./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/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 9eb4b34c09edb6dce3c64c5d30aa92b31214d915 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:32:10,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:32:10,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:32:10,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:32:10,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:32:10,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:32:10,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:32:10,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:32:10,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:32:10,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:32:10,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:32:10,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:32:10,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:32:10,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:32:10,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:32:10,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:32:10,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:32:10,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:32:10,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:32:10,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:32:10,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:32:10,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:32:10,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:32:10,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:32:10,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:32:10,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:32:10,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:32:10,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:32:10,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:32:10,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:32:10,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:32:10,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:32:10,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:32:10,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:32:10,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:32:10,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:32:10,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:32:10,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:32:10,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:32:10,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:32:10,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:32:10,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 14:32:10,704 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:32:10,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:32:10,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:32:10,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:32:10,705 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:32:10,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:32:10,705 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:32:10,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:32:10,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:32:10,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:32:10,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:32:10,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:32:10,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:32:10,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:32:10,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:32:10,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:32:10,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:32:10,708 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_c866541f-6021-488b-9730-c720a910d4b6/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 -> 9eb4b34c09edb6dce3c64c5d30aa92b31214d915 [2019-12-07 14:32:10,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:32:10,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:32:10,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:32:10,823 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:32:10,823 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:32:10,824 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2019-12-07 14:32:10,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/data/06de7ece4/ae4c039764ff495daa109ab9b174ac2b/FLAGfa1b5a426 [2019-12-07 14:32:11,305 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:32:11,305 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2019-12-07 14:32:11,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/data/06de7ece4/ae4c039764ff495daa109ab9b174ac2b/FLAGfa1b5a426 [2019-12-07 14:32:11,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/data/06de7ece4/ae4c039764ff495daa109ab9b174ac2b [2019-12-07 14:32:11,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:32:11,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:32:11,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:32:11,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:32:11,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:32:11,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581b80cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11, skipping insertion in model container [2019-12-07 14:32:11,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:32:11,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:32:11,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:32:11,575 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:32:11,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:32:11,641 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:32:11,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11 WrapperNode [2019-12-07 14:32:11,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:32:11,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:32:11,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:32:11,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:32:11,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:32:11,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:32:11,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:32:11,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:32:11,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... [2019-12-07 14:32:11,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:32:11,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:32:11,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:32:11,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:32:11,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:32:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:32:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 14:32:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:32:11,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:32:12,146 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:32:12,146 INFO L287 CfgBuilder]: Removed 102 assume(true) statements. [2019-12-07 14:32:12,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:32:12 BoogieIcfgContainer [2019-12-07 14:32:12,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:32:12,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:32:12,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:32:12,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:32:12,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:32:11" (1/3) ... [2019-12-07 14:32:12,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea56eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:32:12, skipping insertion in model container [2019-12-07 14:32:12,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:32:11" (2/3) ... [2019-12-07 14:32:12,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea56eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:32:12, skipping insertion in model container [2019-12-07 14:32:12,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:32:12" (3/3) ... [2019-12-07 14:32:12,152 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2019-12-07 14:32:12,158 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:32:12,163 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 14:32:12,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 14:32:12,186 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:32:12,186 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:32:12,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:32:12,186 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:32:12,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:32:12,186 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:32:12,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:32:12,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:32:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-12-07 14:32:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 14:32:12,202 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:12,203 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:12,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:12,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash -502845476, now seen corresponding path program 1 times [2019-12-07 14:32:12,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:12,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949566362] [2019-12-07 14:32:12,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:12,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949566362] [2019-12-07 14:32:12,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:12,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:32:12,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407738544] [2019-12-07 14:32:12,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:32:12,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:32:12,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:32:12,372 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2019-12-07 14:32:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:12,390 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2019-12-07 14:32:12,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:32:12,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 14:32:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:12,398 INFO L225 Difference]: With dead ends: 154 [2019-12-07 14:32:12,398 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 14:32:12,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:32:12,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 14:32:12,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-12-07 14:32:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 14:32:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2019-12-07 14:32:12,428 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2019-12-07 14:32:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:12,428 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2019-12-07 14:32:12,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:32:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2019-12-07 14:32:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 14:32:12,429 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:12,429 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:12,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:12,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1549602373, now seen corresponding path program 1 times [2019-12-07 14:32:12,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:12,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733817338] [2019-12-07 14:32:12,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:12,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733817338] [2019-12-07 14:32:12,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:12,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:32:12,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123933190] [2019-12-07 14:32:12,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:32:12,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:12,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:32:12,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:12,493 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2019-12-07 14:32:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:12,500 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2019-12-07 14:32:12,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:32:12,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 14:32:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:12,501 INFO L225 Difference]: With dead ends: 76 [2019-12-07 14:32:12,501 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 14:32:12,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 14:32:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 14:32:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 14:32:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2019-12-07 14:32:12,506 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2019-12-07 14:32:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:12,506 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2019-12-07 14:32:12,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:32:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2019-12-07 14:32:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 14:32:12,507 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:12,507 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:12,507 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2019-12-07 14:32:12,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:12,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859205891] [2019-12-07 14:32:12,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:12,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859205891] [2019-12-07 14:32:12,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:12,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:32:12,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521366977] [2019-12-07 14:32:12,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:32:12,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:32:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:12,567 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 3 states. [2019-12-07 14:32:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:12,593 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2019-12-07 14:32:12,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:32:12,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-07 14:32:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:12,594 INFO L225 Difference]: With dead ends: 96 [2019-12-07 14:32:12,594 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 14:32:12,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 14:32:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2019-12-07 14:32:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 14:32:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2019-12-07 14:32:12,601 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 22 [2019-12-07 14:32:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:12,601 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2019-12-07 14:32:12,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:32:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2019-12-07 14:32:12,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 14:32:12,602 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:12,602 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:12,602 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2019-12-07 14:32:12,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:12,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462279134] [2019-12-07 14:32:12,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:12,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462279134] [2019-12-07 14:32:12,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:12,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:32:12,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259964829] [2019-12-07 14:32:12,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:32:12,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:12,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:32:12,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:12,636 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand 3 states. [2019-12-07 14:32:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:12,656 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2019-12-07 14:32:12,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:32:12,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-12-07 14:32:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:12,658 INFO L225 Difference]: With dead ends: 159 [2019-12-07 14:32:12,658 INFO L226 Difference]: Without dead ends: 103 [2019-12-07 14:32:12,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-12-07 14:32:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2019-12-07 14:32:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-12-07 14:32:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2019-12-07 14:32:12,671 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 23 [2019-12-07 14:32:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:12,671 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2019-12-07 14:32:12,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:32:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2019-12-07 14:32:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 14:32:12,673 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:12,673 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:12,673 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2019-12-07 14:32:12,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:12,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901550309] [2019-12-07 14:32:12,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:12,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901550309] [2019-12-07 14:32:12,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:12,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:32:12,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360833054] [2019-12-07 14:32:12,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:32:12,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:32:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:32:12,724 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand 5 states. [2019-12-07 14:32:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:12,791 INFO L93 Difference]: Finished difference Result 501 states and 748 transitions. [2019-12-07 14:32:12,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 14:32:12,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-12-07 14:32:12,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:12,795 INFO L225 Difference]: With dead ends: 501 [2019-12-07 14:32:12,795 INFO L226 Difference]: Without dead ends: 406 [2019-12-07 14:32:12,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:32:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-12-07 14:32:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 186. [2019-12-07 14:32:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-12-07 14:32:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 267 transitions. [2019-12-07 14:32:12,818 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 267 transitions. Word has length 25 [2019-12-07 14:32:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:12,819 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 267 transitions. [2019-12-07 14:32:12,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:32:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 267 transitions. [2019-12-07 14:32:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 14:32:12,820 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:12,820 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:12,820 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:12,821 INFO L82 PathProgramCache]: Analyzing trace with hash 740712497, now seen corresponding path program 1 times [2019-12-07 14:32:12,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:12,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332291563] [2019-12-07 14:32:12,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:12,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332291563] [2019-12-07 14:32:12,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:12,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:32:12,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254932087] [2019-12-07 14:32:12,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:32:12,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:32:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:32:12,875 INFO L87 Difference]: Start difference. First operand 186 states and 267 transitions. Second operand 5 states. [2019-12-07 14:32:12,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:12,975 INFO L93 Difference]: Finished difference Result 524 states and 758 transitions. [2019-12-07 14:32:12,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 14:32:12,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-12-07 14:32:12,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:12,979 INFO L225 Difference]: With dead ends: 524 [2019-12-07 14:32:12,980 INFO L226 Difference]: Without dead ends: 522 [2019-12-07 14:32:12,980 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:32:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2019-12-07 14:32:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 186. [2019-12-07 14:32:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-12-07 14:32:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 265 transitions. [2019-12-07 14:32:13,001 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 265 transitions. Word has length 26 [2019-12-07 14:32:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:13,001 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 265 transitions. [2019-12-07 14:32:13,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:32:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 265 transitions. [2019-12-07 14:32:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 14:32:13,003 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:13,003 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:13,004 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2030628178, now seen corresponding path program 1 times [2019-12-07 14:32:13,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:13,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837924320] [2019-12-07 14:32:13,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:13,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837924320] [2019-12-07 14:32:13,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:13,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 14:32:13,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299533067] [2019-12-07 14:32:13,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:32:13,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:32:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:32:13,050 INFO L87 Difference]: Start difference. First operand 186 states and 265 transitions. Second operand 5 states. [2019-12-07 14:32:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:13,097 INFO L93 Difference]: Finished difference Result 510 states and 719 transitions. [2019-12-07 14:32:13,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:32:13,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-12-07 14:32:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:13,099 INFO L225 Difference]: With dead ends: 510 [2019-12-07 14:32:13,100 INFO L226 Difference]: Without dead ends: 330 [2019-12-07 14:32:13,100 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:32:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2019-12-07 14:32:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 198. [2019-12-07 14:32:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-12-07 14:32:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 277 transitions. [2019-12-07 14:32:13,112 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 277 transitions. Word has length 30 [2019-12-07 14:32:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:13,113 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 277 transitions. [2019-12-07 14:32:13,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:32:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 277 transitions. [2019-12-07 14:32:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 14:32:13,114 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:13,114 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:13,114 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1637601168, now seen corresponding path program 1 times [2019-12-07 14:32:13,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:13,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131113093] [2019-12-07 14:32:13,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:13,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131113093] [2019-12-07 14:32:13,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:13,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:32:13,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382997928] [2019-12-07 14:32:13,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:32:13,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:13,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:32:13,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:32:13,144 INFO L87 Difference]: Start difference. First operand 198 states and 277 transitions. Second operand 4 states. [2019-12-07 14:32:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:13,173 INFO L93 Difference]: Finished difference Result 486 states and 674 transitions. [2019-12-07 14:32:13,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:32:13,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-12-07 14:32:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:13,175 INFO L225 Difference]: With dead ends: 486 [2019-12-07 14:32:13,175 INFO L226 Difference]: Without dead ends: 294 [2019-12-07 14:32:13,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:32:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-12-07 14:32:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 206. [2019-12-07 14:32:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-12-07 14:32:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 285 transitions. [2019-12-07 14:32:13,188 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 285 transitions. Word has length 30 [2019-12-07 14:32:13,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:13,188 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 285 transitions. [2019-12-07 14:32:13,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:32:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 285 transitions. [2019-12-07 14:32:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 14:32:13,189 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:13,189 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:13,189 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:13,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1895766606, now seen corresponding path program 1 times [2019-12-07 14:32:13,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:13,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376026781] [2019-12-07 14:32:13,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:32:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:32:13,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376026781] [2019-12-07 14:32:13,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:32:13,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:32:13,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339009832] [2019-12-07 14:32:13,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:32:13,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:32:13,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:32:13,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:13,226 INFO L87 Difference]: Start difference. First operand 206 states and 285 transitions. Second operand 3 states. [2019-12-07 14:32:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:32:13,250 INFO L93 Difference]: Finished difference Result 506 states and 694 transitions. [2019-12-07 14:32:13,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:32:13,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-12-07 14:32:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:32:13,252 INFO L225 Difference]: With dead ends: 506 [2019-12-07 14:32:13,252 INFO L226 Difference]: Without dead ends: 306 [2019-12-07 14:32:13,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:32:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-12-07 14:32:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2019-12-07 14:32:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2019-12-07 14:32:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 407 transitions. [2019-12-07 14:32:13,267 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 407 transitions. Word has length 30 [2019-12-07 14:32:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:32:13,267 INFO L462 AbstractCegarLoop]: Abstraction has 306 states and 407 transitions. [2019-12-07 14:32:13,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:32:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 407 transitions. [2019-12-07 14:32:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 14:32:13,268 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:32:13,268 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:32:13,268 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:32:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:32:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash -112049588, now seen corresponding path program 1 times [2019-12-07 14:32:13,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:32:13,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612362746] [2019-12-07 14:32:13,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:32:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:32:13,357 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:32:13,358 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:32:13,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:32:13 BoogieIcfgContainer [2019-12-07 14:32:13,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:32:13,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:32:13,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:32:13,420 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:32:13,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:32:12" (3/4) ... [2019-12-07 14:32:13,422 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:32:13,477 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c866541f-6021-488b-9730-c720a910d4b6/bin/uautomizer/witness.graphml [2019-12-07 14:32:13,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:32:13,479 INFO L168 Benchmark]: Toolchain (without parser) took 2154.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -80.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:32:13,479 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:32:13,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:32:13,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:32:13,479 INFO L168 Benchmark]: Boogie Preprocessor took 26.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:32:13,480 INFO L168 Benchmark]: RCFGBuilder took 437.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:32:13,480 INFO L168 Benchmark]: TraceAbstraction took 1272.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:32:13,480 INFO L168 Benchmark]: Witness Printer took 56.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:32:13,481 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 317.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 437.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1272.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 56.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] int retValue_acc ; [L907] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L344] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L346] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L231] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L68] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L75] COND TRUE \read(systemActive) [L97] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L100] COND TRUE ! pumpRunning [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L319] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L125] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L808] int tmp ; [L809] int tmp___0 ; [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] __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, 80 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 628 SDtfs, 711 SDslu, 859 SDs, 0 SdLazy, 107 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred 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, 782 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 9524 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...