./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8b3f04ec92be96a6d3b17ca538a3be31737a820 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-22 13:08:03,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:03,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:03,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:03,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:03,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:03,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:03,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:03,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:03,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:03,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:03,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:03,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:03,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:03,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:03,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:03,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:03,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:03,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:03,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:03,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:03,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:03,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:03,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:03,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:03,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:03,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:03,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:03,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:03,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:03,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:03,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:03,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:03,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:03,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:03,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:03,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:03,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:03,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:03,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:03,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:03,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:08:03,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:03,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:03,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:03,778 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:03,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:03,778 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:03,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:03,779 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:03,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:03,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:03,781 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:03,781 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:03,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:03,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:03,782 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:03,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:03,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:03,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:03,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:03,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:03,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:03,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:03,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:03,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:03,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:03,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:03,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:03,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:03,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:03,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:03,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:03,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:03,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:03,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:03,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:03,790 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:03,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:03,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:03,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:03,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:03,791 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b3f04ec92be96a6d3b17ca538a3be31737a820 [2020-11-22 13:08:04,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:04,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:04,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:04,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:04,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:04,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound1.c [2020-11-22 13:08:04,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/data/e66f90e3c/3345657cdf5c42d380f032de3bf1adc4/FLAGdd50d8368 [2020-11-22 13:08:04,670 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:04,671 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound1.c [2020-11-22 13:08:04,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/data/e66f90e3c/3345657cdf5c42d380f032de3bf1adc4/FLAGdd50d8368 [2020-11-22 13:08:05,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/data/e66f90e3c/3345657cdf5c42d380f032de3bf1adc4 [2020-11-22 13:08:05,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:05,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:05,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:05,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:05,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:05,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512c184b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05, skipping insertion in model container [2020-11-22 13:08:05,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:05,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:05,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:05,278 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:05,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:05,328 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:05,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05 WrapperNode [2020-11-22 13:08:05,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:05,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:05,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:05,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:05,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:05,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:05,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:05,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:05,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2020-11-22 13:08:05,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:05,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:05,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:05,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:05,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/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 [2020-11-22 13:08:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:08:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:05,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:05,984 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-22 13:08:05,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:05 BoogieIcfgContainer [2020-11-22 13:08:05,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:05,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:05,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:05,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:05" (1/3) ... [2020-11-22 13:08:05,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb8c362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:05, skipping insertion in model container [2020-11-22 13:08:05,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (2/3) ... [2020-11-22 13:08:05,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb8c362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:05, skipping insertion in model container [2020-11-22 13:08:05,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:05" (3/3) ... [2020-11-22 13:08:05,995 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound1.c [2020-11-22 13:08:06,008 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:06,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:08:06,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:08:06,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:06,049 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:06,049 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:06,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:06,050 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:06,050 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:06,050 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:06,050 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-22 13:08:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:08:06,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:06,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:08:06,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 91861638, now seen corresponding path program 1 times [2020-11-22 13:08:06,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:06,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261615991] [2020-11-22 13:08:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:06,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261615991] [2020-11-22 13:08:06,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:06,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:06,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511166457] [2020-11-22 13:08:06,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:08:06,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:06,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:08:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:08:06,231 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-22 13:08:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:06,284 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-11-22 13:08:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:08:06,286 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:08:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:06,303 INFO L225 Difference]: With dead ends: 25 [2020-11-22 13:08:06,303 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 13:08:06,306 INFO L677 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 [2020-11-22 13:08:06,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 13:08:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 13:08:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:08:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-22 13:08:06,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-11-22 13:08:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:06,337 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-22 13:08:06,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:08:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-22 13:08:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:08:06,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:06,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:08:06,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:08:06,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:06,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash 90941097, now seen corresponding path program 1 times [2020-11-22 13:08:06,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:06,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354356779] [2020-11-22 13:08:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:06,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:06,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411767103] [2020-11-22 13:08:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/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 [2020-11-22 13:08:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:06,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:08:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:06,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:06,514 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:08:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:06,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354356779] [2020-11-22 13:08:06,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:06,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411767103] [2020-11-22 13:08:06,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:06,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:08:06,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582441293] [2020-11-22 13:08:06,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:08:06,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:06,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:08:06,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:08:06,548 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-22 13:08:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:07,393 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-22 13:08:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:08:07,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-22 13:08:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:07,396 INFO L225 Difference]: With dead ends: 25 [2020-11-22 13:08:07,396 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:08:07,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:08:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:08:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2020-11-22 13:08:07,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 13:08:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-22 13:08:07,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-11-22 13:08:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:07,402 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-22 13:08:07,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:08:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-22 13:08:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:08:07,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:07,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:08:07,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:08:07,604 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:07,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:07,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1475828981, now seen corresponding path program 1 times [2020-11-22 13:08:07,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:07,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945586574] [2020-11-22 13:08:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:07,619 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:07,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704583405] [2020-11-22 13:08:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:08:07,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:07,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:07,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945586574] [2020-11-22 13:08:07,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:07,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704583405] [2020-11-22 13:08:07,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:07,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:08:07,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082413800] [2020-11-22 13:08:07,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:07,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:07,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:07,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:07,701 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-11-22 13:08:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:07,727 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-22 13:08:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:07,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:08:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:07,729 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:08:07,729 INFO L226 Difference]: Without dead ends: 14 [2020-11-22 13:08:07,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-22 13:08:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-22 13:08:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 13:08:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-11-22 13:08:07,733 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2020-11-22 13:08:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:07,734 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-11-22 13:08:07,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-11-22 13:08:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:08:07,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:07,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:07,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:07,949 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:07,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:07,949 INFO L82 PathProgramCache]: Analyzing trace with hash -892288028, now seen corresponding path program 1 times [2020-11-22 13:08:07,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:07,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121289104] [2020-11-22 13:08:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:07,962 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:07,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315091524] [2020-11-22 13:08:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:08,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:08:08,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:08,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:08,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121289104] [2020-11-22 13:08:08,056 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:08,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315091524] [2020-11-22 13:08:08,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:08,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:08:08,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318237285] [2020-11-22 13:08:08,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:08,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:08,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:08,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:08,059 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2020-11-22 13:08:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:08,080 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-22 13:08:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:08,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 13:08:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:08,089 INFO L225 Difference]: With dead ends: 19 [2020-11-22 13:08:08,089 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 13:08:08,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 13:08:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 13:08:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:08:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-22 13:08:08,093 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2020-11-22 13:08:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:08,093 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-22 13:08:08,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-22 13:08:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:08:08,094 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:08,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-22 13:08:08,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:08,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1857937832, now seen corresponding path program 1 times [2020-11-22 13:08:08,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:08,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755870938] [2020-11-22 13:08:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:08,322 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:08,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797188025] [2020-11-22 13:08:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:08,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:08:08,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:08,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:08,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755870938] [2020-11-22 13:08:08,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:08,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797188025] [2020-11-22 13:08:08,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1470275668] [2020-11-22 13:08:08,456 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:08:08,456 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:08:08,461 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:08:08,466 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:08:08,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:08:08,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:08:10,027 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:08:10,199 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:10,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:08:10,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-22 13:08:10,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658747954] [2020-11-22 13:08:10,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:08:10,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:10,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:08:10,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:08:10,201 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-11-22 13:08:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:10,232 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-22 13:08:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:08:10,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:08:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:10,235 INFO L225 Difference]: With dead ends: 21 [2020-11-22 13:08:10,235 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 13:08:10,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:08:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 13:08:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 13:08:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:08:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-22 13:08:10,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 9 [2020-11-22 13:08:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:10,238 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-22 13:08:10,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:08:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-22 13:08:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:08:10,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:10,239 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:10,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:10,440 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:08:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1761533636, now seen corresponding path program 1 times [2020-11-22 13:08:10,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:10,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221584373] [2020-11-22 13:08:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:10,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:10,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875651198] [2020-11-22 13:08:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:10,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:10,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:10,598 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:08:10,598 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:08:10,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-22 13:08:10,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:10 BoogieIcfgContainer [2020-11-22 13:08:10,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:10,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:10,823 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:10,823 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:10,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:05" (3/4) ... [2020-11-22 13:08:10,825 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:08:10,877 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_35324e9b-f82a-4f88-bda8-d177db1f0ede/bin/utaipan/witness.graphml [2020-11-22 13:08:10,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:10,878 INFO L168 Benchmark]: Toolchain (without parser) took 5840.31 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 60.7 MB in the beginning and 69.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:10,879 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 51.3 MB in the beginning and 51.3 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:10,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.14 ms. Allocated memory is still 90.2 MB. Free memory was 60.4 MB in the beginning and 68.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:10,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.37 ms. Allocated memory is still 90.2 MB. Free memory was 68.3 MB in the beginning and 67.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:10,881 INFO L168 Benchmark]: Boogie Preprocessor took 32.53 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:10,881 INFO L168 Benchmark]: RCFGBuilder took 573.56 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 46.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:10,882 INFO L168 Benchmark]: TraceAbstraction took 4833.87 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 45.7 MB in the beginning and 71.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:10,882 INFO L168 Benchmark]: Witness Printer took 54.59 ms. Allocated memory is still 151.0 MB. Free memory was 71.6 MB in the beginning and 69.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:10,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 51.3 MB in the beginning and 51.3 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.14 ms. Allocated memory is still 90.2 MB. Free memory was 60.4 MB in the beginning and 68.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.37 ms. Allocated memory is still 90.2 MB. Free memory was 68.3 MB in the beginning and 67.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.53 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 573.56 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 46.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4833.87 ms. Allocated memory was 90.2 MB in the beginning and 151.0 MB in the end (delta: 60.8 MB). Free memory was 45.7 MB in the beginning and 71.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. * Witness Printer took 54.59 ms. Allocated memory is still 151.0 MB. Free memory was 71.6 MB in the beginning and 69.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int counter = 0; [L22] int a, b; [L23] long long x, y, z; [L25] a = __VERIFIER_nondet_int() [L26] b = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L29] x = a [L30] y = b [L31] z = 0 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L13] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(y != 0)) [L38] COND TRUE y % 2 == 1 [L39] z = z + x [L40] y = y - 1 [L42] x = 2 * x [L43] y = y / 2 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND FALSE !(counter++<1) [L13] COND TRUE !(cond) VAL [counter=2] [L6] __assert_fail("0", "prodbin-ll.c", 6, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 20 SDslu, 51 SDs, 0 SdLazy, 41 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 820 SizeOfPredicates, 12 NumberOfNonLiveVariables, 263 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...