./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_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:26,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:26,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:26,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:26,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:26,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:26,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:26,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:26,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:26,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:26,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:26,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:26,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:26,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:26,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:26,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:26,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:26,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:26,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:26,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:26,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:26,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:26,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:26,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:26,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:26,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:26,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:26,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:26,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:26,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:26,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:26,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:26,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:26,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:26,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:26,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:26,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:26,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:26,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:26,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:26,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:26,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:26,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:26,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:26,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:26,674 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:26,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:26,675 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:26,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:26,675 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:26,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:26,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:26,677 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:26,677 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:26,678 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:26,678 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:26,678 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:26,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:26,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:26,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:26,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:26,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:26,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:26,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:26,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:26,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:26,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:26,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:26,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:26,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:26,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:26,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:26,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:26,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:26,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:26,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:26,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:26,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:26,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:26,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:26,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:26,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:26,687 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_476d255d-5acc-42c1-9af4-1d6d604f45cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-28 07:40:26,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:27,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:27,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:27,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:27,015 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:27,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 07:40:27,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/7d5744aca/de7609a7508f4d8190cff49956cb09e9/FLAGb31d97d68 [2020-11-28 07:40:27,556 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:27,557 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 07:40:27,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/7d5744aca/de7609a7508f4d8190cff49956cb09e9/FLAGb31d97d68 [2020-11-28 07:40:27,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/7d5744aca/de7609a7508f4d8190cff49956cb09e9 [2020-11-28 07:40:27,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:27,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:27,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:27,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:27,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:27,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:27" (1/1) ... [2020-11-28 07:40:27,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176d4af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:27, skipping insertion in model container [2020-11-28 07:40:27,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:27" (1/1) ... [2020-11-28 07:40:27,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:27,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:28,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:28,211 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:28,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:28,268 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:28,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28 WrapperNode [2020-11-28 07:40:28,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:28,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:28,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:28,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:28,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:28,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:28,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:28,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:28,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... [2020-11-28 07:40:28,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:28,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:28,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:28,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:28,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:29,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:29,346 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-28 07:40:29,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:29 BoogieIcfgContainer [2020-11-28 07:40:29,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:29,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:29,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:29,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:29,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:27" (1/3) ... [2020-11-28 07:40:29,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d99667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:29, skipping insertion in model container [2020-11-28 07:40:29,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:28" (2/3) ... [2020-11-28 07:40:29,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d99667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:29, skipping insertion in model container [2020-11-28 07:40:29,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:29" (3/3) ... [2020-11-28 07:40:29,357 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-28 07:40:29,367 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:29,372 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 07:40:29,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 07:40:29,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:29,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:29,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:29,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:29,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:29,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:29,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:29,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-28 07:40:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:29,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:29,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:29,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:29,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1464517207, now seen corresponding path program 1 times [2020-11-28 07:40:29,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:29,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578343708] [2020-11-28 07:40:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:29,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578343708] [2020-11-28 07:40:29,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:29,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:40:29,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333951397] [2020-11-28 07:40:29,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:29,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:29,808 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2020-11-28 07:40:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:30,011 INFO L93 Difference]: Finished difference Result 208 states and 302 transitions. [2020-11-28 07:40:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:40:30,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:40:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:30,024 INFO L225 Difference]: With dead ends: 208 [2020-11-28 07:40:30,024 INFO L226 Difference]: Without dead ends: 137 [2020-11-28 07:40:30,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:40:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-28 07:40:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2020-11-28 07:40:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-28 07:40:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2020-11-28 07:40:30,081 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 10 [2020-11-28 07:40:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2020-11-28 07:40:30,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2020-11-28 07:40:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:30,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:30,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:30,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:30,084 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:30,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:30,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1036588228, now seen corresponding path program 1 times [2020-11-28 07:40:30,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:30,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275097187] [2020-11-28 07:40:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:30,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275097187] [2020-11-28 07:40:30,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:30,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-28 07:40:30,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743531919] [2020-11-28 07:40:30,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:40:30,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:30,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:40:30,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:40:30,347 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand 10 states. [2020-11-28 07:40:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:30,867 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2020-11-28 07:40:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:40:30,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-28 07:40:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:30,870 INFO L225 Difference]: With dead ends: 144 [2020-11-28 07:40:30,870 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 07:40:30,871 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 [2020-11-28 07:40:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 07:40:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-11-28 07:40:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 07:40:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2020-11-28 07:40:30,902 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 13 [2020-11-28 07:40:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:30,903 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2020-11-28 07:40:30,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:40:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2020-11-28 07:40:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:40:30,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:30,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:30,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:30,906 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:30,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1576094046, now seen corresponding path program 1 times [2020-11-28 07:40:30,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:30,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602606785] [2020-11-28 07:40:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:31,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602606785] [2020-11-28 07:40:31,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:31,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:31,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140762767] [2020-11-28 07:40:31,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:31,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:31,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:31,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:31,061 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand 5 states. [2020-11-28 07:40:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:31,162 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2020-11-28 07:40:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:31,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 07:40:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:31,164 INFO L225 Difference]: With dead ends: 144 [2020-11-28 07:40:31,164 INFO L226 Difference]: Without dead ends: 122 [2020-11-28 07:40:31,165 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 [2020-11-28 07:40:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-28 07:40:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2020-11-28 07:40:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 07:40:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-28 07:40:31,175 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 14 [2020-11-28 07:40:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:31,176 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-28 07:40:31,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-28 07:40:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:40:31,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:31,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:31,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:31,179 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1234568257, now seen corresponding path program 1 times [2020-11-28 07:40:31,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:31,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439133320] [2020-11-28 07:40:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:31,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439133320] [2020-11-28 07:40:31,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:31,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:40:31,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775859] [2020-11-28 07:40:31,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:40:31,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:31,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:40:31,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:31,354 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 7 states. [2020-11-28 07:40:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:31,513 INFO L93 Difference]: Finished difference Result 249 states and 307 transitions. [2020-11-28 07:40:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:31,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-28 07:40:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:31,516 INFO L225 Difference]: With dead ends: 249 [2020-11-28 07:40:31,516 INFO L226 Difference]: Without dead ends: 229 [2020-11-28 07:40:31,517 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 [2020-11-28 07:40:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-11-28 07:40:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 92. [2020-11-28 07:40:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 07:40:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2020-11-28 07:40:31,535 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 16 [2020-11-28 07:40:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:31,535 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2020-11-28 07:40:31,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:40:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2020-11-28 07:40:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:40:31,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:31,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:31,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:31,537 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:31,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:31,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1413250939, now seen corresponding path program 1 times [2020-11-28 07:40:31,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:31,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889010384] [2020-11-28 07:40:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:31,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889010384] [2020-11-28 07:40:31,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:31,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:40:31,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232745397] [2020-11-28 07:40:31,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:31,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:31,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:31,703 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand 5 states. [2020-11-28 07:40:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:31,781 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-11-28 07:40:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:31,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 07:40:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:31,785 INFO L225 Difference]: With dead ends: 128 [2020-11-28 07:40:31,785 INFO L226 Difference]: Without dead ends: 108 [2020-11-28 07:40:31,786 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 [2020-11-28 07:40:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-28 07:40:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-11-28 07:40:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-28 07:40:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2020-11-28 07:40:31,795 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 16 [2020-11-28 07:40:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:31,795 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2020-11-28 07:40:31,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2020-11-28 07:40:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:40:31,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:31,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:31,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:40:31,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash 952977255, now seen corresponding path program 1 times [2020-11-28 07:40:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:31,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17121010] [2020-11-28 07:40:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:32,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17121010] [2020-11-28 07:40:32,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:32,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 07:40:32,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619104361] [2020-11-28 07:40:32,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:40:32,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:32,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:40:32,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:40:32,206 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand 9 states. [2020-11-28 07:40:32,737 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-11-28 07:40:33,045 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-11-28 07:40:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:33,154 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-11-28 07:40:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:40:33,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-28 07:40:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:33,159 INFO L225 Difference]: With dead ends: 100 [2020-11-28 07:40:33,159 INFO L226 Difference]: Without dead ends: 82 [2020-11-28 07:40:33,160 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 [2020-11-28 07:40:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-28 07:40:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-11-28 07:40:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 07:40:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-11-28 07:40:33,167 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 17 [2020-11-28 07:40:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:33,168 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-11-28 07:40:33,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:40:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-11-28 07:40:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:40:33,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:33,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:33,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:40:33,169 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]=== [2020-11-28 07:40:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:33,170 INFO L82 PathProgramCache]: Analyzing trace with hash -383037141, now seen corresponding path program 1 times [2020-11-28 07:40:33,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:33,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45686144] [2020-11-28 07:40:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:33,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45686144] [2020-11-28 07:40:33,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:33,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 07:40:33,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957287753] [2020-11-28 07:40:33,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:40:33,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:40:33,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:40:33,463 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 9 states. [2020-11-28 07:40:34,316 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-11-28 07:40:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:35,111 INFO L93 Difference]: Finished difference Result 287 states and 342 transitions. [2020-11-28 07:40:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-28 07:40:35,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-28 07:40:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:35,115 INFO L225 Difference]: With dead ends: 287 [2020-11-28 07:40:35,115 INFO L226 Difference]: Without dead ends: 275 [2020-11-28 07:40:35,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-11-28 07:40:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-28 07:40:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 95. [2020-11-28 07:40:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-28 07:40:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 128 transitions. [2020-11-28 07:40:35,135 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 128 transitions. Word has length 17 [2020-11-28 07:40:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:35,135 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 128 transitions. [2020-11-28 07:40:35,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:40:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 128 transitions. [2020-11-28 07:40:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:40:35,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:35,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:35,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:40:35,142 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]=== [2020-11-28 07:40:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash -861053593, now seen corresponding path program 1 times [2020-11-28 07:40:35,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:35,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221217253] [2020-11-28 07:40:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:35,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221217253] [2020-11-28 07:40:35,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:35,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 07:40:35,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231058527] [2020-11-28 07:40:35,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:35,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:35,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:35,399 INFO L87 Difference]: Start difference. First operand 95 states and 128 transitions. Second operand 8 states. [2020-11-28 07:40:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:35,790 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2020-11-28 07:40:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 07:40:35,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-28 07:40:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:35,795 INFO L225 Difference]: With dead ends: 109 [2020-11-28 07:40:35,795 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 07:40:35,796 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 [2020-11-28 07:40:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 07:40:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-11-28 07:40:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-28 07:40:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2020-11-28 07:40:35,804 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 17 [2020-11-28 07:40:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:35,804 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2020-11-28 07:40:35,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2020-11-28 07:40:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:40:35,805 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:35,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:35,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:40:35,805 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]=== [2020-11-28 07:40:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:35,806 INFO L82 PathProgramCache]: Analyzing trace with hash 361341263, now seen corresponding path program 1 times [2020-11-28 07:40:35,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:35,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851379377] [2020-11-28 07:40:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:35,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:35,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:35,868 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:40:35,868 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:35,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:40:35,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:35 BoogieIcfgContainer [2020-11-28 07:40:35,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:35,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:35,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:35,901 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:35,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:29" (3/4) ... [2020-11-28 07:40:35,904 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:40:35,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:35,906 INFO L168 Benchmark]: Toolchain (without parser) took 8000.41 ms. Allocated memory was 98.6 MB in the beginning and 157.3 MB in the end (delta: 58.7 MB). Free memory was 59.9 MB in the beginning and 72.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:35,907 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 76.7 MB in the beginning and 76.6 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:35,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.47 ms. Allocated memory is still 98.6 MB. Free memory was 59.7 MB in the beginning and 72.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:35,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.61 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 70.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:35,908 INFO L168 Benchmark]: Boogie Preprocessor took 48.27 ms. Allocated memory is still 98.6 MB. Free memory was 69.7 MB in the beginning and 68.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:35,909 INFO L168 Benchmark]: RCFGBuilder took 981.96 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 68.1 MB in the beginning and 98.7 MB in the end (delta: -30.6 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:35,910 INFO L168 Benchmark]: TraceAbstraction took 6550.23 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 98.7 MB in the beginning and 72.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:35,910 INFO L168 Benchmark]: Witness Printer took 3.84 ms. Allocated memory is still 157.3 MB. Free memory is still 72.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:35,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 76.7 MB in the beginning and 76.6 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.47 ms. Allocated memory is still 98.6 MB. Free memory was 59.7 MB in the beginning and 72.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.61 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 70.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.27 ms. Allocated memory is still 98.6 MB. Free memory was 69.7 MB in the beginning and 68.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 981.96 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 68.1 MB in the beginning and 98.7 MB in the end (delta: -30.6 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6550.23 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 98.7 MB in the beginning and 72.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.84 ms. Allocated memory is still 157.3 MB. Free memory is still 72.5 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: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.1s, 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, 3.1s 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, 0.4s SatisfiabilityAnalysisTime, 1.4s 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 [2020-11-28 07:40:38,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:38,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:38,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:38,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:38,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:38,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:38,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:38,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:38,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:38,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:38,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:38,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:38,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:38,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:38,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:38,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:38,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:38,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:38,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:38,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:38,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:38,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:38,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:38,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:38,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:38,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:38,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:38,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:38,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:38,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:38,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:38,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:38,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:38,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:38,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:38,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:38,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:38,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:38,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:38,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:38,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:40:38,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:38,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:38,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:38,593 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:38,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:38,594 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:38,594 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:38,594 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:38,595 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:38,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:38,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:38,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:38,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:38,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:38,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:38,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:38,597 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:38,597 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:40:38,598 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:40:38,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:38,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:38,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:38,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:38,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:38,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:40:38,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:38,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:38,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:38,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:38,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:38,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:38,601 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:40:38,601 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:40:38,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:38,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:38,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:38,602 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_476d255d-5acc-42c1-9af4-1d6d604f45cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-28 07:40:38,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:38,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:38,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:38,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:38,976 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:38,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 07:40:39,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/60ef82cd0/ac9efce2222c4128aa26b9f1611d04f0/FLAG70c36c597 [2020-11-28 07:40:39,702 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:39,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-28 07:40:39,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/60ef82cd0/ac9efce2222c4128aa26b9f1611d04f0/FLAG70c36c597 [2020-11-28 07:40:40,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/data/60ef82cd0/ac9efce2222c4128aa26b9f1611d04f0 [2020-11-28 07:40:40,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:40,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:40,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:40,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:40,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:40,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4517f36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40, skipping insertion in model container [2020-11-28 07:40:40,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:40,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:40,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:40,347 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:40,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:40,433 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:40,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40 WrapperNode [2020-11-28 07:40:40,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:40,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:40,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:40,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:40,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:40,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:40,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:40,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:40,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... [2020-11-28 07:40:40,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:40,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:40,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:40,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:40,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:40:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:41,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:41,392 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-28 07:40:41,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:41 BoogieIcfgContainer [2020-11-28 07:40:41,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:41,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:41,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:41,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:41,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:40" (1/3) ... [2020-11-28 07:40:41,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba35e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:41, skipping insertion in model container [2020-11-28 07:40:41,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:40" (2/3) ... [2020-11-28 07:40:41,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba35e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:41, skipping insertion in model container [2020-11-28 07:40:41,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:41" (3/3) ... [2020-11-28 07:40:41,407 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-28 07:40:41,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:41,422 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 07:40:41,434 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 07:40:41,468 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:41,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:41,468 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:41,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:41,468 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:41,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:41,469 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:41,469 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-28 07:40:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:40:41,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:41,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:41,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-28 07:40:41,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:41,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728220628] [2020-11-28 07:40:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:41,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:40:41,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:41,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728220628] [2020-11-28 07:40:41,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:41,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:40:41,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036837596] [2020-11-28 07:40:41,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:41,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:41,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:41,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:41,782 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-11-28 07:40:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:41,974 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-11-28 07:40:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:41,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 07:40:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:41,994 INFO L225 Difference]: With dead ends: 238 [2020-11-28 07:40:41,995 INFO L226 Difference]: Without dead ends: 139 [2020-11-28 07:40:41,999 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 [2020-11-28 07:40:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-28 07:40:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-11-28 07:40:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 07:40:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-28 07:40:42,066 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-11-28 07:40:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:42,067 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-28 07:40:42,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-28 07:40:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:40:42,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:42,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:42,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:40:42,285 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-11-28 07:40:42,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:42,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466410700] [2020-11-28 07:40:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:42,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:40:42,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:42,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:42,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466410700] [2020-11-28 07:40:42,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:42,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-28 07:40:42,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844522424] [2020-11-28 07:40:42,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:42,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:42,458 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-11-28 07:40:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:42,773 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-11-28 07:40:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 07:40:42,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-28 07:40:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:42,776 INFO L225 Difference]: With dead ends: 226 [2020-11-28 07:40:42,776 INFO L226 Difference]: Without dead ends: 200 [2020-11-28 07:40:42,777 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 [2020-11-28 07:40:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-28 07:40:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-11-28 07:40:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 07:40:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-28 07:40:42,798 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-11-28 07:40:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:42,799 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-28 07:40:42,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-28 07:40:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:40:42,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:42,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:43,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:40:43,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-11-28 07:40:43,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:43,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252239172] [2020-11-28 07:40:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:43,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:40:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:43,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:43,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252239172] [2020-11-28 07:40:43,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:43,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-28 07:40:43,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510500491] [2020-11-28 07:40:43,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:40:43,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:43,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:40:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:43,152 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-28 07:40:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:43,502 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-11-28 07:40:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:40:43,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 07:40:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:43,505 INFO L225 Difference]: With dead ends: 214 [2020-11-28 07:40:43,505 INFO L226 Difference]: Without dead ends: 185 [2020-11-28 07:40:43,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:40:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-28 07:40:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-28 07:40:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-28 07:40:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-28 07:40:43,518 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-28 07:40:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:43,519 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-28 07:40:43,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:40:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-28 07:40:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:40:43,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:43,520 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] [2020-11-28 07:40:43,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:40:43,736 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-28 07:40:43,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:43,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122336304] [2020-11-28 07:40:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:40:43,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122336304] [2020-11-28 07:40:44,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:44,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-28 07:40:44,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301890479] [2020-11-28 07:40:44,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:40:44,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:44,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:40:44,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:40:44,069 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-11-28 07:40:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,472 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-11-28 07:40:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:40:44,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-28 07:40:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,476 INFO L225 Difference]: With dead ends: 183 [2020-11-28 07:40:44,476 INFO L226 Difference]: Without dead ends: 179 [2020-11-28 07:40:44,477 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 [2020-11-28 07:40:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-28 07:40:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-11-28 07:40:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-28 07:40:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-11-28 07:40:44,491 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-11-28 07:40:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,491 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-11-28 07:40:44,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:40:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-11-28 07:40:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:40:44,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,493 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] [2020-11-28 07:40:44,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:40:44,705 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,706 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-28 07:40:44,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:44,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306809679] [2020-11-28 07:40:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:40:44,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306809679] [2020-11-28 07:40:44,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:44,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-28 07:40:44,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939818146] [2020-11-28 07:40:44,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:40:44,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:44,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:40:44,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:44,929 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-11-28 07:40:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:45,153 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-11-28 07:40:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:40:45,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 07:40:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:45,155 INFO L225 Difference]: With dead ends: 182 [2020-11-28 07:40:45,155 INFO L226 Difference]: Without dead ends: 149 [2020-11-28 07:40:45,155 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 [2020-11-28 07:40:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-28 07:40:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-11-28 07:40:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 07:40:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-11-28 07:40:45,174 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-11-28 07:40:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:45,175 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-11-28 07:40:45,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:40:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-11-28 07:40:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:40:45,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:45,176 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] [2020-11-28 07:40:45,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:40:45,394 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-28 07:40:45,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:45,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786433759] [2020-11-28 07:40:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:45,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:40:45,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:45,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:45,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786433759] [2020-11-28 07:40:45,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:45,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-28 07:40:45,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121367239] [2020-11-28 07:40:45,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:45,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:45,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:45,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:45,566 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-11-28 07:40:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:46,435 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-11-28 07:40:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-28 07:40:46,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-28 07:40:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:46,438 INFO L225 Difference]: With dead ends: 369 [2020-11-28 07:40:46,438 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:40:46,440 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 [2020-11-28 07:40:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:40:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-11-28 07:40:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-28 07:40:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-11-28 07:40:46,470 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-11-28 07:40:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-11-28 07:40:46,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-11-28 07:40:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:40:46,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:46,473 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] [2020-11-28 07:40:46,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:40:46,686 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]=== [2020-11-28 07:40:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:46,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-11-28 07:40:46,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:46,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701210754] [2020-11-28 07:40:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:46,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:40:46,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:46,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:46,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701210754] [2020-11-28 07:40:46,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:46,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-28 07:40:46,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762746773] [2020-11-28 07:40:46,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:40:46,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:46,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:40:46,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:40:46,855 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-11-28 07:40:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:47,313 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-11-28 07:40:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 07:40:47,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-28 07:40:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:47,315 INFO L225 Difference]: With dead ends: 179 [2020-11-28 07:40:47,315 INFO L226 Difference]: Without dead ends: 174 [2020-11-28 07:40:47,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-11-28 07:40:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-28 07:40:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-11-28 07:40:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-28 07:40:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-11-28 07:40:47,332 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-11-28 07:40:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:47,334 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-11-28 07:40:47,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:40:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-11-28 07:40:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:40:47,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:47,339 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] [2020-11-28 07:40:47,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:40:47,547 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]=== [2020-11-28 07:40:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-11-28 07:40:47,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:47,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276236914] [2020-11-28 07:40:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:47,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:40:47,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:47,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:47,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276236914] [2020-11-28 07:40:47,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:47,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-28 07:40:47,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354339063] [2020-11-28 07:40:47,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:47,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:47,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:47,677 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-11-28 07:40:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:47,860 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-11-28 07:40:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:40:47,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-28 07:40:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:47,862 INFO L225 Difference]: With dead ends: 159 [2020-11-28 07:40:47,862 INFO L226 Difference]: Without dead ends: 140 [2020-11-28 07:40:47,863 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 [2020-11-28 07:40:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-28 07:40:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-11-28 07:40:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 07:40:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-11-28 07:40:47,878 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-11-28 07:40:47,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:47,879 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-11-28 07:40:47,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-11-28 07:40:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:40:47,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:47,883 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] [2020-11-28 07:40:48,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:40:48,102 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]=== [2020-11-28 07:40:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:48,102 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-11-28 07:40:48,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:48,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834475474] [2020-11-28 07:40:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/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 [2020-11-28 07:40:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:48,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:48,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:48,270 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:40:48,270 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:48,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 07:40:48,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:48 BoogieIcfgContainer [2020-11-28 07:40:48,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:48,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:48,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:48,533 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:48,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:41" (3/4) ... [2020-11-28 07:40:48,536 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:40:48,625 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_476d255d-5acc-42c1-9af4-1d6d604f45cc/bin/utaipan/witness.graphml [2020-11-28 07:40:48,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:48,628 INFO L168 Benchmark]: Toolchain (without parser) took 8583.54 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 47.0 MB in the beginning and 44.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,628 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory is still 35.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:48,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.26 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 52.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.45 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 49.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,630 INFO L168 Benchmark]: Boogie Preprocessor took 41.97 ms. Allocated memory is still 69.2 MB. Free memory was 49.7 MB in the beginning and 47.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,630 INFO L168 Benchmark]: RCFGBuilder took 850.98 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 35.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,631 INFO L168 Benchmark]: TraceAbstraction took 7132.44 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 35.0 MB in the beginning and 47.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,632 INFO L168 Benchmark]: Witness Printer took 92.96 ms. Allocated memory is still 109.1 MB. Free memory was 47.6 MB in the beginning and 44.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:48,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory is still 35.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.26 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 52.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.45 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 49.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.97 ms. Allocated memory is still 69.2 MB. Free memory was 49.7 MB in the beginning and 47.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 850.98 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 35.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7132.44 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 35.0 MB in the beginning and 47.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * Witness Printer took 92.96 ms. Allocated memory is still 109.1 MB. Free memory was 47.6 MB in the beginning and 44.4 MB in the end (delta: 3.1 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, 0.2s 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...