./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.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_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 02:02:57,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:02:58,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:02:58,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:02:58,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:02:58,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:02:58,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:02:58,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:02:58,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:02:58,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:02:58,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:02:58,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:02:58,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:02:58,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:02:58,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:02:58,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:02:58,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:02:58,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:02:58,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:02:58,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:02:58,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:02:58,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:02:58,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:02:58,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:02:58,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:02:58,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:02:58,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:02:58,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:02:58,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:02:58,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:02:58,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:02:58,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:02:58,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:02:58,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:02:58,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:02:58,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:02:58,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:02:58,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:02:58,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:02:58,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:02:58,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:02:58,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:02:58,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:02:58,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:02:58,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:02:58,210 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:02:58,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:02:58,210 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:02:58,211 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:02:58,211 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:02:58,211 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:02:58,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:02:58,211 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:02:58,211 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:02:58,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:02:58,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:02:58,212 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:02:58,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:02:58,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:02:58,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:02:58,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:02:58,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:02:58,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:02:58,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:02:58,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:02:58,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:02:58,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:02:58,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:02:58,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:02:58,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:02:58,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:02:58,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:02:58,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:02:58,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:58,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:02:58,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:02:58,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:02:58,216 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:02:58,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:02:58,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:02:58,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:02:58,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:02:58,217 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_18ef62a9-8205-498f-930c-29e4591ff887/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-30 02:02:58,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:02:58,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:02:58,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:02:58,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:02:58,619 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:02:58,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-30 02:02:58,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/e3b70f4ba/671db4a254b2403f8f1f9f8a4a011dd9/FLAGf845278a8 [2020-11-30 02:02:59,262 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:02:59,262 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-30 02:02:59,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/e3b70f4ba/671db4a254b2403f8f1f9f8a4a011dd9/FLAGf845278a8 [2020-11-30 02:02:59,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/e3b70f4ba/671db4a254b2403f8f1f9f8a4a011dd9 [2020-11-30 02:02:59,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:02:59,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:02:59,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:59,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:02:59,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:02:59,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:59" (1/1) ... [2020-11-30 02:02:59,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620b9381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:59, skipping insertion in model container [2020-11-30 02:02:59,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:59" (1/1) ... [2020-11-30 02:02:59,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:02:59,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:00,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:00,044 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:03:00,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:00,119 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:03:00,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00 WrapperNode [2020-11-30 02:03:00,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:00,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:00,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:03:00,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:03:00,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:00,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:03:00,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:03:00,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:03:00,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... [2020-11-30 02:03:00,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:03:00,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:03:00,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:03:00,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:03:00,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/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 [2020-11-30 02:03:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:03:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:03:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:03:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:03:01,311 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:03:01,311 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-30 02:03:01,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:01 BoogieIcfgContainer [2020-11-30 02:03:01,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:03:01,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:03:01,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:03:01,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:03:01,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:02:59" (1/3) ... [2020-11-30 02:03:01,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f0f09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:01, skipping insertion in model container [2020-11-30 02:03:01,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:00" (2/3) ... [2020-11-30 02:03:01,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f0f09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:01, skipping insertion in model container [2020-11-30 02:03:01,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:01" (3/3) ... [2020-11-30 02:03:01,331 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-30 02:03:01,344 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:03:01,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 02:03:01,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 02:03:01,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:03:01,408 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:03:01,408 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:03:01,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:03:01,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:03:01,409 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:03:01,409 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:03:01,410 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:03:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-30 02:03:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:03:01,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:01,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:01,444 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]=== [2020-11-30 02:03:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:01,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1464517207, now seen corresponding path program 1 times [2020-11-30 02:03:01,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:01,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763086348] [2020-11-30 02:03:01,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:01,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763086348] [2020-11-30 02:03:01,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:01,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:01,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005806501] [2020-11-30 02:03:01,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:01,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:01,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:01,834 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2020-11-30 02:03:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:02,080 INFO L93 Difference]: Finished difference Result 208 states and 302 transitions. [2020-11-30 02:03:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:03:02,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 02:03:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:02,102 INFO L225 Difference]: With dead ends: 208 [2020-11-30 02:03:02,102 INFO L226 Difference]: Without dead ends: 137 [2020-11-30 02:03:02,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-30 02:03:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2020-11-30 02:03:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 02:03:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2020-11-30 02:03:02,190 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 10 [2020-11-30 02:03:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:02,191 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2020-11-30 02:03:02,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2020-11-30 02:03:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:03:02,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:02,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:02,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:03:02,193 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]=== [2020-11-30 02:03:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1036588228, now seen corresponding path program 1 times [2020-11-30 02:03:02,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:02,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70372120] [2020-11-30 02:03:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:02,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70372120] [2020-11-30 02:03:02,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:02,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-30 02:03:02,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917540797] [2020-11-30 02:03:02,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:03:02,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:03:02,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:03:02,499 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand 10 states. [2020-11-30 02:03:02,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:02,995 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2020-11-30 02:03:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 02:03:02,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-30 02:03:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:02,998 INFO L225 Difference]: With dead ends: 144 [2020-11-30 02:03:02,998 INFO L226 Difference]: Without dead ends: 136 [2020-11-30 02:03:02,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:03:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-30 02:03:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-11-30 02:03:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-30 02:03:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2020-11-30 02:03:03,010 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 13 [2020-11-30 02:03:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,011 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2020-11-30 02:03:03,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:03:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2020-11-30 02:03:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:03:03,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:03:03,013 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]=== [2020-11-30 02:03:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1576094046, now seen corresponding path program 1 times [2020-11-30 02:03:03,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029950389] [2020-11-30 02:03:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029950389] [2020-11-30 02:03:03,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:03,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:03:03,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077322623] [2020-11-30 02:03:03,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:03,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:03,168 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand 5 states. [2020-11-30 02:03:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:03,274 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2020-11-30 02:03:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:03:03,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 02:03:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:03,277 INFO L225 Difference]: With dead ends: 144 [2020-11-30 02:03:03,277 INFO L226 Difference]: Without dead ends: 122 [2020-11-30 02:03:03,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:03:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-30 02:03:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2020-11-30 02:03:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-30 02:03:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-30 02:03:03,288 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 14 [2020-11-30 02:03:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,288 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-30 02:03:03,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:03,290 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-30 02:03:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:03:03,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:03:03,293 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]=== [2020-11-30 02:03:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1234568257, now seen corresponding path program 1 times [2020-11-30 02:03:03,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236104488] [2020-11-30 02:03:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236104488] [2020-11-30 02:03:03,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:03,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 02:03:03,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389098867] [2020-11-30 02:03:03,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:03:03,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:03,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:03:03,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:03:03,489 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 7 states. [2020-11-30 02:03:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:03,681 INFO L93 Difference]: Finished difference Result 249 states and 307 transitions. [2020-11-30 02:03:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:03:03,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-30 02:03:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:03,684 INFO L225 Difference]: With dead ends: 249 [2020-11-30 02:03:03,685 INFO L226 Difference]: Without dead ends: 229 [2020-11-30 02:03:03,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:03,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-11-30 02:03:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 92. [2020-11-30 02:03:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 02:03:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2020-11-30 02:03:03,708 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 16 [2020-11-30 02:03:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,708 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2020-11-30 02:03:03,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:03:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2020-11-30 02:03:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:03:03,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:03:03,715 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]=== [2020-11-30 02:03:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1413250939, now seen corresponding path program 1 times [2020-11-30 02:03:03,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445837981] [2020-11-30 02:03:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445837981] [2020-11-30 02:03:03,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:03,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:03:03,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691653447] [2020-11-30 02:03:03,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:03,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:03,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:03,867 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand 5 states. [2020-11-30 02:03:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:03,953 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-11-30 02:03:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:03:03,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 02:03:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:03,956 INFO L225 Difference]: With dead ends: 128 [2020-11-30 02:03:03,957 INFO L226 Difference]: Without dead ends: 108 [2020-11-30 02:03:03,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-30 02:03:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-11-30 02:03:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 02:03:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2020-11-30 02:03:03,970 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 16 [2020-11-30 02:03:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,971 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2020-11-30 02:03:03,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2020-11-30 02:03:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:03:03,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:03:03,973 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]=== [2020-11-30 02:03:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash 952977255, now seen corresponding path program 1 times [2020-11-30 02:03:03,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055471981] [2020-11-30 02:03:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:04,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055471981] [2020-11-30 02:03:04,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:04,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 02:03:04,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135639950] [2020-11-30 02:03:04,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:03:04,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:03:04,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:04,401 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand 9 states. [2020-11-30 02:03:04,917 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-11-30 02:03:05,218 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-11-30 02:03:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:05,324 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-11-30 02:03:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:03:05,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-30 02:03:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:05,329 INFO L225 Difference]: With dead ends: 100 [2020-11-30 02:03:05,329 INFO L226 Difference]: Without dead ends: 82 [2020-11-30 02:03:05,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:03:05,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-30 02:03:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-11-30 02:03:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:03:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-11-30 02:03:05,339 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 17 [2020-11-30 02:03:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:05,343 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-11-30 02:03:05,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:03:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-11-30 02:03:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:03:05,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:05,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:05,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:03:05,345 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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]=== [2020-11-30 02:03:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:05,345 INFO L82 PathProgramCache]: Analyzing trace with hash -383037141, now seen corresponding path program 1 times [2020-11-30 02:03:05,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:05,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157565325] [2020-11-30 02:03:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:05,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157565325] [2020-11-30 02:03:05,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:05,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 02:03:05,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861242571] [2020-11-30 02:03:05,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:03:05,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:05,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:03:05,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:05,644 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 9 states. [2020-11-30 02:03:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:07,497 INFO L93 Difference]: Finished difference Result 287 states and 342 transitions. [2020-11-30 02:03:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-30 02:03:07,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-30 02:03:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:07,501 INFO L225 Difference]: With dead ends: 287 [2020-11-30 02:03:07,501 INFO L226 Difference]: Without dead ends: 275 [2020-11-30 02:03:07,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-11-30 02:03:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-30 02:03:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 95. [2020-11-30 02:03:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-30 02:03:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 128 transitions. [2020-11-30 02:03:07,518 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 128 transitions. Word has length 17 [2020-11-30 02:03:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:07,519 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 128 transitions. [2020-11-30 02:03:07,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:03:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 128 transitions. [2020-11-30 02:03:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:03:07,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:07,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:07,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:03:07,521 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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]=== [2020-11-30 02:03:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash -861053593, now seen corresponding path program 1 times [2020-11-30 02:03:07,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:07,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009213451] [2020-11-30 02:03:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:07,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009213451] [2020-11-30 02:03:07,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:07,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 02:03:07,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663179839] [2020-11-30 02:03:07,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:03:07,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:07,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:03:07,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:03:07,869 INFO L87 Difference]: Start difference. First operand 95 states and 128 transitions. Second operand 8 states. [2020-11-30 02:03:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:08,242 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2020-11-30 02:03:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:03:08,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-30 02:03:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:08,243 INFO L225 Difference]: With dead ends: 109 [2020-11-30 02:03:08,243 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 02:03:08,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:03:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 02:03:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-11-30 02:03:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-30 02:03:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2020-11-30 02:03:08,251 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 17 [2020-11-30 02:03:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:08,251 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2020-11-30 02:03:08,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:03:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2020-11-30 02:03:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:03:08,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:08,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:08,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:03:08,253 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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]=== [2020-11-30 02:03:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash 361341263, now seen corresponding path program 1 times [2020-11-30 02:03:08,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:08,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093887932] [2020-11-30 02:03:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:03:08,279 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:03:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:03:08,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:03:08,321 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:03:08,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:03:08,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:03:08,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:08 BoogieIcfgContainer [2020-11-30 02:03:08,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:08,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:08,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:08,355 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:08,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:01" (3/4) ... [2020-11-30 02:03:08,358 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:03:08,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:08,360 INFO L168 Benchmark]: Toolchain (without parser) took 8744.06 ms. Allocated memory was 94.4 MB in the beginning and 169.9 MB in the end (delta: 75.5 MB). Free memory was 58.0 MB in the beginning and 64.9 MB in the end (delta: -6.8 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:08,361 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 74.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:08,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.45 ms. Allocated memory is still 94.4 MB. Free memory was 57.8 MB in the beginning and 69.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:08,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.75 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 66.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:08,363 INFO L168 Benchmark]: Boogie Preprocessor took 61.07 ms. Allocated memory is still 94.4 MB. Free memory was 66.7 MB in the beginning and 64.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:08,363 INFO L168 Benchmark]: RCFGBuilder took 1081.32 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 64.9 MB in the beginning and 83.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:08,364 INFO L168 Benchmark]: TraceAbstraction took 7034.18 ms. Allocated memory was 115.3 MB in the beginning and 169.9 MB in the end (delta: 54.5 MB). Free memory was 83.1 MB in the beginning and 64.9 MB in the end (delta: 18.2 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:08,365 INFO L168 Benchmark]: Witness Printer took 4.10 ms. Allocated memory is still 169.9 MB. Free memory is still 64.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:08,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 74.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.45 ms. Allocated memory is still 94.4 MB. Free memory was 57.8 MB in the beginning and 69.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.75 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 66.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.07 ms. Allocated memory is still 94.4 MB. Free memory was 66.7 MB in the beginning and 64.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1081.32 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 64.9 MB in the beginning and 83.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7034.18 ms. Allocated memory was 115.3 MB in the beginning and 169.9 MB in the end (delta: 54.5 MB). Free memory was 83.1 MB in the beginning and 64.9 MB in the end (delta: 18.2 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.10 ms. Allocated memory is still 169.9 MB. Free memory is still 64.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 911 SDslu, 3512 SDs, 0 SdLazy, 736 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 474 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 8683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:03:11,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:03:11,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:03:11,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:03:11,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:03:11,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:03:11,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:03:11,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:03:11,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:03:11,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:03:11,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:03:11,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:03:11,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:03:11,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:03:11,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:03:11,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:03:11,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:03:11,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:03:11,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:03:11,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:03:11,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:03:11,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:03:11,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:03:11,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:03:11,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:03:11,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:03:11,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:03:11,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:03:11,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:03:11,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:03:11,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:03:11,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:03:11,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:03:11,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:03:11,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:03:11,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:03:11,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:03:11,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:03:11,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:03:11,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:03:11,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:03:11,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:03:11,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:03:11,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:03:11,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:03:11,249 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:03:11,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:03:11,249 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:03:11,250 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:03:11,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:03:11,250 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:03:11,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:03:11,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:03:11,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:03:11,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:03:11,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:03:11,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:03:11,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:03:11,255 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:03:11,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:03:11,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:03:11,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:03:11,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:03:11,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:03:11,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:03:11,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:03:11,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:03:11,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:03:11,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:03:11,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:11,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:03:11,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:03:11,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:03:11,259 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:03:11,259 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:03:11,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:03:11,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:03:11,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:03:11,260 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_18ef62a9-8205-498f-930c-29e4591ff887/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-30 02:03:11,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:03:11,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:03:11,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:03:11,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:03:11,724 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:03:11,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-30 02:03:11,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/ca03b5996/6a106b1393484825ab2e230687792cb6/FLAG016cc5d60 [2020-11-30 02:03:12,364 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:03:12,364 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-30 02:03:12,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/ca03b5996/6a106b1393484825ab2e230687792cb6/FLAG016cc5d60 [2020-11-30 02:03:12,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/data/ca03b5996/6a106b1393484825ab2e230687792cb6 [2020-11-30 02:03:12,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:03:12,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:03:12,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:12,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:03:12,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:03:12,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:12" (1/1) ... [2020-11-30 02:03:12,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127c31d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:12, skipping insertion in model container [2020-11-30 02:03:12,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:12" (1/1) ... [2020-11-30 02:03:12,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:03:12,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:12,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:13,010 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:03:13,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:13,109 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:03:13,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13 WrapperNode [2020-11-30 02:03:13,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:13,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:13,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:03:13,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:03:13,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:13,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:03:13,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:03:13,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:03:13,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... [2020-11-30 02:03:13,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:03:13,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:03:13,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:03:13,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:03:13,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/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 [2020-11-30 02:03:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:03:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:03:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:03:13,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:03:14,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:03:14,203 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-30 02:03:14,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:14 BoogieIcfgContainer [2020-11-30 02:03:14,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:03:14,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:03:14,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:03:14,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:03:14,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:03:12" (1/3) ... [2020-11-30 02:03:14,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1374e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:14, skipping insertion in model container [2020-11-30 02:03:14,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:13" (2/3) ... [2020-11-30 02:03:14,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1374e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:14, skipping insertion in model container [2020-11-30 02:03:14,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:14" (3/3) ... [2020-11-30 02:03:14,213 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-30 02:03:14,225 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:03:14,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 02:03:14,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 02:03:14,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:03:14,267 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:03:14,267 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:03:14,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:03:14,268 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:03:14,268 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:03:14,268 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:03:14,268 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:03:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-30 02:03:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:03:14,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:14,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:14,291 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]=== [2020-11-30 02:03:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:14,297 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-30 02:03:14,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:14,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663653720] [2020-11-30 02:03:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:14,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:03:14,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:14,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:14,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663653720] [2020-11-30 02:03:14,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:14,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:03:14,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186971963] [2020-11-30 02:03:14,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:14,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:14,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:14,599 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-11-30 02:03:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:14,820 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-11-30 02:03:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:03:14,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 02:03:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:14,833 INFO L225 Difference]: With dead ends: 238 [2020-11-30 02:03:14,833 INFO L226 Difference]: Without dead ends: 139 [2020-11-30 02:03:14,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:03:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-30 02:03:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-11-30 02:03:14,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-30 02:03:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-30 02:03:14,876 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-11-30 02:03:14,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:14,877 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-30 02:03:14,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:14,877 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-30 02:03:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:03:14,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:14,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:15,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:03:15,082 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]=== [2020-11-30 02:03:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-11-30 02:03:15,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:15,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752078850] [2020-11-30 02:03:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:15,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:03:15,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:15,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:15,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752078850] [2020-11-30 02:03:15,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:15,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-30 02:03:15,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631153411] [2020-11-30 02:03:15,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:15,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:15,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:15,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:15,263 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-11-30 02:03:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:15,550 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-11-30 02:03:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:03:15,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-30 02:03:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:15,554 INFO L225 Difference]: With dead ends: 226 [2020-11-30 02:03:15,554 INFO L226 Difference]: Without dead ends: 200 [2020-11-30 02:03:15,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:03:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-30 02:03:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-11-30 02:03:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-30 02:03:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-30 02:03:15,574 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-11-30 02:03:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:15,574 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-30 02:03:15,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-30 02:03:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:03:15,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:15,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:15,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:03:15,789 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]=== [2020-11-30 02:03:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-11-30 02:03:15,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:15,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032016277] [2020-11-30 02:03:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:15,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:03:15,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:16,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:16,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032016277] [2020-11-30 02:03:16,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:16,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-30 02:03:16,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336129298] [2020-11-30 02:03:16,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:03:16,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:03:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:03:16,104 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-30 02:03:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:16,516 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-11-30 02:03:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 02:03:16,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 02:03:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:16,520 INFO L225 Difference]: With dead ends: 214 [2020-11-30 02:03:16,520 INFO L226 Difference]: Without dead ends: 185 [2020-11-30 02:03:16,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:03:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-30 02:03:16,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-30 02:03:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-30 02:03:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-30 02:03:16,559 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-30 02:03:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:16,560 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-30 02:03:16,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:03:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-30 02:03:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 02:03:16,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:16,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:16,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:03:16,774 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]=== [2020-11-30 02:03:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-30 02:03:16,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:16,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014427274] [2020-11-30 02:03:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:16,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:03:16,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:16,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:17,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014427274] [2020-11-30 02:03:17,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:17,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-30 02:03:17,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055606387] [2020-11-30 02:03:17,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:03:17,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:03:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:17,006 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-11-30 02:03:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:17,401 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-11-30 02:03:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:03:17,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-30 02:03:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:17,404 INFO L225 Difference]: With dead ends: 183 [2020-11-30 02:03:17,404 INFO L226 Difference]: Without dead ends: 179 [2020-11-30 02:03:17,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:03:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-30 02:03:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-11-30 02:03:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-30 02:03:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-11-30 02:03:17,426 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-11-30 02:03:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:17,426 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-11-30 02:03:17,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:03:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-11-30 02:03:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 02:03:17,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:17,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:17,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:03:17,652 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]=== [2020-11-30 02:03:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-30 02:03:17,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:17,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909929089] [2020-11-30 02:03:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:17,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:03:17,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:17,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:17,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909929089] [2020-11-30 02:03:17,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:17,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-30 02:03:17,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235697904] [2020-11-30 02:03:17,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:03:17,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:17,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:03:17,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:03:17,792 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-11-30 02:03:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:18,017 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-11-30 02:03:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:03:18,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-30 02:03:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:18,019 INFO L225 Difference]: With dead ends: 182 [2020-11-30 02:03:18,019 INFO L226 Difference]: Without dead ends: 149 [2020-11-30 02:03:18,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:03:18,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-30 02:03:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-11-30 02:03:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-30 02:03:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-11-30 02:03:18,030 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-11-30 02:03:18,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:18,031 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-11-30 02:03:18,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:03:18,031 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-11-30 02:03:18,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 02:03:18,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:18,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:18,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:03:18,249 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]=== [2020-11-30 02:03:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:18,250 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-30 02:03:18,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:18,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631475550] [2020-11-30 02:03:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:18,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 02:03:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:18,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:18,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631475550] [2020-11-30 02:03:18,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:18,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-30 02:03:18,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783449030] [2020-11-30 02:03:18,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:03:18,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:18,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:03:18,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:03:18,418 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-11-30 02:03:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:19,316 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-11-30 02:03:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-30 02:03:19,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-30 02:03:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:19,319 INFO L225 Difference]: With dead ends: 369 [2020-11-30 02:03:19,319 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:03:19,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-11-30 02:03:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:03:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-11-30 02:03:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-30 02:03:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-11-30 02:03:19,334 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-11-30 02:03:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:19,335 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-11-30 02:03:19,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:03:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-11-30 02:03:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:03:19,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:19,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:19,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:03:19,555 INFO L429 AbstractCegarLoop]: === Iteration 7 === [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]=== [2020-11-30 02:03:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-11-30 02:03:19,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:19,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921787642] [2020-11-30 02:03:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:19,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:03:19,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:19,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:19,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921787642] [2020-11-30 02:03:19,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:19,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-30 02:03:19,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124994884] [2020-11-30 02:03:19,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:03:19,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:19,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:03:19,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:19,739 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-11-30 02:03:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:20,176 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-11-30 02:03:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 02:03:20,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-30 02:03:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:20,178 INFO L225 Difference]: With dead ends: 179 [2020-11-30 02:03:20,178 INFO L226 Difference]: Without dead ends: 174 [2020-11-30 02:03:20,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-11-30 02:03:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-30 02:03:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-11-30 02:03:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-30 02:03:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-11-30 02:03:20,194 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-11-30 02:03:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:20,197 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-11-30 02:03:20,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:03:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-11-30 02:03:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:03:20,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:20,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:20,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:03:20,421 INFO L429 AbstractCegarLoop]: === Iteration 8 === [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]=== [2020-11-30 02:03:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-11-30 02:03:20,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:20,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524002247] [2020-11-30 02:03:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:20,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:03:20,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:20,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:20,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524002247] [2020-11-30 02:03:20,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:20,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-30 02:03:20,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286165620] [2020-11-30 02:03:20,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:20,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:20,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:20,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:20,539 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-11-30 02:03:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:20,687 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-11-30 02:03:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:03:20,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-30 02:03:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:20,689 INFO L225 Difference]: With dead ends: 159 [2020-11-30 02:03:20,689 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 02:03:20,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:03:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 02:03:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-11-30 02:03:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-30 02:03:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-11-30 02:03:20,705 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-11-30 02:03:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:20,705 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-11-30 02:03:20,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-11-30 02:03:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:03:20,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:20,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:20,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:03:20,929 INFO L429 AbstractCegarLoop]: === Iteration 9 === [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]=== [2020-11-30 02:03:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-11-30 02:03:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:20,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803269163] [2020-11-30 02:03:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 02:03:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:03:20,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:03:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:03:21,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:03:21,077 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:03:21,077 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:03:21,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 02:03:21,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:21 BoogieIcfgContainer [2020-11-30 02:03:21,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:21,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:21,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:21,321 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:21,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:14" (3/4) ... [2020-11-30 02:03:21,326 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:03:21,400 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_18ef62a9-8205-498f-930c-29e4591ff887/bin/utaipan/witness.graphml [2020-11-30 02:03:21,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:21,402 INFO L168 Benchmark]: Toolchain (without parser) took 8681.04 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 27.4 MB in the beginning and 36.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,406 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:21,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.70 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 44.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 41.8 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:21,408 INFO L168 Benchmark]: Boogie Preprocessor took 84.83 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 39.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,409 INFO L168 Benchmark]: RCFGBuilder took 932.88 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 41.8 MB in the end (delta: -1.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,410 INFO L168 Benchmark]: TraceAbstraction took 7113.24 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 41.2 MB in the beginning and 39.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,414 INFO L168 Benchmark]: Witness Printer took 79.46 ms. Allocated memory is still 88.1 MB. Free memory was 39.8 MB in the beginning and 36.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.70 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 44.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 41.8 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.83 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 39.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.88 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 41.8 MB in the end (delta: -1.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7113.24 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 41.2 MB in the beginning and 39.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * Witness Printer took 79.46 ms. Allocated memory is still 88.1 MB. Free memory was 39.8 MB in the beginning and 36.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13170 SizeOfPredicates, 45 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 incorrect! Received shutdown request...