./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-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_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/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 eb7563327d648a3c438694ce52b023a250f6c4ef ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:25,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:25,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:25,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:25,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:25,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:25,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:25,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:25,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:25,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:25,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:25,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:25,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:25,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:25,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:25,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:25,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:25,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:25,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:25,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:25,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:25,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:25,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:25,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:25,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:25,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:25,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:25,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:25,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:25,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:25,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:25,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:25,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:25,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:25,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:25,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:25,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:25,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:25,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:25,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:25,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:25,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:25,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:25,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:25,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:25,183 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:25,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:25,183 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:25,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:25,184 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:25,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:25,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:25,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:25,184 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:25,184 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:25,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:25,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:25,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:25,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:25,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:25,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:25,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:25,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:25,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:25,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:25,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:25,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:25,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:25,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:25,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:25,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:25,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:25,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:25,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:25,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:25,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:25,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:25,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:25,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:25,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:25,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:25,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:25,190 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_a909984c-0d65-4c9d-9a27-2466e6d85961/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb7563327d648a3c438694ce52b023a250f6c4ef [2020-11-28 07:42:25,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:25,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:25,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:25,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:25,456 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:25,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2020-11-28 07:42:25,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/data/812fe3d15/d05c532a5765454188277de0beccfa74/FLAG8973720e6 [2020-11-28 07:42:25,977 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:25,978 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2020-11-28 07:42:25,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/data/812fe3d15/d05c532a5765454188277de0beccfa74/FLAG8973720e6 [2020-11-28 07:42:26,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/data/812fe3d15/d05c532a5765454188277de0beccfa74 [2020-11-28 07:42:26,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:26,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:26,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:26,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:26,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:26,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfd5851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26, skipping insertion in model container [2020-11-28 07:42:26,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:26,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:26,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:26,635 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:26,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:26,670 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:26,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26 WrapperNode [2020-11-28 07:42:26,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:26,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:26,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:26,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:26,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:26,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:26,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:26,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:26,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... [2020-11-28 07:42:26,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:26,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:26,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:26,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:26,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/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 [2020-11-28 07:42:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2020-11-28 07:42:27,311 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:27,311 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-28 07:42:27,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:27 BoogieIcfgContainer [2020-11-28 07:42:27,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:27,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:27,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:27,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:27,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:26" (1/3) ... [2020-11-28 07:42:27,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:27, skipping insertion in model container [2020-11-28 07:42:27,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:26" (2/3) ... [2020-11-28 07:42:27,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:27, skipping insertion in model container [2020-11-28 07:42:27,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:27" (3/3) ... [2020-11-28 07:42:27,328 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound1.c [2020-11-28 07:42:27,346 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:27,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 07:42:27,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 07:42:27,388 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:27,388 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:27,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:27,389 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:27,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:27,389 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:27,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:27,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-28 07:42:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:42:27,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:27,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:42:27,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:27,418 INFO L82 PathProgramCache]: Analyzing trace with hash 162052214, now seen corresponding path program 1 times [2020-11-28 07:42:27,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:27,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54376774] [2020-11-28 07:42:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:27,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54376774] [2020-11-28 07:42:27,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:27,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:27,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156349356] [2020-11-28 07:42:27,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:27,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:27,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:27,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:27,640 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-11-28 07:42:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:27,880 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2020-11-28 07:42:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:27,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:42:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:27,891 INFO L225 Difference]: With dead ends: 92 [2020-11-28 07:42:27,891 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 07:42:27,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 07:42:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2020-11-28 07:42:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:42:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-28 07:42:27,935 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-11-28 07:42:27,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:27,935 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-28 07:42:27,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-28 07:42:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:42:27,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:27,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:27,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:27,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:27,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1112866297, now seen corresponding path program 1 times [2020-11-28 07:42:27,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:27,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052469099] [2020-11-28 07:42:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:27,958 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:42:27,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115317501] [2020-11-28 07:42:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/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 [2020-11-28 07:42:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:28,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:42:28,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:28,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:28,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052469099] [2020-11-28 07:42:28,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:28,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115317501] [2020-11-28 07:42:28,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:28,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:42:28,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918552104] [2020-11-28 07:42:28,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:28,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:28,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:28,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:28,133 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-11-28 07:42:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:28,167 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-11-28 07:42:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:28,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:42:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:28,170 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:42:28,170 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 07:42:28,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 07:42:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-28 07:42:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 07:42:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-28 07:42:28,182 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2020-11-28 07:42:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:28,186 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-28 07:42:28,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-28 07:42:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:42:28,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:28,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:28,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:42:28,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1113541561, now seen corresponding path program 1 times [2020-11-28 07:42:28,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:28,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161240325] [2020-11-28 07:42:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:28,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161240325] [2020-11-28 07:42:28,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:28,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:28,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569364708] [2020-11-28 07:42:28,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:28,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:28,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:28,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:28,507 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2020-11-28 07:42:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:28,689 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-28 07:42:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:28,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:42:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:28,691 INFO L225 Difference]: With dead ends: 51 [2020-11-28 07:42:28,692 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 07:42:28,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:28,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 07:42:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-11-28 07:42:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:42:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-28 07:42:28,699 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2020-11-28 07:42:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:28,700 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-28 07:42:28,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-28 07:42:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:42:28,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:28,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:28,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:28,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash 666770364, now seen corresponding path program 1 times [2020-11-28 07:42:28,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:28,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039039847] [2020-11-28 07:42:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:28,743 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:42:28,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681662648] [2020-11-28 07:42:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/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 [2020-11-28 07:42:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:28,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:42:28,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:28,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:28,918 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:28,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039039847] [2020-11-28 07:42:28,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:28,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681662648] [2020-11-28 07:42:28,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:28,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:42:28,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105675934] [2020-11-28 07:42:28,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:42:28,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:28,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:42:28,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:28,936 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-11-28 07:42:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,451 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-11-28 07:42:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:42:31,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:42:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,455 INFO L225 Difference]: With dead ends: 100 [2020-11-28 07:42:31,455 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 07:42:31,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:42:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 07:42:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-11-28 07:42:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 07:42:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-11-28 07:42:31,470 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 9 [2020-11-28 07:42:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,471 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-11-28 07:42:31,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:42:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-11-28 07:42:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:42:31,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:31,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:31,686 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:31,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1435707066, now seen corresponding path program 1 times [2020-11-28 07:42:31,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:31,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974618686] [2020-11-28 07:42:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:31,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:42:31,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488042881] [2020-11-28 07:42:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/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 [2020-11-28 07:42:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:31,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:42:31,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:31,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974618686] [2020-11-28 07:42:31,823 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:31,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488042881] [2020-11-28 07:42:31,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:31,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:42:31,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592386090] [2020-11-28 07:42:31,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:42:31,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:31,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:42:31,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:42:31,826 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 5 states. [2020-11-28 07:42:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:31,861 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-11-28 07:42:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:31,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:42:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:31,863 INFO L225 Difference]: With dead ends: 70 [2020-11-28 07:42:31,863 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 07:42:31,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:42:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 07:42:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-11-28 07:42:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 07:42:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-28 07:42:31,873 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2020-11-28 07:42:31,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:31,873 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-28 07:42:31,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:42:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-28 07:42:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:42:31,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:31,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:32,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:32,089 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:32,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1557270803, now seen corresponding path program 1 times [2020-11-28 07:42:32,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:32,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466940718] [2020-11-28 07:42:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:32,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:42:32,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278850533] [2020-11-28 07:42:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/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 [2020-11-28 07:42:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:32,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:42:32,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:32,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:32,224 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:32,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466940718] [2020-11-28 07:42:32,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:32,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278850533] [2020-11-28 07:42:32,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:32,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-28 07:42:32,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776645520] [2020-11-28 07:42:32,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:32,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:32,233 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 4 states. [2020-11-28 07:42:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:32,235 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-28 07:42:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:32,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 07:42:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:32,236 INFO L225 Difference]: With dead ends: 40 [2020-11-28 07:42:32,236 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:32,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:32,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-28 07:42:32,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:32,238 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:32,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:32,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:32,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:32,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:32,518 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 43) the Hoare annotation is: false [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point L53-2(lines 23 62) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point L45(lines 45 57) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point L45-2(lines 45 57) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,519 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,520 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,520 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,520 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: false [2020-11-28 07:42:32,520 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,520 INFO L270 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: false [2020-11-28 07:42:32,520 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,520 INFO L270 CegarLoopResult]: At program point L15-5(line 39) the Hoare annotation is: false [2020-11-28 07:42:32,520 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,521 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: false [2020-11-28 07:42:32,521 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,521 INFO L270 CegarLoopResult]: At program point L15-9(line 49) the Hoare annotation is: false [2020-11-28 07:42:32,521 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,521 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~B~0 4294967296))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~d~0 .cse0) (<= 1 .cse0) (= ULTIMATE.start_main_~p~0 1))) [2020-11-28 07:42:32,521 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-28 07:42:32,521 INFO L270 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:32,522 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 07:42:32,523 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-11-28 07:42:32,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:32 BoogieIcfgContainer [2020-11-28 07:42:32,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:32,542 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:32,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:32,543 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:32,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:27" (3/4) ... [2020-11-28 07:42:32,547 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:32,557 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-28 07:42:32,557 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:42:32,558 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:42:32,558 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:32,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a909984c-0d65-4c9d-9a27-2466e6d85961/bin/utaipan/witness.graphml [2020-11-28 07:42:32,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:32,612 INFO L168 Benchmark]: Toolchain (without parser) took 6211.99 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 55.6 MB in the end (delta: 31.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:32,613 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:32,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.43 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 95.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:32,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 117.4 MB. Free memory was 95.1 MB in the beginning and 93.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:32,619 INFO L168 Benchmark]: Boogie Preprocessor took 25.59 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:32,619 INFO L168 Benchmark]: RCFGBuilder took 574.61 ms. Allocated memory is still 117.4 MB. Free memory was 92.2 MB in the beginning and 69.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:32,620 INFO L168 Benchmark]: TraceAbstraction took 5226.24 ms. Allocated memory is still 117.4 MB. Free memory was 69.9 MB in the beginning and 59.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:32,620 INFO L168 Benchmark]: Witness Printer took 68.27 ms. Allocated memory is still 117.4 MB. Free memory was 59.6 MB in the beginning and 55.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:32,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.43 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 95.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 117.4 MB. Free memory was 95.1 MB in the beginning and 93.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.59 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 574.61 ms. Allocated memory is still 117.4 MB. Free memory was 92.2 MB in the beginning and 69.9 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5226.24 ms. Allocated memory is still 117.4 MB. Free memory was 69.9 MB in the beginning and 59.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 68.27 ms. Allocated memory is still 117.4 MB. Free memory was 59.6 MB in the beginning and 55.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((!(0 == cond) && d == B % 4294967296) && 1 <= B % 4294967296) && p == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 161 SDslu, 186 SDs, 0 SdLazy, 116 SolverSat, 43 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 6 MinimizatonAttempts, 64 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 28 HoareAnnotationTreeSize, 8 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3784 SizeOfPredicates, 16 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...