./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.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_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/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 5f66ecd5f6aef5b29bc80dee4a57cabf0f421223 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:22:17,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:22:17,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:22:17,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:22:17,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:22:17,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:22:17,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:22:17,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:22:17,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:22:17,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:22:17,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:22:17,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:22:17,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:22:17,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:22:17,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:22:17,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:22:17,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:22:17,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:22:17,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:22:17,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:22:17,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:22:17,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:22:17,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:22:17,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:22:17,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:22:17,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:22:17,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:22:17,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:22:17,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:22:17,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:22:17,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:22:17,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:22:17,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:22:17,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:22:17,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:22:17,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:22:17,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:22:17,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:22:17,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:22:17,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:22:17,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:22:17,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:22:17,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:22:17,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:22:17,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:22:17,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:22:17,755 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:22:17,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:22:17,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:22:17,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:22:17,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:22:17,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:22:17,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:22:17,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:22:17,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:22:17,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:22:17,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:22:17,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:22:17,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:22:17,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:22:17,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:22:17,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:22:17,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:22:17,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:22:17,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:22:17,759 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_f92451a2-589b-44a1-b1db-b4a8cccabe3c/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 -> 5f66ecd5f6aef5b29bc80dee4a57cabf0f421223 [2019-12-07 10:22:17,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:22:17,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:22:17,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:22:17,873 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:22:17,873 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:22:17,874 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2019-12-07 10:22:17,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/data/6efb21f10/cc36b373b5ae47cc82ea2888d0409d83/FLAGf031f00b3 [2019-12-07 10:22:18,281 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:22:18,281 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2019-12-07 10:22:18,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/data/6efb21f10/cc36b373b5ae47cc82ea2888d0409d83/FLAGf031f00b3 [2019-12-07 10:22:18,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/data/6efb21f10/cc36b373b5ae47cc82ea2888d0409d83 [2019-12-07 10:22:18,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:22:18,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:22:18,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:22:18,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:22:18,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:22:18,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7762f741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18, skipping insertion in model container [2019-12-07 10:22:18,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:22:18,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:22:18,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:22:18,553 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:22:18,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:22:18,621 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:22:18,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18 WrapperNode [2019-12-07 10:22:18,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:22:18,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:22:18,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:22:18,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:22:18,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:22:18,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:22:18,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:22:18,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:22:18,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... [2019-12-07 10:22:18,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:22:18,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:22:18,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:22:18,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:22:18,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:22:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:22:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 10:22:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:22:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:22:19,182 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:22:19,182 INFO L287 CfgBuilder]: Removed 156 assume(true) statements. [2019-12-07 10:22:19,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:22:19 BoogieIcfgContainer [2019-12-07 10:22:19,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:22:19,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:22:19,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:22:19,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:22:19,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:22:18" (1/3) ... [2019-12-07 10:22:19,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df9aaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:22:19, skipping insertion in model container [2019-12-07 10:22:19,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:22:18" (2/3) ... [2019-12-07 10:22:19,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df9aaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:22:19, skipping insertion in model container [2019-12-07 10:22:19,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:22:19" (3/3) ... [2019-12-07 10:22:19,189 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2019-12-07 10:22:19,198 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:22:19,204 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 10:22:19,212 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 10:22:19,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:22:19,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:22:19,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:22:19,229 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:22:19,229 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:22:19,229 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:22:19,230 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:22:19,230 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:22:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2019-12-07 10:22:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 10:22:19,247 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:19,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:19,248 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:19,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1641629540, now seen corresponding path program 1 times [2019-12-07 10:22:19,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:19,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557160330] [2019-12-07 10:22:19,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:19,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557160330] [2019-12-07 10:22:19,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:19,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:22:19,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983320879] [2019-12-07 10:22:19,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 10:22:19,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 10:22:19,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:22:19,419 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 2 states. [2019-12-07 10:22:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:19,440 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2019-12-07 10:22:19,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 10:22:19,441 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 10:22:19,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:19,448 INFO L225 Difference]: With dead ends: 228 [2019-12-07 10:22:19,449 INFO L226 Difference]: Without dead ends: 113 [2019-12-07 10:22:19,451 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 10:22:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-12-07 10:22:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-12-07 10:22:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-12-07 10:22:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2019-12-07 10:22:19,481 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2019-12-07 10:22:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:19,481 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2019-12-07 10:22:19,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 10:22:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2019-12-07 10:22:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 10:22:19,482 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:19,482 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:19,483 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:19,483 INFO L82 PathProgramCache]: Analyzing trace with hash 594872643, now seen corresponding path program 1 times [2019-12-07 10:22:19,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:19,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879400863] [2019-12-07 10:22:19,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:19,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879400863] [2019-12-07 10:22:19,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:19,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:22:19,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118618589] [2019-12-07 10:22:19,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:22:19,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:22:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:22:19,545 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2019-12-07 10:22:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:19,553 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2019-12-07 10:22:19,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:22:19,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 10:22:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:19,554 INFO L225 Difference]: With dead ends: 113 [2019-12-07 10:22:19,555 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 10:22:19,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:22:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 10:22:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-12-07 10:22:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 10:22:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2019-12-07 10:22:19,560 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2019-12-07 10:22:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:19,560 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2019-12-07 10:22:19,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:22:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2019-12-07 10:22:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 10:22:19,561 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:19,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:19,561 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1404483435, now seen corresponding path program 1 times [2019-12-07 10:22:19,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:19,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713857867] [2019-12-07 10:22:19,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:19,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713857867] [2019-12-07 10:22:19,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:19,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:22:19,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223609723] [2019-12-07 10:22:19,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:22:19,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:19,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:22:19,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:22:19,623 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2019-12-07 10:22:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:19,697 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2019-12-07 10:22:19,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:22:19,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-12-07 10:22:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:19,698 INFO L225 Difference]: With dead ends: 88 [2019-12-07 10:22:19,698 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 10:22:19,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 10:22:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 10:22:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-12-07 10:22:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 10:22:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2019-12-07 10:22:19,705 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2019-12-07 10:22:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:19,705 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2019-12-07 10:22:19,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:22:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2019-12-07 10:22:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 10:22:19,706 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:19,706 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] [2019-12-07 10:22:19,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash -764351347, now seen corresponding path program 1 times [2019-12-07 10:22:19,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:19,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437478274] [2019-12-07 10:22:19,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:19,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437478274] [2019-12-07 10:22:19,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:19,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:22:19,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998807844] [2019-12-07 10:22:19,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:22:19,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:22:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:22:19,750 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2019-12-07 10:22:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:19,773 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2019-12-07 10:22:19,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:22:19,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 10:22:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:19,774 INFO L225 Difference]: With dead ends: 109 [2019-12-07 10:22:19,774 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 10:22:19,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:22:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 10:22:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-12-07 10:22:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 10:22:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2019-12-07 10:22:19,781 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2019-12-07 10:22:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:19,782 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2019-12-07 10:22:19,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:22:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2019-12-07 10:22:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:22:19,783 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:19,783 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:19,783 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:19,783 INFO L82 PathProgramCache]: Analyzing trace with hash -805303330, now seen corresponding path program 1 times [2019-12-07 10:22:19,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:19,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037723073] [2019-12-07 10:22:19,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:19,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037723073] [2019-12-07 10:22:19,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:19,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:22:19,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083075096] [2019-12-07 10:22:19,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:22:19,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:19,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:22:19,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:22:19,824 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2019-12-07 10:22:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:19,868 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2019-12-07 10:22:19,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:22:19,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-12-07 10:22:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:19,869 INFO L225 Difference]: With dead ends: 175 [2019-12-07 10:22:19,869 INFO L226 Difference]: Without dead ends: 115 [2019-12-07 10:22:19,870 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:22:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-12-07 10:22:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2019-12-07 10:22:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 10:22:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2019-12-07 10:22:19,876 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2019-12-07 10:22:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:19,876 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2019-12-07 10:22:19,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:22:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2019-12-07 10:22:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:22:19,877 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:19,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:19,877 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:19,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1857207713, now seen corresponding path program 1 times [2019-12-07 10:22:19,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:19,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656313570] [2019-12-07 10:22:19,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:19,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656313570] [2019-12-07 10:22:19,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:19,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:22:19,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466476334] [2019-12-07 10:22:19,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:22:19,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:19,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:22:19,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:22:19,922 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2019-12-07 10:22:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:20,007 INFO L93 Difference]: Finished difference Result 204 states and 283 transitions. [2019-12-07 10:22:20,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 10:22:20,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-12-07 10:22:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:20,009 INFO L225 Difference]: With dead ends: 204 [2019-12-07 10:22:20,009 INFO L226 Difference]: Without dead ends: 202 [2019-12-07 10:22:20,010 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 10:22:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-12-07 10:22:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 72. [2019-12-07 10:22:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 10:22:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2019-12-07 10:22:20,021 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 30 [2019-12-07 10:22:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:20,021 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2019-12-07 10:22:20,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:22:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2019-12-07 10:22:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:22:20,022 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:20,022 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:20,022 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:20,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:20,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1198330340, now seen corresponding path program 1 times [2019-12-07 10:22:20,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:20,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872405719] [2019-12-07 10:22:20,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:20,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872405719] [2019-12-07 10:22:20,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:20,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 10:22:20,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365193733] [2019-12-07 10:22:20,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:22:20,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:20,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:22:20,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:22:20,077 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2019-12-07 10:22:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:20,147 INFO L93 Difference]: Finished difference Result 188 states and 256 transitions. [2019-12-07 10:22:20,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 10:22:20,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-12-07 10:22:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:20,149 INFO L225 Difference]: With dead ends: 188 [2019-12-07 10:22:20,149 INFO L226 Difference]: Without dead ends: 122 [2019-12-07 10:22:20,149 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:22:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-07 10:22:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 76. [2019-12-07 10:22:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 10:22:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2019-12-07 10:22:20,156 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 30 [2019-12-07 10:22:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:20,157 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2019-12-07 10:22:20,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:22:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2019-12-07 10:22:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:22:20,157 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:20,158 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:20,158 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash -940164902, now seen corresponding path program 1 times [2019-12-07 10:22:20,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:20,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134564511] [2019-12-07 10:22:20,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:20,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134564511] [2019-12-07 10:22:20,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:20,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:22:20,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699752504] [2019-12-07 10:22:20,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:22:20,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:22:20,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:22:20,187 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand 3 states. [2019-12-07 10:22:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:20,208 INFO L93 Difference]: Finished difference Result 172 states and 232 transitions. [2019-12-07 10:22:20,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:22:20,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-12-07 10:22:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:20,210 INFO L225 Difference]: With dead ends: 172 [2019-12-07 10:22:20,210 INFO L226 Difference]: Without dead ends: 102 [2019-12-07 10:22:20,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:22:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-12-07 10:22:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-12-07 10:22:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-12-07 10:22:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 134 transitions. [2019-12-07 10:22:20,222 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 134 transitions. Word has length 30 [2019-12-07 10:22:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:20,223 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 134 transitions. [2019-12-07 10:22:20,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:22:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 134 transitions. [2019-12-07 10:22:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 10:22:20,224 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:20,224 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:20,224 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:20,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1346986200, now seen corresponding path program 1 times [2019-12-07 10:22:20,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:20,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057359189] [2019-12-07 10:22:20,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:22:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:22:20,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057359189] [2019-12-07 10:22:20,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:22:20,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:22:20,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756755689] [2019-12-07 10:22:20,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:22:20,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:22:20,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:22:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:22:20,312 INFO L87 Difference]: Start difference. First operand 102 states and 134 transitions. Second operand 5 states. [2019-12-07 10:22:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:22:20,392 INFO L93 Difference]: Finished difference Result 553 states and 737 transitions. [2019-12-07 10:22:20,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 10:22:20,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 10:22:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:22:20,395 INFO L225 Difference]: With dead ends: 553 [2019-12-07 10:22:20,395 INFO L226 Difference]: Without dead ends: 457 [2019-12-07 10:22:20,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 10:22:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-12-07 10:22:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 190. [2019-12-07 10:22:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-12-07 10:22:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2019-12-07 10:22:20,416 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2019-12-07 10:22:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:22:20,416 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2019-12-07 10:22:20,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:22:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2019-12-07 10:22:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 10:22:20,417 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:22:20,417 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:22:20,417 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:22:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:22:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1913811026, now seen corresponding path program 1 times [2019-12-07 10:22:20,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:22:20,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908156642] [2019-12-07 10:22:20,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:22:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:22:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:22:20,520 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:22:20,520 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:22:20,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:22:20 BoogieIcfgContainer [2019-12-07 10:22:20,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:22:20,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:22:20,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:22:20,599 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:22:20,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:22:19" (3/4) ... [2019-12-07 10:22:20,602 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 10:22:20,673 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f92451a2-589b-44a1-b1db-b4a8cccabe3c/bin/uautomizer/witness.graphml [2019-12-07 10:22:20,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:22:20,674 INFO L168 Benchmark]: Toolchain (without parser) took 2372.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 942.5 MB in the beginning and 1.0 GB in the end (delta: -72.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:22:20,675 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:22:20,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:22:20,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:22:20,676 INFO L168 Benchmark]: Boogie Preprocessor took 29.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:22:20,676 INFO L168 Benchmark]: RCFGBuilder took 485.71 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: 65.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:22:20,676 INFO L168 Benchmark]: TraceAbstraction took 1414.61 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: -15.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:22:20,676 INFO L168 Benchmark]: Witness Printer took 73.86 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-12-07 10:22:20,678 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.08 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 29.87 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 485.71 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: 65.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1414.61 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: -15.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 73.86 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L150] int retValue_acc ; [L151] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L752] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L754] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L552] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L559] COND TRUE \read(systemActive) [L607] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L610] COND FALSE !(\read(pumpRunning)) [L581] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND TRUE ! pumpRunning [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L923] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L635] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] 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) [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] 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] [L950] __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, 117 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1231 SDslu, 1056 SDs, 0 SdLazy, 148 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 488 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 12174 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...