./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.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_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/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 341305be8cf30067c8ef09b4a168f6c17078b23f ................................................................................................................................................................................................................................................................................................... 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_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/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 341305be8cf30067c8ef09b4a168f6c17078b23f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:24,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:24,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:24,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:24,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:24,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:24,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:24,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:24,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:24,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:24,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:24,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:24,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:24,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:24,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:24,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:24,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:24,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:24,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:24,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:24,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:24,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:24,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:24,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:24,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:24,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:24,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:24,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:24,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:24,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:24,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:24,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:24,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:24,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:24,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:24,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:24,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:24,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:24,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:24,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:24,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:24,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:24,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:24,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:24,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:24,672 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:24,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:24,673 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:24,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:24,674 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:24,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:24,675 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:24,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:24,676 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:24,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:24,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:24,677 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:24,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:24,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:24,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:24,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:24,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:24,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:24,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:24,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:24,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:24,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:24,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:24,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:24,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:24,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:24,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:24,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:24,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:24,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:24,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:24,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:24,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:24,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:24,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:24,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:24,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:24,687 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-11-28 07:37:24,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:25,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:25,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:25,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:25,008 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:25,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-28 07:37:25,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/7a86e8e77/bde258fada424fb3ae928af641570439/FLAGe517672d8 [2020-11-28 07:37:25,501 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:25,502 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-28 07:37:25,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/7a86e8e77/bde258fada424fb3ae928af641570439/FLAGe517672d8 [2020-11-28 07:37:25,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/7a86e8e77/bde258fada424fb3ae928af641570439 [2020-11-28 07:37:25,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:25,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:25,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:25,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:25,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:25,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:25" (1/1) ... [2020-11-28 07:37:25,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64234265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:25, skipping insertion in model container [2020-11-28 07:37:25,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:25" (1/1) ... [2020-11-28 07:37:25,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:25,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:26,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:26,174 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:26,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:26,238 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:26,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26 WrapperNode [2020-11-28 07:37:26,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:26,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:26,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:26,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:26,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:26,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:26,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:26,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:26,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... [2020-11-28 07:37:26,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:26,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:26,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:26,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:26,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:37:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:37:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:37:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:37:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:26,813 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:26,814 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 07:37:26,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:26 BoogieIcfgContainer [2020-11-28 07:37:26,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:26,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:26,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:26,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:26,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:25" (1/3) ... [2020-11-28 07:37:26,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24340962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:26, skipping insertion in model container [2020-11-28 07:37:26,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:26" (2/3) ... [2020-11-28 07:37:26,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24340962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:26, skipping insertion in model container [2020-11-28 07:37:26,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:26" (3/3) ... [2020-11-28 07:37:26,838 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-28 07:37:26,848 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:26,852 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:26,862 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:26,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:26,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:26,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:26,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:26,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:26,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:26,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:26,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 07:37:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:37:26,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:26,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:26,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -7391648, now seen corresponding path program 1 times [2020-11-28 07:37:26,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:26,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796604839] [2020-11-28 07:37:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:27,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796604839] [2020-11-28 07:37:27,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:27,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:27,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755980561] [2020-11-28 07:37:27,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:37:27,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:37:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:27,072 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 07:37:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:27,088 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-11-28 07:37:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:37:27,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:37:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:27,095 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:37:27,096 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:37:27,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:37:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:37:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:37:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-28 07:37:27,130 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-11-28 07:37:27,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:27,130 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-28 07:37:27,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:37:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-28 07:37:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:37:27,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:27,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:27,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:27,131 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash -663326809, now seen corresponding path program 1 times [2020-11-28 07:37:27,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:27,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873104338] [2020-11-28 07:37:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:27,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:27,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:27,351 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:37:27,352 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:27,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:27,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:27 BoogieIcfgContainer [2020-11-28 07:37:27,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:27,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:27,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:27,392 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:27,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:26" (3/4) ... [2020-11-28 07:37:27,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:37:27,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:27,402 INFO L168 Benchmark]: Toolchain (without parser) took 1488.54 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 40.5 MB in the beginning and 50.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,403 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 53.3 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:27,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.55 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 71.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.46 ms. Allocated memory is still 94.4 MB. Free memory was 71.8 MB in the beginning and 70.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,407 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,408 INFO L168 Benchmark]: RCFGBuilder took 475.04 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 50.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,408 INFO L168 Benchmark]: TraceAbstraction took 560.78 ms. Allocated memory is still 94.4 MB. Free memory was 73.6 MB in the beginning and 51.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,411 INFO L168 Benchmark]: Witness Printer took 5.81 ms. Allocated memory is still 94.4 MB. Free memory was 50.9 MB in the beginning and 50.5 MB in the end (delta: 381.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:27,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 53.3 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.55 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 71.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.46 ms. Allocated memory is still 94.4 MB. Free memory was 71.8 MB in the beginning and 70.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 475.04 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 50.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 560.78 ms. Allocated memory is still 94.4 MB. Free memory was 73.6 MB in the beginning and 51.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.81 ms. Allocated memory is still 94.4 MB. Free memory was 50.9 MB in the beginning and 50.5 MB in the end (delta: 381.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L4] __assert_fail("0", "float_req_bl_1071.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:29,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:29,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:29,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:29,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:29,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:29,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:29,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:29,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:29,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:29,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:29,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:29,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:29,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:29,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:29,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:29,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:29,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:30,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:30,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:30,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:30,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:30,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:30,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:30,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:30,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:30,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:30,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:30,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:30,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:30,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:30,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:30,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:30,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:30,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:30,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:30,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:30,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:30,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:30,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:30,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:30,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:37:30,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:30,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:30,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:30,093 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:30,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:30,094 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:30,094 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:30,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:30,094 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:30,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:30,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:30,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:30,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:30,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:30,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:30,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:30,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:30,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:37:30,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:37:30,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:30,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:30,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:30,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:30,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:30,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:37:30,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:30,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:30,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:30,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:30,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:30,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:30,102 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:37:30,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:37:30,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:30,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:30,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:30,103 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_ee306b49-dbff-4e30-8607-8b18c885ed4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-11-28 07:37:30,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:30,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:30,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:30,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:30,570 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:30,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-28 07:37:30,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/d0fb762c7/8f2e7137f7694c4dbe8255de63c257b2/FLAGd1bdd13ce [2020-11-28 07:37:31,212 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:31,213 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-11-28 07:37:31,219 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/d0fb762c7/8f2e7137f7694c4dbe8255de63c257b2/FLAGd1bdd13ce [2020-11-28 07:37:31,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/data/d0fb762c7/8f2e7137f7694c4dbe8255de63c257b2 [2020-11-28 07:37:31,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:31,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:31,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:31,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:31,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:31,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:31,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164063d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31, skipping insertion in model container [2020-11-28 07:37:31,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:31,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:31,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:31,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:31,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:31,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:31,924 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:31,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31 WrapperNode [2020-11-28 07:37:31,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:31,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:31,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:31,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:31,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:31,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:31,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:31,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:31,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:31,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:32,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... [2020-11-28 07:37:32,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:32,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:32,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:32,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:32,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:37:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:37:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:32,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:37:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:32,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:32,742 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 07:37:32,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:32 BoogieIcfgContainer [2020-11-28 07:37:32,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:32,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:32,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:32,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:32,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:31" (1/3) ... [2020-11-28 07:37:32,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a530a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:32, skipping insertion in model container [2020-11-28 07:37:32,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:31" (2/3) ... [2020-11-28 07:37:32,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a530a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:32, skipping insertion in model container [2020-11-28 07:37:32,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:32" (3/3) ... [2020-11-28 07:37:32,752 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-28 07:37:32,764 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:32,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:32,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:32,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:32,816 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:32,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:32,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:32,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:32,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:32,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:32,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-28 07:37:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:37:32,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:32,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:32,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:32,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-11-28 07:37:32,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:37:32,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268986002] [2020-11-28 07:37:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:37:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:32,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:37:32,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:33,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:33,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268986002] [2020-11-28 07:37:33,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:33,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:37:33,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940027197] [2020-11-28 07:37:33,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:37:33,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:37:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:37:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:33,032 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-28 07:37:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:33,049 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-28 07:37:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:37:33,051 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:37:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:33,059 INFO L225 Difference]: With dead ends: 41 [2020-11-28 07:37:33,059 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 07:37:33,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 07:37:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 07:37:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:37:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 07:37:33,105 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-11-28 07:37:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:33,105 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 07:37:33,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:37:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 07:37:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:37:33,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:33,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:33,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:37:33,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-11-28 07:37:33,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:37:33,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262459625] [2020-11-28 07:37:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:37:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:33,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:37:33,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:33,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:33,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262459625] [2020-11-28 07:37:33,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:33,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2020-11-28 07:37:33,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086759875] [2020-11-28 07:37:33,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:33,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:37:33,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:33,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:33,557 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-11-28 07:37:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:33,617 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 07:37:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:33,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:37:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:33,620 INFO L225 Difference]: With dead ends: 29 [2020-11-28 07:37:33,620 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 07:37:33,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 07:37:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-11-28 07:37:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:37:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-28 07:37:33,626 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2020-11-28 07:37:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:33,626 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-28 07:37:33,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-28 07:37:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:37:33,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:33,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:33,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:37:33,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:33,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:33,828 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2020-11-28 07:37:33,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:37:33,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048264791] [2020-11-28 07:37:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:37:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:33,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:37:33,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:34,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:34,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048264791] [2020-11-28 07:37:34,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:34,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:37:34,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900569512] [2020-11-28 07:37:34,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:37:34,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:37:34,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:37:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:37:34,158 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-11-28 07:37:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:34,486 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-28 07:37:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:34,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-28 07:37:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:34,487 INFO L225 Difference]: With dead ends: 24 [2020-11-28 07:37:34,488 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:37:34,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:37:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:37:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 07:37:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:37:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 07:37:34,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-11-28 07:37:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:34,495 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 07:37:34,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:37:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 07:37:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:37:34,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:34,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:34,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:37:34,698 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2020-11-28 07:37:34,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:37:34,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437380488] [2020-11-28 07:37:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:37:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:34,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:37:34,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:34,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:35,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437380488] [2020-11-28 07:37:35,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:35,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 07:37:35,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989204624] [2020-11-28 07:37:35,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:37:35,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:37:35,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:37:35,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:37:35,057 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-11-28 07:37:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:35,165 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 07:37:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:35,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-28 07:37:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:35,166 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:37:35,166 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:35,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:37:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:35,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-28 07:37:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:35,168 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:35,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:37:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:35,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:35,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:37:35,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point L23(lines 23 41) no Hoare annotation was computed. [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-11-28 07:37:35,491 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:37:35,491 INFO L274 CegarLoopResult]: For program point L24(lines 24 37) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:35,492 INFO L274 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2020-11-28 07:37:35,493 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-11-28 07:37:35,493 INFO L270 CegarLoopResult]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-11-28 07:37:35,493 INFO L277 CegarLoopResult]: At program point L63(lines 48 64) the Hoare annotation is: true [2020-11-28 07:37:35,493 INFO L274 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-11-28 07:37:35,493 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-11-28 07:37:35,493 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-28 07:37:35,499 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-28 07:37:35,509 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-28 07:37:35,512 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-28 07:37:35,513 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-28 07:37:35,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:35 BoogieIcfgContainer [2020-11-28 07:37:35,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:35,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:35,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:35,520 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:35,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:32" (3/4) ... [2020-11-28 07:37:35,523 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:35,534 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:37:35,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:37:35,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:37:35,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:35,567 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) [2020-11-28 07:37:35,568 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2020-11-28 07:37:35,602 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ee306b49-dbff-4e30-8607-8b18c885ed4e/bin/utaipan/witness.graphml [2020-11-28 07:37:35,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:35,604 INFO L168 Benchmark]: Toolchain (without parser) took 4015.58 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 40.2 MB in the beginning and 69.1 MB in the end (delta: -29.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:35,604 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:35,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.07 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 44.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:35,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.23 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:35,606 INFO L168 Benchmark]: Boogie Preprocessor took 69.47 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 40.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:35,607 INFO L168 Benchmark]: RCFGBuilder took 677.05 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 40.8 MB in the beginning and 67.6 MB in the end (delta: -26.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:35,609 INFO L168 Benchmark]: TraceAbstraction took 2770.28 ms. Allocated memory is still 88.1 MB. Free memory was 66.9 MB in the beginning and 27.6 MB in the end (delta: 39.4 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:35,609 INFO L168 Benchmark]: Witness Printer took 85.62 ms. Allocated memory is still 88.1 MB. Free memory was 27.6 MB in the beginning and 69.1 MB in the end (delta: -41.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:35,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.07 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 44.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.23 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.47 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 40.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 677.05 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 40.8 MB in the beginning and 67.6 MB in the end (delta: -26.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2770.28 ms. Allocated memory is still 88.1 MB. Free memory was 66.9 MB in the beginning and 27.6 MB in the end (delta: 39.4 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 85.62 ms. Allocated memory is still 88.1 MB. Free memory was 27.6 MB in the beginning and 69.1 MB in the end (delta: -41.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2020-11-28 07:37:35,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-28 07:37:35,620 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2020-11-28 07:37:35,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-11-28 07:37:35,623 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 48 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3257 SizeOfPredicates, 21 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...