./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/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 982cd7c832ad69be85d11abb6d88a1915810e691 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:30:05,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:30:05,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:30:05,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:30:05,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:30:05,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:30:05,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:30:05,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:30:05,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:30:05,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:30:05,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:30:05,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:30:05,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:30:05,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:30:05,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:30:05,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:30:05,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:30:05,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:30:05,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:30:05,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:30:05,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:30:05,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:30:05,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:30:05,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:30:05,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:30:05,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:30:05,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:30:05,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:30:05,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:30:05,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:30:05,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:30:05,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:30:05,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:30:05,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:30:05,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:30:05,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:30:05,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:30:05,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:30:05,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:30:05,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:30:05,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:30:05,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:30:05,650 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:30:05,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:30:05,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:30:05,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:30:05,653 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:30:05,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:30:05,653 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:30:05,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:30:05,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:30:05,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:30:05,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:30:05,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:30:05,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:30:05,656 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:30:05,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:30:05,657 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:30:05,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:30:05,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:30:05,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:30:05,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:30:05,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:30:05,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:30:05,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:30:05,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:30:05,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:30:05,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:30:05,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:30:05,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:30:05,661 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_efc02539-6cd1-4a98-900f-b6dcff07b3c5/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 -> 982cd7c832ad69be85d11abb6d88a1915810e691 [2019-11-15 20:30:05,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:30:05,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:30:05,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:30:05,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:30:05,741 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:30:05,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-11-15 20:30:05,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/data/fdb38a94a/e78bb6a603a2466a9fbf4441faa788cc/FLAG396a0ebc4 [2019-11-15 20:30:06,329 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:30:06,330 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-11-15 20:30:06,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/data/fdb38a94a/e78bb6a603a2466a9fbf4441faa788cc/FLAG396a0ebc4 [2019-11-15 20:30:06,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/data/fdb38a94a/e78bb6a603a2466a9fbf4441faa788cc [2019-11-15 20:30:06,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:30:06,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:30:06,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:30:06,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:30:06,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:30:06,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:30:06" (1/1) ... [2019-11-15 20:30:06,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544e8593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:06, skipping insertion in model container [2019-11-15 20:30:06,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:30:06" (1/1) ... [2019-11-15 20:30:06,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:30:06,663 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:30:07,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:30:07,102 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:30:07,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:30:07,250 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:30:07,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07 WrapperNode [2019-11-15 20:30:07,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:30:07,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:30:07,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:30:07,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:30:07,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:30:07,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:30:07,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:30:07,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:30:07,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... [2019-11-15 20:30:07,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:30:07,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:30:07,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:30:07,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:30:07,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:30:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:30:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 20:30:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:30:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:30:08,788 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:30:08,788 INFO L284 CfgBuilder]: Removed 196 assume(true) statements. [2019-11-15 20:30:08,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:30:08 BoogieIcfgContainer [2019-11-15 20:30:08,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:30:08,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:30:08,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:30:08,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:30:08,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:30:06" (1/3) ... [2019-11-15 20:30:08,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc9ab10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:30:08, skipping insertion in model container [2019-11-15 20:30:08,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:30:07" (2/3) ... [2019-11-15 20:30:08,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc9ab10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:30:08, skipping insertion in model container [2019-11-15 20:30:08,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:30:08" (3/3) ... [2019-11-15 20:30:08,803 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2019-11-15 20:30:08,814 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:30:08,829 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-15 20:30:08,842 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-15 20:30:08,874 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:30:08,875 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:30:08,875 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:30:08,875 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:30:08,875 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:30:08,876 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:30:08,877 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:30:08,877 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:30:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-11-15 20:30:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:30:08,917 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:08,918 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:08,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:08,925 INFO L82 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2019-11-15 20:30:08,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:08,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920295692] [2019-11-15 20:30:08,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:08,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:08,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:09,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920295692] [2019-11-15 20:30:09,200 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:09,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:30:09,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928547596] [2019-11-15 20:30:09,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 20:30:09,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:09,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 20:30:09,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:30:09,217 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-11-15 20:30:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:09,258 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-11-15 20:30:09,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:30:09,259 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-15 20:30:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:09,273 INFO L225 Difference]: With dead ends: 256 [2019-11-15 20:30:09,273 INFO L226 Difference]: Without dead ends: 127 [2019-11-15 20:30:09,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:30:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-15 20:30:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-11-15 20:30:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 20:30:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-11-15 20:30:09,332 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-11-15 20:30:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:09,332 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-11-15 20:30:09,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 20:30:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-11-15 20:30:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 20:30:09,334 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:09,334 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:09,335 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:09,335 INFO L82 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2019-11-15 20:30:09,335 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:09,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947671627] [2019-11-15 20:30:09,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:09,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:09,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:09,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947671627] [2019-11-15 20:30:09,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:09,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:30:09,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104276832] [2019-11-15 20:30:09,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:30:09,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:09,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:30:09,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:30:09,450 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 3 states. [2019-11-15 20:30:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:09,466 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2019-11-15 20:30:09,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:30:09,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-15 20:30:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:09,468 INFO L225 Difference]: With dead ends: 127 [2019-11-15 20:30:09,468 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 20:30:09,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:30:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 20:30:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-15 20:30:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-15 20:30:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-11-15 20:30:09,478 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2019-11-15 20:30:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:09,478 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-11-15 20:30:09,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:30:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-11-15 20:30:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 20:30:09,480 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:09,480 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:09,480 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash 445162074, now seen corresponding path program 1 times [2019-11-15 20:30:09,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:09,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452971315] [2019-11-15 20:30:09,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:09,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:09,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:09,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452971315] [2019-11-15 20:30:09,627 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:09,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:30:09,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559495026] [2019-11-15 20:30:09,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:30:09,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:30:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:30:09,630 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 6 states. [2019-11-15 20:30:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:09,851 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2019-11-15 20:30:09,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:30:09,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-15 20:30:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:09,856 INFO L225 Difference]: With dead ends: 170 [2019-11-15 20:30:09,856 INFO L226 Difference]: Without dead ends: 123 [2019-11-15 20:30:09,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:30:09,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-11-15 20:30:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2019-11-15 20:30:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 20:30:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2019-11-15 20:30:09,890 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2019-11-15 20:30:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:09,891 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2019-11-15 20:30:09,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:30:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2019-11-15 20:30:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 20:30:09,893 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:09,893 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:09,893 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:09,894 INFO L82 PathProgramCache]: Analyzing trace with hash 96758808, now seen corresponding path program 1 times [2019-11-15 20:30:09,894 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:09,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529413863] [2019-11-15 20:30:09,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:09,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:09,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:10,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529413863] [2019-11-15 20:30:10,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:10,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:30:10,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843495072] [2019-11-15 20:30:10,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:30:10,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:10,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:30:10,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:30:10,045 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2019-11-15 20:30:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:10,096 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2019-11-15 20:30:10,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:30:10,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-15 20:30:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:10,098 INFO L225 Difference]: With dead ends: 159 [2019-11-15 20:30:10,098 INFO L226 Difference]: Without dead ends: 93 [2019-11-15 20:30:10,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:30:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-15 20:30:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-11-15 20:30:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-15 20:30:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-11-15 20:30:10,112 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2019-11-15 20:30:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:10,113 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-11-15 20:30:10,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:30:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-11-15 20:30:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 20:30:10,115 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:10,115 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:10,115 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:10,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:10,116 INFO L82 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2019-11-15 20:30:10,116 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:10,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143779174] [2019-11-15 20:30:10,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:10,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:10,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:10,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143779174] [2019-11-15 20:30:10,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:10,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:30:10,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468526889] [2019-11-15 20:30:10,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:30:10,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:10,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:30:10,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:30:10,283 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 5 states. [2019-11-15 20:30:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:10,432 INFO L93 Difference]: Finished difference Result 325 states and 468 transitions. [2019-11-15 20:30:10,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:30:10,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-15 20:30:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:10,436 INFO L225 Difference]: With dead ends: 325 [2019-11-15 20:30:10,436 INFO L226 Difference]: Without dead ends: 240 [2019-11-15 20:30:10,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:30:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-11-15 20:30:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 153. [2019-11-15 20:30:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-15 20:30:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 212 transitions. [2019-11-15 20:30:10,485 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 212 transitions. Word has length 25 [2019-11-15 20:30:10,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:10,486 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 212 transitions. [2019-11-15 20:30:10,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:30:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 212 transitions. [2019-11-15 20:30:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 20:30:10,492 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:10,492 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:10,493 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1602914161, now seen corresponding path program 1 times [2019-11-15 20:30:10,494 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:10,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806262551] [2019-11-15 20:30:10,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:10,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:10,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:10,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806262551] [2019-11-15 20:30:10,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:10,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:30:10,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260115412] [2019-11-15 20:30:10,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:30:10,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:30:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:30:10,593 INFO L87 Difference]: Start difference. First operand 153 states and 212 transitions. Second operand 5 states. [2019-11-15 20:30:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:10,795 INFO L93 Difference]: Finished difference Result 321 states and 453 transitions. [2019-11-15 20:30:10,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 20:30:10,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-15 20:30:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:10,799 INFO L225 Difference]: With dead ends: 321 [2019-11-15 20:30:10,799 INFO L226 Difference]: Without dead ends: 319 [2019-11-15 20:30:10,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:30:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2019-11-15 20:30:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 153. [2019-11-15 20:30:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-15 20:30:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2019-11-15 20:30:10,835 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 26 [2019-11-15 20:30:10,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:10,835 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2019-11-15 20:30:10,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:30:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2019-11-15 20:30:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 20:30:10,840 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:10,841 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:10,848 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:10,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:10,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1235666169, now seen corresponding path program 1 times [2019-11-15 20:30:10,849 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:10,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531673993] [2019-11-15 20:30:10,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:10,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:10,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:10,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531673993] [2019-11-15 20:30:10,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:10,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:30:10,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466078104] [2019-11-15 20:30:10,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:30:10,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:10,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:30:10,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:30:10,930 INFO L87 Difference]: Start difference. First operand 153 states and 210 transitions. Second operand 4 states. [2019-11-15 20:30:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:11,034 INFO L93 Difference]: Finished difference Result 459 states and 638 transitions. [2019-11-15 20:30:11,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:30:11,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-11-15 20:30:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:11,038 INFO L225 Difference]: With dead ends: 459 [2019-11-15 20:30:11,039 INFO L226 Difference]: Without dead ends: 374 [2019-11-15 20:30:11,040 INFO L600 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 [2019-11-15 20:30:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2019-11-15 20:30:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 157. [2019-11-15 20:30:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-11-15 20:30:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2019-11-15 20:30:11,090 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 34 [2019-11-15 20:30:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:11,091 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2019-11-15 20:30:11,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:30:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2019-11-15 20:30:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 20:30:11,092 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:11,092 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:11,093 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:11,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:11,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1822472183, now seen corresponding path program 1 times [2019-11-15 20:30:11,093 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:11,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066008829] [2019-11-15 20:30:11,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:11,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066008829] [2019-11-15 20:30:11,165 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:11,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:30:11,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940069055] [2019-11-15 20:30:11,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:30:11,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:30:11,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:30:11,167 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand 5 states. [2019-11-15 20:30:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:11,338 INFO L93 Difference]: Finished difference Result 388 states and 543 transitions. [2019-11-15 20:30:11,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:30:11,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-11-15 20:30:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:11,342 INFO L225 Difference]: With dead ends: 388 [2019-11-15 20:30:11,342 INFO L226 Difference]: Without dead ends: 299 [2019-11-15 20:30:11,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:30:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2019-11-15 20:30:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 222. [2019-11-15 20:30:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2019-11-15 20:30:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2019-11-15 20:30:11,375 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 34 [2019-11-15 20:30:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:11,375 INFO L462 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2019-11-15 20:30:11,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:30:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2019-11-15 20:30:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 20:30:11,377 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:11,377 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:11,377 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:11,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:11,378 INFO L82 PathProgramCache]: Analyzing trace with hash 44197509, now seen corresponding path program 1 times [2019-11-15 20:30:11,378 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:11,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581229246] [2019-11-15 20:30:11,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,379 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:11,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581229246] [2019-11-15 20:30:11,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:11,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:30:11,434 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685099044] [2019-11-15 20:30:11,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:30:11,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:11,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:30:11,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:30:11,435 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand 5 states. [2019-11-15 20:30:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:11,543 INFO L93 Difference]: Finished difference Result 660 states and 894 transitions. [2019-11-15 20:30:11,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:30:11,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-11-15 20:30:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:11,547 INFO L225 Difference]: With dead ends: 660 [2019-11-15 20:30:11,547 INFO L226 Difference]: Without dead ends: 444 [2019-11-15 20:30:11,548 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:30:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-11-15 20:30:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 231. [2019-11-15 20:30:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-11-15 20:30:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 310 transitions. [2019-11-15 20:30:11,580 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 310 transitions. Word has length 34 [2019-11-15 20:30:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:11,581 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 310 transitions. [2019-11-15 20:30:11,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:30:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 310 transitions. [2019-11-15 20:30:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 20:30:11,582 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:11,582 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:11,583 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash -542608505, now seen corresponding path program 1 times [2019-11-15 20:30:11,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:11,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481562812] [2019-11-15 20:30:11,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:11,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481562812] [2019-11-15 20:30:11,661 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:30:11,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:30:11,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793998648] [2019-11-15 20:30:11,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:30:11,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:11,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:30:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:30:11,663 INFO L87 Difference]: Start difference. First operand 231 states and 310 transitions. Second operand 6 states. [2019-11-15 20:30:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:11,778 INFO L93 Difference]: Finished difference Result 523 states and 704 transitions. [2019-11-15 20:30:11,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:30:11,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-15 20:30:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:11,781 INFO L225 Difference]: With dead ends: 523 [2019-11-15 20:30:11,781 INFO L226 Difference]: Without dead ends: 298 [2019-11-15 20:30:11,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:30:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-11-15 20:30:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 197. [2019-11-15 20:30:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-11-15 20:30:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 260 transitions. [2019-11-15 20:30:11,811 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 260 transitions. Word has length 34 [2019-11-15 20:30:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:11,811 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 260 transitions. [2019-11-15 20:30:11,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:30:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 260 transitions. [2019-11-15 20:30:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 20:30:11,812 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:11,813 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:11,813 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:11,814 INFO L82 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2019-11-15 20:30:11,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:11,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874134241] [2019-11-15 20:30:11,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:11,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:11,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874134241] [2019-11-15 20:30:11,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129752032] [2019-11-15 20:30:11,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:30:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:30:12,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:30:12,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:30:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:30:12,143 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:30:12,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-15 20:30:12,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573197048] [2019-11-15 20:30:12,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:30:12,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:30:12,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:30:12,145 INFO L87 Difference]: Start difference. First operand 197 states and 260 transitions. Second operand 6 states. [2019-11-15 20:30:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:12,421 INFO L93 Difference]: Finished difference Result 589 states and 795 transitions. [2019-11-15 20:30:12,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 20:30:12,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2019-11-15 20:30:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:12,427 INFO L225 Difference]: With dead ends: 589 [2019-11-15 20:30:12,427 INFO L226 Difference]: Without dead ends: 440 [2019-11-15 20:30:12,428 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:30:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-11-15 20:30:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 268. [2019-11-15 20:30:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-11-15 20:30:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 357 transitions. [2019-11-15 20:30:12,475 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 357 transitions. Word has length 53 [2019-11-15 20:30:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:12,476 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 357 transitions. [2019-11-15 20:30:12,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:30:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 357 transitions. [2019-11-15 20:30:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-15 20:30:12,478 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:30:12,478 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:30:12,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:30:12,684 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:30:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:30:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1809371945, now seen corresponding path program 2 times [2019-11-15 20:30:12,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:30:12,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812424345] [2019-11-15 20:30:12,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:12,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:30:12,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:30:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:30:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:30:13,574 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:30:13,574 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:30:13,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:30:13 BoogieIcfgContainer [2019-11-15 20:30:13,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:30:13,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:30:13,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:30:13,789 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:30:13,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:30:08" (3/4) ... [2019-11-15 20:30:13,793 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 20:30:14,000 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efc02539-6cd1-4a98-900f-b6dcff07b3c5/bin/uautomizer/witness.graphml [2019-11-15 20:30:14,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:30:14,003 INFO L168 Benchmark]: Toolchain (without parser) took 7416.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -93.8 MB). Peak memory consumption was 104.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,003 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:30:14,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,004 INFO L168 Benchmark]: Boogie Preprocessor took 118.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,005 INFO L168 Benchmark]: RCFGBuilder took 1272.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,005 INFO L168 Benchmark]: TraceAbstraction took 4997.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.3 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -22.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,006 INFO L168 Benchmark]: Witness Printer took 211.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:14,008 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 664.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 145.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 118.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1272.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4997.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.3 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -22.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 211.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 828]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L219] int pumpRunning = 0; [L220] int systemActive = 1; [L599] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L868] int waterLevel = 1; [L869] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] COND TRUE waterLevel < 2 [L887] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L285] COND FALSE !(\read(pumpRunning)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L259] COND TRUE ! pumpRunning [L396] int retValue_acc ; [L397] int tmp ; [L398] int tmp___0 ; [L948] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L951] COND FALSE !(waterLevel < 2) [L955] retValue_acc = 0 [L956] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L402] tmp = isHighWaterSensorDry() [L404] COND FALSE !(\read(tmp)) [L407] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L409] retValue_acc = tmp___0 [L410] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L261] tmp = isHighWaterLevel() [L263] COND TRUE \read(tmp) [L315] int tmp ; [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L319] tmp = isMethaneAlarm() [L321] COND FALSE !(\read(tmp)) [L310] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L804] tmp = getWaterLevel() [L806] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] tmp = __VERIFIER_nondet_int() [L165] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L227] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L874] COND TRUE waterLevel > 0 [L875] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L285] COND TRUE \read(pumpRunning) [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L287] tmp = isMethaneAlarm() [L289] COND FALSE !(\read(tmp)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L259] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L804] tmp = getWaterLevel() [L806] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L227] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L874] COND TRUE waterLevel > 0 [L875] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L285] COND TRUE \read(pumpRunning) [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L287] tmp = isMethaneAlarm() [L289] COND FALSE !(\read(tmp)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L259] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L804] tmp = getWaterLevel() [L806] COND TRUE tmp == 0 [L351] int retValue_acc ; [L354] retValue_acc = pumpRunning [L355] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L808] tmp___0 = isPumpRunning() [L810] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L828] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Result: UNSAFE, OverallTime: 4.9s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1371 SDtfs, 1873 SDslu, 2130 SDs, 0 SdLazy, 283 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1086 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 23957 SizeOfPredicates, 4 NumberOfNonLiveVariables, 409 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 22/28 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...