,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:25:26,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:25:26,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:25:26,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:25:26,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:25:26,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:25:26" (1/1) ... [2019-11-15 23:25:26,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c12a99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:26, skipping insertion in model container [2019-11-15 23:25:26,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:25:26" (1/1) ... [2019-11-15 23:25:26,708 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:25:26,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:25:27,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:25:27,054 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:25:27,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:25:27,177 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:25:27,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27 WrapperNode [2019-11-15 23:25:27,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:25:27,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:25:27,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:25:27,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:25:27,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:25:27,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:25:27,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:25:27,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:25:27,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... [2019-11-15 23:25:27,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:25:27,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:25:27,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:25:27,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:25:27,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/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 [2019-11-15 23:25:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:25:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 23:25:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:25:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:25:28,023 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:25:28,024 INFO L284 CfgBuilder]: Removed 96 assume(true) statements. [2019-11-15 23:25:28,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:28 BoogieIcfgContainer [2019-11-15 23:25:28,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:25:28,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:25:28,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:25:28,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:25:28,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:25:26" (1/3) ... [2019-11-15 23:25:28,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13597e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:25:28, skipping insertion in model container [2019-11-15 23:25:28,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:27" (2/3) ... [2019-11-15 23:25:28,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13597e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:25:28, skipping insertion in model container [2019-11-15 23:25:28,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:28" (3/3) ... [2019-11-15 23:25:28,037 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2019-11-15 23:25:28,047 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:25:28,058 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-15 23:25:28,069 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-15 23:25:28,105 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:25:28,105 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:25:28,105 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:25:28,105 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:25:28,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:25:28,107 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:25:28,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:25:28,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:25:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-11-15 23:25:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:25:28,132 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:28,132 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:28,134 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2019-11-15 23:25:28,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:28,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276974479] [2019-11-15 23:25:28,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:28,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276974479] [2019-11-15 23:25:28,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:28,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:25:28,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23977] [2019-11-15 23:25:28,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:25:28,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:25:28,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:25:28,396 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-11-15 23:25:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:28,436 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-11-15 23:25:28,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:25:28,439 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-15 23:25:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:28,450 INFO L225 Difference]: With dead ends: 150 [2019-11-15 23:25:28,451 INFO L226 Difference]: Without dead ends: 74 [2019-11-15 23:25:28,454 INFO L600 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 [2019-11-15 23:25:28,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-15 23:25:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-11-15 23:25:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-15 23:25:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-11-15 23:25:28,503 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-11-15 23:25:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:28,504 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-11-15 23:25:28,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:25:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-11-15 23:25:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:25:28,505 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:28,506 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:25:28,506 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:28,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2019-11-15 23:25:28,507 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:28,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556371605] [2019-11-15 23:25:28,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:28,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556371605] [2019-11-15 23:25:28,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:28,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:25:28,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909644706] [2019-11-15 23:25:28,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:25:28,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:28,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:25:28,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:25:28,638 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2019-11-15 23:25:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:28,647 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2019-11-15 23:25:28,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:25:28,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-15 23:25:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:28,648 INFO L225 Difference]: With dead ends: 74 [2019-11-15 23:25:28,649 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 23:25:28,650 INFO L600 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 [2019-11-15 23:25:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 23:25:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-15 23:25:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 23:25:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-11-15 23:25:28,654 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2019-11-15 23:25:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:28,655 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-11-15 23:25:28,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:25:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-11-15 23:25:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 23:25:28,656 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:28,656 INFO L380 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] [2019-11-15 23:25:28,656 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:28,657 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2019-11-15 23:25:28,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:28,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880949975] [2019-11-15 23:25:28,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:28,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880949975] [2019-11-15 23:25:28,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:28,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:25:28,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212748280] [2019-11-15 23:25:28,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:25:28,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:25:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:25:28,756 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 3 states. [2019-11-15 23:25:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:28,768 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2019-11-15 23:25:28,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:25:28,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-15 23:25:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:28,770 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:25:28,771 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 23:25:28,772 INFO L600 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 [2019-11-15 23:25:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 23:25:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-15 23:25:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 23:25:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-15 23:25:28,784 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2019-11-15 23:25:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:28,785 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-15 23:25:28,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:25:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2019-11-15 23:25:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 23:25:28,787 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:28,787 INFO L380 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] [2019-11-15 23:25:28,787 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:28,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2019-11-15 23:25:28,789 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:28,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158218653] [2019-11-15 23:25:28,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:28,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158218653] [2019-11-15 23:25:28,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:28,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:25:28,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440540383] [2019-11-15 23:25:28,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:25:28,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:28,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:25:28,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:25:28,888 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2019-11-15 23:25:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:28,912 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2019-11-15 23:25:28,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:25:28,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-15 23:25:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:28,914 INFO L225 Difference]: With dead ends: 83 [2019-11-15 23:25:28,914 INFO L226 Difference]: Without dead ends: 55 [2019-11-15 23:25:28,914 INFO L600 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 [2019-11-15 23:25:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-15 23:25:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-11-15 23:25:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-15 23:25:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2019-11-15 23:25:28,922 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2019-11-15 23:25:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:28,923 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2019-11-15 23:25:28,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:25:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2019-11-15 23:25:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:25:28,924 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:28,924 INFO L380 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] [2019-11-15 23:25:28,925 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2019-11-15 23:25:28,925 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:28,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294989982] [2019-11-15 23:25:28,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:28,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:29,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294989982] [2019-11-15 23:25:29,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:29,036 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:25:29,036 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776429607] [2019-11-15 23:25:29,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:25:29,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:25:29,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:25:29,037 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2019-11-15 23:25:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:29,166 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2019-11-15 23:25:29,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:25:29,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-15 23:25:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:29,171 INFO L225 Difference]: With dead ends: 139 [2019-11-15 23:25:29,171 INFO L226 Difference]: Without dead ends: 92 [2019-11-15 23:25:29,171 INFO L600 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 [2019-11-15 23:25:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-15 23:25:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2019-11-15 23:25:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-15 23:25:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2019-11-15 23:25:29,178 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2019-11-15 23:25:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:29,178 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2019-11-15 23:25:29,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:25:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2019-11-15 23:25:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:25:29,180 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:29,180 INFO L380 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] [2019-11-15 23:25:29,180 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2019-11-15 23:25:29,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:29,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450813161] [2019-11-15 23:25:29,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:29,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450813161] [2019-11-15 23:25:29,253 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:29,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:25:29,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062281262] [2019-11-15 23:25:29,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:25:29,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:25:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:25:29,254 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2019-11-15 23:25:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:29,410 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2019-11-15 23:25:29,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:25:29,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-15 23:25:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:29,415 INFO L225 Difference]: With dead ends: 270 [2019-11-15 23:25:29,415 INFO L226 Difference]: Without dead ends: 220 [2019-11-15 23:25:29,416 INFO L600 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 [2019-11-15 23:25:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-11-15 23:25:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2019-11-15 23:25:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-15 23:25:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2019-11-15 23:25:29,455 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2019-11-15 23:25:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:29,456 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2019-11-15 23:25:29,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:25:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2019-11-15 23:25:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 23:25:29,458 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:29,458 INFO L380 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] [2019-11-15 23:25:29,460 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:29,461 INFO L82 PathProgramCache]: Analyzing trace with hash -863305781, now seen corresponding path program 1 times [2019-11-15 23:25:29,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:29,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031000434] [2019-11-15 23:25:29,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:29,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031000434] [2019-11-15 23:25:29,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:29,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:25:29,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806686291] [2019-11-15 23:25:29,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:25:29,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:29,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:25:29,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:25:29,574 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2019-11-15 23:25:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:29,707 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2019-11-15 23:25:29,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:25:29,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-15 23:25:29,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:29,710 INFO L225 Difference]: With dead ends: 280 [2019-11-15 23:25:29,711 INFO L226 Difference]: Without dead ends: 278 [2019-11-15 23:25:29,711 INFO L600 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 [2019-11-15 23:25:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-11-15 23:25:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2019-11-15 23:25:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-15 23:25:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2019-11-15 23:25:29,747 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2019-11-15 23:25:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:29,748 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2019-11-15 23:25:29,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:25:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2019-11-15 23:25:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 23:25:29,749 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:29,749 INFO L380 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] [2019-11-15 23:25:29,749 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:29,750 INFO L82 PathProgramCache]: Analyzing trace with hash 376123462, now seen corresponding path program 1 times [2019-11-15 23:25:29,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:29,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614178768] [2019-11-15 23:25:29,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:29,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614178768] [2019-11-15 23:25:29,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:29,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:25:29,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078483942] [2019-11-15 23:25:29,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:25:29,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:29,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:25:29,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:25:29,813 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 5 states. [2019-11-15 23:25:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:29,880 INFO L93 Difference]: Finished difference Result 276 states and 374 transitions. [2019-11-15 23:25:29,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:25:29,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-15 23:25:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:29,882 INFO L225 Difference]: With dead ends: 276 [2019-11-15 23:25:29,882 INFO L226 Difference]: Without dead ends: 182 [2019-11-15 23:25:29,883 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:25:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-15 23:25:29,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 104. [2019-11-15 23:25:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-15 23:25:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2019-11-15 23:25:29,897 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2019-11-15 23:25:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:29,898 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2019-11-15 23:25:29,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:25:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2019-11-15 23:25:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 23:25:29,899 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:29,900 INFO L380 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] [2019-11-15 23:25:29,900 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:29,900 INFO L82 PathProgramCache]: Analyzing trace with hash 634288900, now seen corresponding path program 1 times [2019-11-15 23:25:29,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:29,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741406455] [2019-11-15 23:25:29,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:29,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:29,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741406455] [2019-11-15 23:25:29,945 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:25:29,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:25:29,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190361832] [2019-11-15 23:25:29,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:25:29,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:25:29,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:25:29,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:25:29,946 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 3 states. [2019-11-15 23:25:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:25:29,975 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2019-11-15 23:25:29,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:25:29,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-15 23:25:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:25:29,977 INFO L225 Difference]: With dead ends: 250 [2019-11-15 23:25:29,977 INFO L226 Difference]: Without dead ends: 152 [2019-11-15 23:25:29,978 INFO L600 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 [2019-11-15 23:25:29,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-15 23:25:29,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-11-15 23:25:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-15 23:25:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2019-11-15 23:25:29,994 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2019-11-15 23:25:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:25:29,994 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2019-11-15 23:25:29,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:25:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2019-11-15 23:25:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:25:30,001 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:25:30,002 INFO L380 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] [2019-11-15 23:25:30,003 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:25:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1373527294, now seen corresponding path program 1 times [2019-11-15 23:25:30,003 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:30,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476080528] [2019-11-15 23:25:30,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:30,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:30,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:30,857 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:25:30,859 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:25:30,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:25:30 BoogieIcfgContainer [2019-11-15 23:25:30,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:25:30,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:25:30,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:25:30,971 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:25:30,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:28" (3/4) ... [2019-11-15 23:25:30,973 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:25:31,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0f0338dd-1206-4f6b-9f4a-4fb93e91a23b/bin/uautomizer/witness.graphml [2019-11-15 23:25:31,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:25:31,107 INFO L168 Benchmark]: Toolchain (without parser) took 4413.12 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 239.6 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -153.7 MB). Peak memory consumption was 85.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:31,107 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:25:31,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -205.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:31,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:31,108 INFO L168 Benchmark]: Boogie Preprocessor took 56.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:25:31,108 INFO L168 Benchmark]: RCFGBuilder took 703.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:31,109 INFO L168 Benchmark]: TraceAbstraction took 2943.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -39.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:31,109 INFO L168 Benchmark]: Witness Printer took 134.37 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:31,111 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 484.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -205.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 87.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 703.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2943.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -39.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. * Witness Printer took 134.37 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L590] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L592] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L439] COND TRUE \read(systemActive) [L461] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L464] COND TRUE ! pumpRunning [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L886] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L489] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L780] int tmp ; [L781] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L410] __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: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 577 SDtfs, 704 SDslu, 767 SDs, 0 SdLazy, 102 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 414 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 12233 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...