./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.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_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:45:49,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:45:49,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:45:49,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:45:49,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:45:49,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:45:49,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:45:49,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:45:49,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:45:49,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:45:49,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:45:49,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:45:49,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:45:49,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:45:49,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:45:49,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:45:49,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:45:49,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:45:49,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:45:49,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:45:49,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:45:49,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:45:49,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:45:49,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:45:49,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:45:49,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:45:49,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:45:49,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:45:49,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:45:49,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:45:49,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:45:49,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:45:49,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:45:49,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:45:49,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:45:49,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:45:49,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:45:49,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:45:49,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:45:49,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:45:49,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:45:49,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:45:49,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:45:49,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:45:49,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:45:49,754 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:45:49,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:45:49,755 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:45:49,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:45:49,755 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:45:49,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:45:49,756 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:45:49,756 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:45:49,756 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:45:49,756 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:45:49,757 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:45:49,757 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:45:49,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:45:49,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:45:49,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:45:49,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:45:49,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:45:49,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:45:49,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:45:49,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:45:49,760 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:45:49,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:45:49,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:45:49,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:45:49,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:45:49,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:45:49,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:45:49,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:45:49,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:45:49,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:45:49,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:45:49,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:45:49,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:45:49,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:45:49,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:45:49,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:45:49,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:45:49,764 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_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-30 01:45:50,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:45:50,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:45:50,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:45:50,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:45:50,067 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:45:50,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:45:50,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/4b8e5357d/9462ad66fe5444c09e8c0c4531171ae6/FLAG2462f21de [2020-11-30 01:45:50,735 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:45:50,736 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:45:50,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/4b8e5357d/9462ad66fe5444c09e8c0c4531171ae6/FLAG2462f21de [2020-11-30 01:45:51,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/4b8e5357d/9462ad66fe5444c09e8c0c4531171ae6 [2020-11-30 01:45:51,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:45:51,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:45:51,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:45:51,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:45:51,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:45:51,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43636f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51, skipping insertion in model container [2020-11-30 01:45:51,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:45:51,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:45:51,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:45:51,475 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:45:51,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:45:51,547 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:45:51,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51 WrapperNode [2020-11-30 01:45:51,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:45:51,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:45:51,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:45:51,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:45:51,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:45:51,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:45:51,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:45:51,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:45:51,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... [2020-11-30 01:45:51,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:45:51,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:45:51,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:45:51,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:45:51,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:45:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:45:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:45:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:45:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:45:53,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:45:53,249 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-30 01:45:53,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:45:53 BoogieIcfgContainer [2020-11-30 01:45:53,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:45:53,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:45:53,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:45:53,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:45:53,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:45:51" (1/3) ... [2020-11-30 01:45:53,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eefc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:45:53, skipping insertion in model container [2020-11-30 01:45:53,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:45:51" (2/3) ... [2020-11-30 01:45:53,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eefc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:45:53, skipping insertion in model container [2020-11-30 01:45:53,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:45:53" (3/3) ... [2020-11-30 01:45:53,260 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-30 01:45:53,289 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:45:53,293 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:45:53,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:45:53,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:45:53,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:45:53,327 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:45:53,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:45:53,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:45:53,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:45:53,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:45:53,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:45:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-30 01:45:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:45:53,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:53,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:53,349 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:53,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:53,354 INFO L82 PathProgramCache]: Analyzing trace with hash 490925571, now seen corresponding path program 1 times [2020-11-30 01:45:53,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:53,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027500462] [2020-11-30 01:45:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:53,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027500462] [2020-11-30 01:45:53,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:53,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:45:53,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716298875] [2020-11-30 01:45:53,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:45:53,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:53,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:45:53,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:45:53,785 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 6 states. [2020-11-30 01:45:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:53,939 INFO L93 Difference]: Finished difference Result 210 states and 311 transitions. [2020-11-30 01:45:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:45:53,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 01:45:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:53,964 INFO L225 Difference]: With dead ends: 210 [2020-11-30 01:45:53,964 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 01:45:53,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:45:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 01:45:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2020-11-30 01:45:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 01:45:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2020-11-30 01:45:54,036 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 10 [2020-11-30 01:45:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:54,037 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2020-11-30 01:45:54,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:45:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2020-11-30 01:45:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:45:54,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:54,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:54,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:45:54,042 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash 922267942, now seen corresponding path program 1 times [2020-11-30 01:45:54,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:54,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350959353] [2020-11-30 01:45:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:54,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350959353] [2020-11-30 01:45:54,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:54,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:45:54,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190884755] [2020-11-30 01:45:54,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:45:54,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:45:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:45:54,244 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand 7 states. [2020-11-30 01:45:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:54,537 INFO L93 Difference]: Finished difference Result 239 states and 298 transitions. [2020-11-30 01:45:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:45:54,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-30 01:45:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:54,540 INFO L225 Difference]: With dead ends: 239 [2020-11-30 01:45:54,540 INFO L226 Difference]: Without dead ends: 225 [2020-11-30 01:45:54,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:45:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-11-30 01:45:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 98. [2020-11-30 01:45:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:45:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2020-11-30 01:45:54,564 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 13 [2020-11-30 01:45:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:54,565 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2020-11-30 01:45:54,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:45:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2020-11-30 01:45:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:45:54,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:54,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:54,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:45:54,567 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:54,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1421610550, now seen corresponding path program 1 times [2020-11-30 01:45:54,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:54,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680015622] [2020-11-30 01:45:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:54,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680015622] [2020-11-30 01:45:54,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:54,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:45:54,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861706871] [2020-11-30 01:45:54,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:45:54,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:54,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:45:54,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:45:54,883 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand 9 states. [2020-11-30 01:45:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:55,158 INFO L93 Difference]: Finished difference Result 176 states and 234 transitions. [2020-11-30 01:45:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:45:55,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-30 01:45:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:55,161 INFO L225 Difference]: With dead ends: 176 [2020-11-30 01:45:55,162 INFO L226 Difference]: Without dead ends: 164 [2020-11-30 01:45:55,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:45:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-30 01:45:55,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-11-30 01:45:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-30 01:45:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 184 transitions. [2020-11-30 01:45:55,185 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 184 transitions. Word has length 14 [2020-11-30 01:45:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:55,186 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 184 transitions. [2020-11-30 01:45:55,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:45:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 184 transitions. [2020-11-30 01:45:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:45:55,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:55,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:55,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:45:55,190 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash 685742776, now seen corresponding path program 1 times [2020-11-30 01:45:55,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:55,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241874777] [2020-11-30 01:45:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:55,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241874777] [2020-11-30 01:45:55,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:55,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:45:55,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120439814] [2020-11-30 01:45:55,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:45:55,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:55,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:45:55,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:45:55,373 INFO L87 Difference]: Start difference. First operand 130 states and 184 transitions. Second operand 5 states. [2020-11-30 01:45:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:55,517 INFO L93 Difference]: Finished difference Result 196 states and 252 transitions. [2020-11-30 01:45:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:45:55,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 01:45:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:55,520 INFO L225 Difference]: With dead ends: 196 [2020-11-30 01:45:55,520 INFO L226 Difference]: Without dead ends: 154 [2020-11-30 01:45:55,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:45:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-30 01:45:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2020-11-30 01:45:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-30 01:45:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 150 transitions. [2020-11-30 01:45:55,536 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 150 transitions. Word has length 14 [2020-11-30 01:45:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:55,537 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 150 transitions. [2020-11-30 01:45:55,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:45:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 150 transitions. [2020-11-30 01:45:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:45:55,538 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:55,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:55,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:45:55,547 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:55,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1997255189, now seen corresponding path program 1 times [2020-11-30 01:45:55,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:55,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054709492] [2020-11-30 01:45:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:55,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054709492] [2020-11-30 01:45:55,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:55,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:45:55,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751248985] [2020-11-30 01:45:55,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:45:55,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:55,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:45:55,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:45:55,772 INFO L87 Difference]: Start difference. First operand 110 states and 150 transitions. Second operand 8 states. [2020-11-30 01:45:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:56,855 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2020-11-30 01:45:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-30 01:45:56,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-30 01:45:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:56,862 INFO L225 Difference]: With dead ends: 285 [2020-11-30 01:45:56,862 INFO L226 Difference]: Without dead ends: 245 [2020-11-30 01:45:56,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-11-30 01:45:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-11-30 01:45:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 129. [2020-11-30 01:45:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-30 01:45:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2020-11-30 01:45:56,882 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 17 [2020-11-30 01:45:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:56,882 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2020-11-30 01:45:56,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:45:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2020-11-30 01:45:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:45:56,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:56,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:56,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:45:56,891 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:56,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1519238737, now seen corresponding path program 1 times [2020-11-30 01:45:56,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:56,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599641863] [2020-11-30 01:45:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599641863] [2020-11-30 01:45:57,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:57,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:45:57,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285059459] [2020-11-30 01:45:57,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:45:57,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:57,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:45:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:45:57,037 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand 6 states. [2020-11-30 01:45:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:57,164 INFO L93 Difference]: Finished difference Result 237 states and 309 transitions. [2020-11-30 01:45:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:45:57,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-30 01:45:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:57,168 INFO L225 Difference]: With dead ends: 237 [2020-11-30 01:45:57,168 INFO L226 Difference]: Without dead ends: 216 [2020-11-30 01:45:57,169 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 [2020-11-30 01:45:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-30 01:45:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 124. [2020-11-30 01:45:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-30 01:45:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 171 transitions. [2020-11-30 01:45:57,184 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 171 transitions. Word has length 17 [2020-11-30 01:45:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:57,185 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 171 transitions. [2020-11-30 01:45:57,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:45:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 171 transitions. [2020-11-30 01:45:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:45:57,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:57,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:57,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:45:57,186 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:57,187 INFO L82 PathProgramCache]: Analyzing trace with hash 178338815, now seen corresponding path program 1 times [2020-11-30 01:45:57,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:57,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945755763] [2020-11-30 01:45:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:45:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:45:57,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945755763] [2020-11-30 01:45:57,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:45:57,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 01:45:57,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719755412] [2020-11-30 01:45:57,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:45:57,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:45:57,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:45:57,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:45:57,929 INFO L87 Difference]: Start difference. First operand 124 states and 171 transitions. Second operand 12 states. [2020-11-30 01:45:58,259 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-30 01:45:58,526 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-30 01:45:58,794 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-30 01:45:59,064 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-11-30 01:45:59,318 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-11-30 01:45:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:45:59,384 INFO L93 Difference]: Finished difference Result 218 states and 287 transitions. [2020-11-30 01:45:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:45:59,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-30 01:45:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:45:59,387 INFO L225 Difference]: With dead ends: 218 [2020-11-30 01:45:59,387 INFO L226 Difference]: Without dead ends: 214 [2020-11-30 01:45:59,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:45:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-30 01:45:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 125. [2020-11-30 01:45:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-30 01:45:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2020-11-30 01:45:59,397 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 18 [2020-11-30 01:45:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:45:59,397 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2020-11-30 01:45:59,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:45:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2020-11-30 01:45:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:45:59,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:45:59,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:45:59,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:45:59,399 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:45:59,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:45:59,400 INFO L82 PathProgramCache]: Analyzing trace with hash -349390935, now seen corresponding path program 1 times [2020-11-30 01:45:59,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:45:59,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031217638] [2020-11-30 01:45:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:45:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:45:59,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:45:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:45:59,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:45:59,515 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:45:59,515 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:45:59,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:45:59,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:45:59 BoogieIcfgContainer [2020-11-30 01:45:59,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:45:59,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:45:59,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:45:59,550 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:45:59,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:45:53" (3/4) ... [2020-11-30 01:45:59,554 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:45:59,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:45:59,555 INFO L168 Benchmark]: Toolchain (without parser) took 8481.39 ms. Allocated memory was 88.1 MB in the beginning and 161.5 MB in the end (delta: 73.4 MB). Free memory was 54.8 MB in the beginning and 120.6 MB in the end (delta: -65.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:45:59,556 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 60.5 MB in the beginning and 60.5 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:45:59,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.37 ms. Allocated memory is still 88.1 MB. Free memory was 54.7 MB in the beginning and 63.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:45:59,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.24 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 60.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:45:59,558 INFO L168 Benchmark]: Boogie Preprocessor took 60.13 ms. Allocated memory is still 88.1 MB. Free memory was 60.7 MB in the beginning and 59.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:45:59,559 INFO L168 Benchmark]: RCFGBuilder took 1570.27 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 58.6 MB in the beginning and 48.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:45:59,559 INFO L168 Benchmark]: TraceAbstraction took 6296.49 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 48.6 MB in the beginning and 121.7 MB in the end (delta: -73.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:45:59,560 INFO L168 Benchmark]: Witness Printer took 4.11 ms. Allocated memory is still 161.5 MB. Free memory was 121.7 MB in the beginning and 120.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:45:59,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 60.5 MB in the beginning and 60.5 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.37 ms. Allocated memory is still 88.1 MB. Free memory was 54.7 MB in the beginning and 63.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.24 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 60.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.13 ms. Allocated memory is still 88.1 MB. Free memory was 60.7 MB in the beginning and 59.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1570.27 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 58.6 MB in the beginning and 48.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6296.49 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 48.6 MB in the beginning and 121.7 MB in the end (delta: -73.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.11 ms. Allocated memory is still 161.5 MB. Free memory was 121.7 MB in the beginning and 120.6 MB in the end (delta: 1.0 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_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] 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); [L244] 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); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [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_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 704 SDtfs, 1348 SDslu, 2760 SDs, 0 SdLazy, 546 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, 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, 7 MinimizatonAttempts, 581 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 11612 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:46:02,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:46:02,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:46:02,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:46:02,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:46:02,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:46:02,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:46:02,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:46:02,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:46:02,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:46:02,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:46:02,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:46:02,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:46:02,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:46:02,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:46:02,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:46:02,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:46:02,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:46:02,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:46:02,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:46:02,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:46:02,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:46:02,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:46:02,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:46:02,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:46:02,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:46:02,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:46:02,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:46:02,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:46:02,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:46:02,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:46:02,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:46:02,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:46:02,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:46:02,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:46:02,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:46:02,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:46:02,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:46:02,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:46:02,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:46:02,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:46:02,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:46:02,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:46:02,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:46:02,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:46:02,190 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:46:02,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:46:02,191 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:46:02,191 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:46:02,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:46:02,191 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:46:02,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:46:02,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:46:02,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:46:02,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:46:02,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:46:02,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:46:02,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:46:02,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:46:02,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:46:02,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:46:02,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:46:02,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:46:02,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:46:02,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:46:02,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:46:02,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:46:02,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:46:02,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:46:02,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:46:02,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:46:02,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:46:02,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:46:02,211 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:46:02,211 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:46:02,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:46:02,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:46:02,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:46:02,212 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_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-30 01:46:02,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:46:02,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:46:02,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:46:02,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:46:02,676 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:46:02,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:46:02,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/1d22fe9dd/3190fbd4ea904effbc66a7d6f4cba565/FLAGc359efd5a [2020-11-30 01:46:03,309 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:46:03,310 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:46:03,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/1d22fe9dd/3190fbd4ea904effbc66a7d6f4cba565/FLAGc359efd5a [2020-11-30 01:46:03,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/data/1d22fe9dd/3190fbd4ea904effbc66a7d6f4cba565 [2020-11-30 01:46:03,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:46:03,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:46:03,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:46:03,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:46:03,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:46:03,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:46:03" (1/1) ... [2020-11-30 01:46:03,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e0644d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:03, skipping insertion in model container [2020-11-30 01:46:03,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:46:03" (1/1) ... [2020-11-30 01:46:03,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:46:03,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:46:03,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:46:03,950 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:46:04,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:46:04,087 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:46:04,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04 WrapperNode [2020-11-30 01:46:04,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:46:04,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:46:04,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:46:04,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:46:04,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:46:04,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:46:04,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:46:04,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:46:04,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... [2020-11-30 01:46:04,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:46:04,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:46:04,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:46:04,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:46:04,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:46:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:46:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:46:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:46:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:46:04,985 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:46:04,986 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-30 01:46:04,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:46:04 BoogieIcfgContainer [2020-11-30 01:46:04,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:46:04,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:46:04,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:46:04,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:46:04,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:46:03" (1/3) ... [2020-11-30 01:46:04,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749d704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:46:04, skipping insertion in model container [2020-11-30 01:46:04,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:46:04" (2/3) ... [2020-11-30 01:46:04,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749d704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:46:04, skipping insertion in model container [2020-11-30 01:46:04,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:46:04" (3/3) ... [2020-11-30 01:46:04,996 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-30 01:46:05,007 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:46:05,012 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:46:05,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:46:05,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:46:05,064 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:46:05,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:46:05,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:46:05,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:46:05,065 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:46:05,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:46:05,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:46:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-11-30 01:46:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:46:05,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:05,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:46:05,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-11-30 01:46:05,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:05,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004165010] [2020-11-30 01:46:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:05,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:46:05,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:05,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:05,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004165010] [2020-11-30 01:46:05,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:05,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:46:05,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006480058] [2020-11-30 01:46:05,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:46:05,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:05,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:46:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:46:05,345 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 5 states. [2020-11-30 01:46:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:05,666 INFO L93 Difference]: Finished difference Result 403 states and 613 transitions. [2020-11-30 01:46:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:46:05,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 01:46:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:05,687 INFO L225 Difference]: With dead ends: 403 [2020-11-30 01:46:05,689 INFO L226 Difference]: Without dead ends: 295 [2020-11-30 01:46:05,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:46:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-30 01:46:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2020-11-30 01:46:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 01:46:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2020-11-30 01:46:05,786 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2020-11-30 01:46:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:05,787 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2020-11-30 01:46:05,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:46:05,788 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2020-11-30 01:46:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:46:05,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:05,790 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] [2020-11-30 01:46:06,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:46:06,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:06,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:06,002 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-11-30 01:46:06,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:06,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605540073] [2020-11-30 01:46:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:06,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:46:06,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:06,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:06,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605540073] [2020-11-30 01:46:06,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:06,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:46:06,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599165487] [2020-11-30 01:46:06,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:46:06,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:06,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:46:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:46:06,191 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand 5 states. [2020-11-30 01:46:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:06,444 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2020-11-30 01:46:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:46:06,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 01:46:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:06,452 INFO L225 Difference]: With dead ends: 394 [2020-11-30 01:46:06,452 INFO L226 Difference]: Without dead ends: 337 [2020-11-30 01:46:06,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:46:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-11-30 01:46:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2020-11-30 01:46:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-30 01:46:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2020-11-30 01:46:06,497 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2020-11-30 01:46:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:06,497 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2020-11-30 01:46:06,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:46:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2020-11-30 01:46:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:46:06,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:06,503 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] [2020-11-30 01:46:06,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:46:06,723 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:06,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-11-30 01:46:06,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:06,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766988900] [2020-11-30 01:46:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:06,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:46:06,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:06,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:06,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766988900] [2020-11-30 01:46:06,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:06,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:46:06,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120657417] [2020-11-30 01:46:06,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:46:06,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:06,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:46:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:46:06,870 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand 5 states. [2020-11-30 01:46:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:07,065 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2020-11-30 01:46:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:46:07,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 01:46:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:07,068 INFO L225 Difference]: With dead ends: 378 [2020-11-30 01:46:07,069 INFO L226 Difference]: Without dead ends: 295 [2020-11-30 01:46:07,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:46:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-30 01:46:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2020-11-30 01:46:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-11-30 01:46:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2020-11-30 01:46:07,106 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2020-11-30 01:46:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:07,107 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2020-11-30 01:46:07,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:46:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2020-11-30 01:46:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:46:07,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:07,114 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] [2020-11-30 01:46:07,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:46:07,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:07,327 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-11-30 01:46:07,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:07,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023329349] [2020-11-30 01:46:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:07,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:46:07,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:07,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:07,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023329349] [2020-11-30 01:46:07,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:07,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-30 01:46:07,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782631713] [2020-11-30 01:46:07,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:46:07,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:07,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:46:07,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:46:07,473 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand 6 states. [2020-11-30 01:46:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:07,693 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2020-11-30 01:46:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:46:07,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 01:46:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:07,696 INFO L225 Difference]: With dead ends: 395 [2020-11-30 01:46:07,696 INFO L226 Difference]: Without dead ends: 318 [2020-11-30 01:46:07,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:46:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-11-30 01:46:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-11-30 01:46:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-30 01:46:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2020-11-30 01:46:07,715 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2020-11-30 01:46:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:07,715 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2020-11-30 01:46:07,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:46:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2020-11-30 01:46:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:46:07,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:07,717 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, 1] [2020-11-30 01:46:07,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:46:07,918 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:07,918 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-11-30 01:46:07,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:07,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246503586] [2020-11-30 01:46:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:08,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:46:08,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:08,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:08,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246503586] [2020-11-30 01:46:08,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:08,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-30 01:46:08,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028116102] [2020-11-30 01:46:08,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:46:08,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:08,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:46:08,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:46:08,072 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand 7 states. [2020-11-30 01:46:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:08,484 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2020-11-30 01:46:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:46:08,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-30 01:46:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:08,487 INFO L225 Difference]: With dead ends: 402 [2020-11-30 01:46:08,488 INFO L226 Difference]: Without dead ends: 354 [2020-11-30 01:46:08,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:46:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-11-30 01:46:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-11-30 01:46:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-30 01:46:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2020-11-30 01:46:08,503 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2020-11-30 01:46:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:08,504 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2020-11-30 01:46:08,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:46:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2020-11-30 01:46:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:46:08,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:08,505 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, 1, 1, 1, 1, 1] [2020-11-30 01:46:08,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:46:08,717 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:08,718 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-11-30 01:46:08,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:08,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080966539] [2020-11-30 01:46:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:08,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:46:08,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:08,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:08,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080966539] [2020-11-30 01:46:08,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:08,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:46:08,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121149367] [2020-11-30 01:46:08,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:46:08,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:46:08,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:46:08,845 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand 6 states. [2020-11-30 01:46:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:08,919 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2020-11-30 01:46:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:46:08,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 01:46:08,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:08,922 INFO L225 Difference]: With dead ends: 456 [2020-11-30 01:46:08,922 INFO L226 Difference]: Without dead ends: 381 [2020-11-30 01:46:08,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:46:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-11-30 01:46:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2020-11-30 01:46:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-11-30 01:46:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2020-11-30 01:46:08,942 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2020-11-30 01:46:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:08,943 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2020-11-30 01:46:08,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:46:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2020-11-30 01:46:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:46:08,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:08,945 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, 1, 1, 1, 1, 1] [2020-11-30 01:46:09,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:46:09,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:09,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-11-30 01:46:09,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:09,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734378940] [2020-11-30 01:46:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:46:09,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:09,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:09,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734378940] [2020-11-30 01:46:09,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:09,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-30 01:46:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020982833] [2020-11-30 01:46:09,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:46:09,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:46:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:46:09,339 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand 8 states. [2020-11-30 01:46:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:10,182 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2020-11-30 01:46:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:46:10,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-30 01:46:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:10,189 INFO L225 Difference]: With dead ends: 912 [2020-11-30 01:46:10,189 INFO L226 Difference]: Without dead ends: 805 [2020-11-30 01:46:10,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:46:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-11-30 01:46:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2020-11-30 01:46:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-11-30 01:46:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2020-11-30 01:46:10,228 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2020-11-30 01:46:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:10,229 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2020-11-30 01:46:10,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:46:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2020-11-30 01:46:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:46:10,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:10,232 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, 1, 1, 1, 1, 1, 1] [2020-11-30 01:46:10,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:46:10,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1434134121, now seen corresponding path program 1 times [2020-11-30 01:46:10,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:10,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658732429] [2020-11-30 01:46:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:10,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:46:10,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:10,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:10,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658732429] [2020-11-30 01:46:10,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:10,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-11-30 01:46:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442732092] [2020-11-30 01:46:10,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:46:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:10,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:46:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:46:10,723 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand 13 states. [2020-11-30 01:46:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:12,092 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2020-11-30 01:46:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-30 01:46:12,094 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-11-30 01:46:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:12,098 INFO L225 Difference]: With dead ends: 746 [2020-11-30 01:46:12,098 INFO L226 Difference]: Without dead ends: 705 [2020-11-30 01:46:12,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-11-30 01:46:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-11-30 01:46:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2020-11-30 01:46:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-30 01:46:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2020-11-30 01:46:12,146 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2020-11-30 01:46:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:12,147 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2020-11-30 01:46:12,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:46:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2020-11-30 01:46:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:46:12,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:12,148 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, 1, 1, 1, 1, 1, 1] [2020-11-30 01:46:12,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:46:12,367 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1376875819, now seen corresponding path program 1 times [2020-11-30 01:46:12,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:12,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34816985] [2020-11-30 01:46:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:12,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:46:12,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:12,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:12,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34816985] [2020-11-30 01:46:12,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:12,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:46:12,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979495440] [2020-11-30 01:46:12,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:46:12,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:12,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:46:12,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:46:12,472 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand 6 states. [2020-11-30 01:46:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:12,623 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2020-11-30 01:46:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:46:12,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-30 01:46:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:12,627 INFO L225 Difference]: With dead ends: 501 [2020-11-30 01:46:12,628 INFO L226 Difference]: Without dead ends: 496 [2020-11-30 01:46:12,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:46:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-11-30 01:46:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2020-11-30 01:46:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-30 01:46:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2020-11-30 01:46:12,658 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2020-11-30 01:46:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:12,660 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2020-11-30 01:46:12,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:46:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2020-11-30 01:46:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:46:12,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:12,662 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:46:12,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 01:46:12,878 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash 6505427, now seen corresponding path program 1 times [2020-11-30 01:46:12,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:12,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644012738] [2020-11-30 01:46:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:46:12,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:46:12,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:46:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:12,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:46:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:46:13,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644012738] [2020-11-30 01:46:13,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:46:13,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:46:13,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231551032] [2020-11-30 01:46:13,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:46:13,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:46:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:46:13,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:46:13,033 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand 6 states. [2020-11-30 01:46:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:46:13,148 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2020-11-30 01:46:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:46:13,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-30 01:46:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:46:13,153 INFO L225 Difference]: With dead ends: 901 [2020-11-30 01:46:13,153 INFO L226 Difference]: Without dead ends: 842 [2020-11-30 01:46:13,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:46:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-11-30 01:46:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2020-11-30 01:46:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-11-30 01:46:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2020-11-30 01:46:13,189 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2020-11-30 01:46:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:46:13,189 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2020-11-30 01:46:13,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:46:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2020-11-30 01:46:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:46:13,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:46:13,191 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:46:13,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 01:46:13,403 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:46:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:46:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1711625809, now seen corresponding path program 1 times [2020-11-30 01:46:13,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:46:13,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316516424] [2020-11-30 01:46:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-30 01:46:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:46:13,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:46:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:46:13,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:46:13,630 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 01:46:13,631 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:46:13,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 01:46:13,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:46:13 BoogieIcfgContainer [2020-11-30 01:46:13,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:46:13,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:46:13,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:46:13,879 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:46:13,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:46:04" (3/4) ... [2020-11-30 01:46:13,881 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:46:13,965 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14eadf4d-0dc9-4598-a18a-0ed2553ef6e2/bin/utaipan/witness.graphml [2020-11-30 01:46:13,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:46:13,967 INFO L168 Benchmark]: Toolchain (without parser) took 10299.57 ms. Allocated memory was 58.7 MB in the beginning and 142.6 MB in the end (delta: 83.9 MB). Free memory was 37.5 MB in the beginning and 122.0 MB in the end (delta: -84.5 MB). Peak memory consumption was 65.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,968 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:46:13,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.59 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 37.1 MB in the beginning and 60.8 MB in the end (delta: -23.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 58.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,970 INFO L168 Benchmark]: Boogie Preprocessor took 42.84 ms. Allocated memory is still 79.7 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,970 INFO L168 Benchmark]: RCFGBuilder took 798.47 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 43.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,971 INFO L168 Benchmark]: TraceAbstraction took 8888.55 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 43.2 MB in the beginning and 34.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,971 INFO L168 Benchmark]: Witness Printer took 87.15 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 33.1 MB in the beginning and 122.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:46:13,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 420.59 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 37.1 MB in the beginning and 60.8 MB in the end (delta: -23.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.29 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 58.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.84 ms. Allocated memory is still 79.7 MB. Free memory was 58.3 MB in the beginning and 56.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 798.47 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 43.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8888.55 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 43.2 MB in the beginning and 34.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * Witness Printer took 87.15 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 33.1 MB in the beginning and 122.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 2.3 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_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] 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); [L244] 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); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [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_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 3934 SDslu, 5661 SDs, 0 SdLazy, 1202 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 465 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 26009 SizeOfPredicates, 41 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...