./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/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 0.1.24-cad4683 [2019-10-22 09:00:37,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:37,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:37,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:37,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:37,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:37,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:37,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:37,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:37,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:37,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:37,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:37,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:37,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:37,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:37,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:37,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:37,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:37,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:37,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:37,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:37,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:37,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:37,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:37,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:37,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:37,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:37,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:37,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:37,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:37,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:37,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:37,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:37,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:37,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:37,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:37,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:37,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:37,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:37,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:37,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:37,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:00:37,608 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:37,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:37,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:37,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:37,609 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:37,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:37,609 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:37,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:37,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:37,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:37,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:37,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:37,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:37,611 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:37,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:37,611 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:37,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:37,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:37,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:37,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:37,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:37,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:37,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:37,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:37,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:37,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:37,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:37,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:37,613 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/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/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 [2019-10-22 09:00:37,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:37,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:37,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:37,650 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:37,650 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:37,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2019-10-22 09:00:37,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/data/d244bee35/2ca58b5dd6f342598c63e5ed692fb54f/FLAGfe3137975 [2019-10-22 09:00:38,141 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:38,142 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2019-10-22 09:00:38,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/data/d244bee35/2ca58b5dd6f342598c63e5ed692fb54f/FLAGfe3137975 [2019-10-22 09:00:38,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/data/d244bee35/2ca58b5dd6f342598c63e5ed692fb54f [2019-10-22 09:00:38,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:38,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:38,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:38,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:38,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:38,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,178 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 22.10 09:00:38, skipping insertion in model container [2019-10-22 09:00:38,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,185 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:38,235 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:38,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:38,611 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:38,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:38,707 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:38,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38 WrapperNode [2019-10-22 09:00:38,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:38,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:38,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:38,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:38,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:38,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:38,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:38,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:38,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... [2019-10-22 09:00:38,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:38,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:38,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:38,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:38,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/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 [2019-10-22 09:00:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:00:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 09:00:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:38,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:40,065 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:40,065 INFO L284 CfgBuilder]: Removed 276 assume(true) statements. [2019-10-22 09:00:40,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:40 BoogieIcfgContainer [2019-10-22 09:00:40,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:40,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:40,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:40,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:40,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:38" (1/3) ... [2019-10-22 09:00:40,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513fcc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:40, skipping insertion in model container [2019-10-22 09:00:40,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:38" (2/3) ... [2019-10-22 09:00:40,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513fcc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:40, skipping insertion in model container [2019-10-22 09:00:40,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:40" (3/3) ... [2019-10-22 09:00:40,081 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2019-10-22 09:00:40,090 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:40,097 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 09:00:40,107 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 09:00:40,134 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:40,134 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:40,134 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:40,134 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:40,136 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:40,136 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:40,137 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:40,137 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-22 09:00:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:00:40,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:40,167 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:40,169 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2002794138, now seen corresponding path program 1 times [2019-10-22 09:00:40,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:40,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308622702] [2019-10-22 09:00:40,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:40,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308622702] [2019-10-22 09:00:40,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:40,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:40,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273199321] [2019-10-22 09:00:40,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:00:40,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:00:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:00:40,426 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 2 states. [2019-10-22 09:00:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:40,477 INFO L93 Difference]: Finished difference Result 372 states and 569 transitions. [2019-10-22 09:00:40,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:00:40,479 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 09:00:40,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:40,491 INFO L225 Difference]: With dead ends: 372 [2019-10-22 09:00:40,492 INFO L226 Difference]: Without dead ends: 185 [2019-10-22 09:00:40,495 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 [2019-10-22 09:00:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-10-22 09:00:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2019-10-22 09:00:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-10-22 09:00:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2019-10-22 09:00:40,546 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2019-10-22 09:00:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:40,547 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2019-10-22 09:00:40,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:00:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2019-10-22 09:00:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:00:40,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:40,548 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:40,548 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:40,549 INFO L82 PathProgramCache]: Analyzing trace with hash 956037241, now seen corresponding path program 1 times [2019-10-22 09:00:40,549 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:40,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820557329] [2019-10-22 09:00:40,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:40,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820557329] [2019-10-22 09:00:40,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:40,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:00:40,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755665066] [2019-10-22 09:00:40,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:00:40,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:40,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:40,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:40,634 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2019-10-22 09:00:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:40,650 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2019-10-22 09:00:40,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:40,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 09:00:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:40,652 INFO L225 Difference]: With dead ends: 185 [2019-10-22 09:00:40,652 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 09:00:40,653 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 [2019-10-22 09:00:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 09:00:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-10-22 09:00:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-22 09:00:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2019-10-22 09:00:40,660 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2019-10-22 09:00:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:40,660 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2019-10-22 09:00:40,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:00:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2019-10-22 09:00:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:00:40,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:40,661 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] [2019-10-22 09:00:40,661 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:40,662 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2019-10-22 09:00:40,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:40,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193165208] [2019-10-22 09:00:40,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:40,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193165208] [2019-10-22 09:00:40,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:40,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:40,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094389310] [2019-10-22 09:00:40,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:40,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:40,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:40,769 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 6 states. [2019-10-22 09:00:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:40,849 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2019-10-22 09:00:40,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:40,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 09:00:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:40,851 INFO L225 Difference]: With dead ends: 136 [2019-10-22 09:00:40,851 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 09:00:40,852 INFO L600 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 [2019-10-22 09:00:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 09:00:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-10-22 09:00:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-22 09:00:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2019-10-22 09:00:40,858 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2019-10-22 09:00:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:40,859 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2019-10-22 09:00:40,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2019-10-22 09:00:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:40,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:40,860 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] [2019-10-22 09:00:40,860 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2019-10-22 09:00:40,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:40,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587147952] [2019-10-22 09:00:40,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:40,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:40,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587147952] [2019-10-22 09:00:40,948 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:40,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:40,948 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385569342] [2019-10-22 09:00:40,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:00:40,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:40,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:40,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:40,949 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2019-10-22 09:00:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:41,013 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2019-10-22 09:00:41,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:41,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 09:00:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:41,015 INFO L225 Difference]: With dead ends: 145 [2019-10-22 09:00:41,015 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 09:00:41,015 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 [2019-10-22 09:00:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 09:00:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-10-22 09:00:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:00:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2019-10-22 09:00:41,024 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2019-10-22 09:00:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:41,025 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2019-10-22 09:00:41,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:00:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2019-10-22 09:00:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 09:00:41,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:41,026 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] [2019-10-22 09:00:41,026 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:41,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2019-10-22 09:00:41,027 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:41,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897947873] [2019-10-22 09:00:41,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,028 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:41,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897947873] [2019-10-22 09:00:41,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:41,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:41,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939685651] [2019-10-22 09:00:41,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:41,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:41,114 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2019-10-22 09:00:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:41,209 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2019-10-22 09:00:41,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:41,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 09:00:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:41,211 INFO L225 Difference]: With dead ends: 204 [2019-10-22 09:00:41,211 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 09:00:41,212 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 [2019-10-22 09:00:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 09:00:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2019-10-22 09:00:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 09:00:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2019-10-22 09:00:41,225 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2019-10-22 09:00:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:41,225 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2019-10-22 09:00:41,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2019-10-22 09:00:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 09:00:41,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:41,226 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] [2019-10-22 09:00:41,227 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:41,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:41,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2019-10-22 09:00:41,227 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:41,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049471856] [2019-10-22 09:00:41,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:41,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049471856] [2019-10-22 09:00:41,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:41,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:41,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571482815] [2019-10-22 09:00:41,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:41,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:41,277 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2019-10-22 09:00:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:41,378 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2019-10-22 09:00:41,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:00:41,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 09:00:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:41,381 INFO L225 Difference]: With dead ends: 431 [2019-10-22 09:00:41,382 INFO L226 Difference]: Without dead ends: 350 [2019-10-22 09:00:41,383 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 [2019-10-22 09:00:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-10-22 09:00:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2019-10-22 09:00:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-10-22 09:00:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2019-10-22 09:00:41,422 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2019-10-22 09:00:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:41,423 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2019-10-22 09:00:41,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2019-10-22 09:00:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:00:41,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:41,424 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, 1] [2019-10-22 09:00:41,424 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:41,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:41,425 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2019-10-22 09:00:41,425 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:41,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275660850] [2019-10-22 09:00:41,425 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,425 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:41,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275660850] [2019-10-22 09:00:41,485 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:41,485 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:00:41,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071908016] [2019-10-22 09:00:41,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:41,485 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:41,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:41,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:41,486 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2019-10-22 09:00:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:41,668 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2019-10-22 09:00:41,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:00:41,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-22 09:00:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:41,671 INFO L225 Difference]: With dead ends: 470 [2019-10-22 09:00:41,671 INFO L226 Difference]: Without dead ends: 468 [2019-10-22 09:00:41,672 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 [2019-10-22 09:00:41,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-10-22 09:00:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2019-10-22 09:00:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-10-22 09:00:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2019-10-22 09:00:41,698 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2019-10-22 09:00:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:41,699 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2019-10-22 09:00:41,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2019-10-22 09:00:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:00:41,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:41,700 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, 1] [2019-10-22 09:00:41,701 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2019-10-22 09:00:41,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:41,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785872247] [2019-10-22 09:00:41,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:41,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785872247] [2019-10-22 09:00:41,773 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:41,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:00:41,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910783075] [2019-10-22 09:00:41,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:41,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:41,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:41,777 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 6 states. [2019-10-22 09:00:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:41,954 INFO L93 Difference]: Finished difference Result 428 states and 574 transitions. [2019-10-22 09:00:41,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:41,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-10-22 09:00:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:41,957 INFO L225 Difference]: With dead ends: 428 [2019-10-22 09:00:41,957 INFO L226 Difference]: Without dead ends: 272 [2019-10-22 09:00:41,957 INFO L600 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 [2019-10-22 09:00:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-10-22 09:00:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 174. [2019-10-22 09:00:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-10-22 09:00:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2019-10-22 09:00:41,973 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2019-10-22 09:00:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:41,973 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2019-10-22 09:00:41,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:41,974 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2019-10-22 09:00:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:00:41,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:41,975 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, 1] [2019-10-22 09:00:41,975 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:41,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2019-10-22 09:00:41,976 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:41,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541503875] [2019-10-22 09:00:41,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:41,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:42,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541503875] [2019-10-22 09:00:42,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:42,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:00:42,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831665580] [2019-10-22 09:00:42,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:00:42,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:42,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:42,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:42,012 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2019-10-22 09:00:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:42,051 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2019-10-22 09:00:42,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:42,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-10-22 09:00:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:42,052 INFO L225 Difference]: With dead ends: 394 [2019-10-22 09:00:42,053 INFO L226 Difference]: Without dead ends: 226 [2019-10-22 09:00:42,053 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 [2019-10-22 09:00:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-10-22 09:00:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2019-10-22 09:00:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-10-22 09:00:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2019-10-22 09:00:42,073 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2019-10-22 09:00:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:42,073 INFO L462 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2019-10-22 09:00:42,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:00:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2019-10-22 09:00:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 09:00:42,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:42,075 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, 1, 1] [2019-10-22 09:00:42,075 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2019-10-22 09:00:42,075 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:42,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231845824] [2019-10-22 09:00:42,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:42,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:42,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:42,899 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:42,900 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:00:42,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:42 BoogieIcfgContainer [2019-10-22 09:00:42,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:42,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:42,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:42,996 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:42,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:40" (3/4) ... [2019-10-22 09:00:42,998 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:00:43,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_28b8071f-ecc5-4c98-8133-65a32b6bad99/bin/uautomizer/witness.graphml [2019-10-22 09:00:43,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:43,097 INFO L168 Benchmark]: Toolchain (without parser) took 4931.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 230.7 MB). Free memory was 939.1 MB in the beginning and 915.8 MB in the end (delta: 23.4 MB). Peak memory consumption was 254.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:43,098 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:43,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:43,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.46 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:43,101 INFO L168 Benchmark]: Boogie Preprocessor took 42.98 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. [2019-10-22 09:00:43,101 INFO L168 Benchmark]: RCFGBuilder took 1241.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:43,101 INFO L168 Benchmark]: TraceAbstraction took 2927.34 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 70.8 MB). Free memory was 1.0 GB in the beginning and 933.4 MB in the end (delta: 104.7 MB). Peak memory consumption was 175.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:43,102 INFO L168 Benchmark]: Witness Printer took 100.56 ms. Allocated memory is still 1.3 GB. Free memory was 933.4 MB in the beginning and 915.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:43,103 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 541.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 73.46 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.98 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 1241.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2927.34 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 70.8 MB). Free memory was 1.0 GB in the beginning and 933.4 MB in the end (delta: 104.7 MB). Peak memory consumption was 175.5 MB. Max. memory is 11.5 GB. * Witness Printer took 100.56 ms. Allocated memory is still 1.3 GB. Free memory was 933.4 MB in the beginning and 915.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 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; [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: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1135 SDtfs, 1663 SDslu, 1257 SDs, 0 SdLazy, 203 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.4s 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...