./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa5701cbf2aecb18d72b6e5744b88307065d31ab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa5701cbf2aecb18d72b6e5744b88307065d31ab ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:31:08,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:31:08,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:31:08,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:31:08,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:31:08,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:31:08,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:31:08,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:31:08,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:31:08,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:31:08,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:31:08,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:31:08,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:31:08,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:31:08,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:31:08,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:31:08,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:31:08,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:31:08,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:31:08,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:31:08,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:31:08,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:31:08,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:31:08,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:31:08,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:31:08,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:31:08,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:31:08,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:31:08,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:31:08,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:31:08,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:31:08,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:31:09,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:31:09,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:31:09,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:31:09,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:31:09,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:31:09,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:31:09,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:31:09,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:31:09,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:31:09,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:31:09,014 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:31:09,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:31:09,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:31:09,015 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:31:09,015 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:31:09,015 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:31:09,015 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:31:09,015 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:31:09,015 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:31:09,016 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:31:09,016 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:31:09,016 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:31:09,016 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:31:09,016 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:31:09,016 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:31:09,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:31:09,017 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:31:09,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:31:09,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:31:09,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:31:09,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:31:09,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:31:09,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:31:09,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:31:09,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:31:09,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:31:09,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:31:09,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:31:09,020 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1f168809-d409-4860-82f1-380f6700b747/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(__VERIFIER_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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-12-07 16:31:09,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:31:09,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:31:09,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:31:09,131 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:31:09,132 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:31:09,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 16:31:09,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/9270e2fbb/f3029dec5ce14f4f9b493a73ab22b4ad/FLAG21f45f96f [2019-12-07 16:31:09,592 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:31:09,592 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 16:31:09,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/9270e2fbb/f3029dec5ce14f4f9b493a73ab22b4ad/FLAG21f45f96f [2019-12-07 16:31:09,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/9270e2fbb/f3029dec5ce14f4f9b493a73ab22b4ad [2019-12-07 16:31:09,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:31:09,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:31:09,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:31:09,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:31:09,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:31:09,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0ddae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09, skipping insertion in model container [2019-12-07 16:31:09,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:31:09,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:31:09,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:31:09,813 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:31:09,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:31:09,846 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:31:09,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09 WrapperNode [2019-12-07 16:31:09,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:31:09,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:31:09,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:31:09,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:31:09,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:31:09,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:31:09,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:31:09,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:31:09,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... [2019-12-07 16:31:09,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:31:09,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:31:09,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:31:09,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:31:09,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/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 [2019-12-07 16:31:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:31:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:31:10,263 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:31:10,263 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-12-07 16:31:10,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:31:10 BoogieIcfgContainer [2019-12-07 16:31:10,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:31:10,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:31:10,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:31:10,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:31:10,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:31:09" (1/3) ... [2019-12-07 16:31:10,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3292eda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:31:10, skipping insertion in model container [2019-12-07 16:31:10,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:09" (2/3) ... [2019-12-07 16:31:10,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3292eda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:31:10, skipping insertion in model container [2019-12-07 16:31:10,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:31:10" (3/3) ... [2019-12-07 16:31:10,269 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-12-07 16:31:10,275 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:31:10,280 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 16:31:10,288 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 16:31:10,303 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:31:10,303 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:31:10,303 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:31:10,303 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:31:10,303 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:31:10,303 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:31:10,303 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:31:10,303 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:31:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2019-12-07 16:31:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:31:10,318 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:10,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:10,319 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash -478280060, now seen corresponding path program 1 times [2019-12-07 16:31:10,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:10,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039186184] [2019-12-07 16:31:10,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:10,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039186184] [2019-12-07 16:31:10,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:10,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 16:31:10,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676314176] [2019-12-07 16:31:10,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 16:31:10,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:31:10,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 16:31:10,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:31:10,546 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 7 states. [2019-12-07 16:31:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:10,712 INFO L93 Difference]: Finished difference Result 206 states and 300 transitions. [2019-12-07 16:31:10,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 16:31:10,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-07 16:31:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:10,721 INFO L225 Difference]: With dead ends: 206 [2019-12-07 16:31:10,722 INFO L226 Difference]: Without dead ends: 128 [2019-12-07 16:31:10,724 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-12-07 16:31:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-12-07 16:31:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 90. [2019-12-07 16:31:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-12-07 16:31:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 122 transitions. [2019-12-07 16:31:10,755 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 122 transitions. Word has length 10 [2019-12-07 16:31:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:10,755 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 122 transitions. [2019-12-07 16:31:10,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 16:31:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 122 transitions. [2019-12-07 16:31:10,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 16:31:10,756 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:10,756 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:10,756 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:10,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1943996300, now seen corresponding path program 1 times [2019-12-07 16:31:10,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:10,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986837877] [2019-12-07 16:31:10,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:10,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986837877] [2019-12-07 16:31:10,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:10,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-12-07 16:31:10,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141587657] [2019-12-07 16:31:10,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 16:31:10,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:31:10,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 16:31:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-12-07 16:31:10,948 INFO L87 Difference]: Start difference. First operand 90 states and 122 transitions. Second operand 11 states. [2019-12-07 16:31:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:11,380 INFO L93 Difference]: Finished difference Result 135 states and 166 transitions. [2019-12-07 16:31:11,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 16:31:11,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-07 16:31:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:11,382 INFO L225 Difference]: With dead ends: 135 [2019-12-07 16:31:11,382 INFO L226 Difference]: Without dead ends: 127 [2019-12-07 16:31:11,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2019-12-07 16:31:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-12-07 16:31:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 88. [2019-12-07 16:31:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-12-07 16:31:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2019-12-07 16:31:11,395 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 13 [2019-12-07 16:31:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:11,395 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2019-12-07 16:31:11,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 16:31:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2019-12-07 16:31:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 16:31:11,396 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:11,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:11,397 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1442172679, now seen corresponding path program 1 times [2019-12-07 16:31:11,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:11,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494780922] [2019-12-07 16:31:11,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:11,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494780922] [2019-12-07 16:31:11,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:11,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 16:31:11,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045236243] [2019-12-07 16:31:11,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:31:11,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:31:11,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:31:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:31:11,486 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand 6 states. [2019-12-07 16:31:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:11,577 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2019-12-07 16:31:11,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 16:31:11,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-12-07 16:31:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:11,579 INFO L225 Difference]: With dead ends: 135 [2019-12-07 16:31:11,579 INFO L226 Difference]: Without dead ends: 113 [2019-12-07 16:31:11,579 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-12-07 16:31:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-12-07 16:31:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2019-12-07 16:31:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 16:31:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2019-12-07 16:31:11,585 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 14 [2019-12-07 16:31:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:11,585 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2019-12-07 16:31:11,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:31:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2019-12-07 16:31:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 16:31:11,586 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:11,586 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:11,586 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1301629257, now seen corresponding path program 1 times [2019-12-07 16:31:11,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:11,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272019240] [2019-12-07 16:31:11,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:11,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272019240] [2019-12-07 16:31:11,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:11,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 16:31:11,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797912704] [2019-12-07 16:31:11,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:31:11,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:31:11,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:31:11,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:31:11,709 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand 6 states. [2019-12-07 16:31:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:11,767 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2019-12-07 16:31:11,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:31:11,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 16:31:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:11,768 INFO L225 Difference]: With dead ends: 109 [2019-12-07 16:31:11,768 INFO L226 Difference]: Without dead ends: 89 [2019-12-07 16:31:11,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:31:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-12-07 16:31:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2019-12-07 16:31:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 16:31:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2019-12-07 16:31:11,775 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 16 [2019-12-07 16:31:11,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:11,776 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2019-12-07 16:31:11,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:31:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2019-12-07 16:31:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 16:31:11,777 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:11,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:11,777 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:11,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1117667873, now seen corresponding path program 1 times [2019-12-07 16:31:11,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:11,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926291701] [2019-12-07 16:31:11,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:12,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926291701] [2019-12-07 16:31:12,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:12,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 16:31:12,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516342696] [2019-12-07 16:31:12,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 16:31:12,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:31:12,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 16:31:12,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:31:12,120 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand 10 states. [2019-12-07 16:31:12,594 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-12-07 16:31:12,965 WARN L192 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-12-07 16:31:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:13,031 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2019-12-07 16:31:13,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 16:31:13,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-12-07 16:31:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:13,032 INFO L225 Difference]: With dead ends: 91 [2019-12-07 16:31:13,032 INFO L226 Difference]: Without dead ends: 73 [2019-12-07 16:31:13,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2019-12-07 16:31:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-12-07 16:31:13,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2019-12-07 16:31:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 16:31:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2019-12-07 16:31:13,036 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 17 [2019-12-07 16:31:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:13,036 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2019-12-07 16:31:13,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 16:31:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2019-12-07 16:31:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 16:31:13,037 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:13,037 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:13,037 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1695763361, now seen corresponding path program 1 times [2019-12-07 16:31:13,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:13,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039493212] [2019-12-07 16:31:13,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:13,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039493212] [2019-12-07 16:31:13,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:13,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-12-07 16:31:13,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996187168] [2019-12-07 16:31:13,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 16:31:13,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:31:13,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 16:31:13,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-12-07 16:31:13,200 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 9 states. [2019-12-07 16:31:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:13,508 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2019-12-07 16:31:13,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 16:31:13,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-12-07 16:31:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:13,509 INFO L225 Difference]: With dead ends: 73 [2019-12-07 16:31:13,509 INFO L226 Difference]: Without dead ends: 65 [2019-12-07 16:31:13,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-12-07 16:31:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-12-07 16:31:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2019-12-07 16:31:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 16:31:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2019-12-07 16:31:13,512 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 17 [2019-12-07 16:31:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:13,512 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2019-12-07 16:31:13,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 16:31:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2019-12-07 16:31:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 16:31:13,513 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:13,513 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:13,513 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:13,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:13,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1958081134, now seen corresponding path program 1 times [2019-12-07 16:31:13,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:31:13,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260196520] [2019-12-07 16:31:13,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:31:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:31:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:31:13,561 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 16:31:13,561 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:31:13,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:31:13 BoogieIcfgContainer [2019-12-07 16:31:13,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:31:13,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:31:13,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:31:13,579 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:31:13,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:31:10" (3/4) ... [2019-12-07 16:31:13,582 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:31:13,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:31:13,583 INFO L168 Benchmark]: Toolchain (without parser) took 3974.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 944.7 MB in the beginning and 805.5 MB in the end (delta: 139.2 MB). Peak memory consumption was 216.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:13,584 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:31:13,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:13,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:13,585 INFO L168 Benchmark]: Boogie Preprocessor took 21.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:31:13,586 INFO L168 Benchmark]: RCFGBuilder took 365.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:13,586 INFO L168 Benchmark]: TraceAbstraction took 3314.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 810.2 MB in the end (delta: 211.7 MB). Peak memory consumption was 211.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:13,587 INFO L168 Benchmark]: Witness Printer took 3.28 ms. Allocated memory is still 1.1 GB. Free memory was 810.2 MB in the beginning and 805.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:13,589 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 365.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3314.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 810.2 MB in the end (delta: 211.7 MB). Peak memory consumption was 211.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.28 ms. Allocated memory is still 1.1 GB. Free memory was 810.2 MB in the beginning and 805.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 7 error locations. Result: UNSAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 472 SDtfs, 354 SDslu, 2319 SDs, 0 SdLazy, 639 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 135 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 9035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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 0.1.25-f470102 [2019-12-07 16:31:14,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:31:14,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:31:14,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:31:14,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:31:14,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:31:14,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:31:14,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:31:14,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:31:14,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:31:14,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:31:14,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:31:14,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:31:14,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:31:14,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:31:14,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:31:14,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:31:14,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:31:14,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:31:14,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:31:14,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:31:14,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:31:14,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:31:14,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:31:14,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:31:14,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:31:14,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:31:14,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:31:14,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:31:14,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:31:14,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:31:14,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:31:14,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:31:14,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:31:14,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:31:14,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:31:14,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:31:14,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:31:14,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:31:15,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:31:15,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:31:15,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 16:31:15,014 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:31:15,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:31:15,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:31:15,015 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:31:15,015 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:31:15,015 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:31:15,016 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:31:15,016 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:31:15,016 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:31:15,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:31:15,017 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:31:15,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:31:15,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:31:15,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:31:15,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:31:15,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:31:15,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:31:15,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:31:15,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:31:15,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:31:15,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:31:15,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:31:15,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:31:15,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:31:15,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:31:15,020 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 16:31:15,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:31:15,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:31:15,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:31:15,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:31:15,021 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_1f168809-d409-4860-82f1-380f6700b747/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(__VERIFIER_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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-12-07 16:31:15,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:31:15,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:31:15,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:31:15,196 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:31:15,196 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:31:15,196 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 16:31:15,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/259b8a491/f33678d3dbfe498a8285a750cb77d5ff/FLAGe1fc2ba64 [2019-12-07 16:31:15,644 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:31:15,644 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 16:31:15,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/259b8a491/f33678d3dbfe498a8285a750cb77d5ff/FLAGe1fc2ba64 [2019-12-07 16:31:16,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/data/259b8a491/f33678d3dbfe498a8285a750cb77d5ff [2019-12-07 16:31:16,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:31:16,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:31:16,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:31:16,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:31:16,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:31:16,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10831c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16, skipping insertion in model container [2019-12-07 16:31:16,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:31:16,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:31:16,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:31:16,177 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:31:16,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:31:16,240 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:31:16,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16 WrapperNode [2019-12-07 16:31:16,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:31:16,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:31:16,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:31:16,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:31:16,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:31:16,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:31:16,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:31:16,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:31:16,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... [2019-12-07 16:31:16,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:31:16,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:31:16,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:31:16,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:31:16,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/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 [2019-12-07 16:31:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:31:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:31:16,650 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:31:16,650 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-12-07 16:31:16,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:31:16 BoogieIcfgContainer [2019-12-07 16:31:16,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:31:16,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:31:16,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:31:16,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:31:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:31:16" (1/3) ... [2019-12-07 16:31:16,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484aa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:31:16, skipping insertion in model container [2019-12-07 16:31:16,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:31:16" (2/3) ... [2019-12-07 16:31:16,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484aa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:31:16, skipping insertion in model container [2019-12-07 16:31:16,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:31:16" (3/3) ... [2019-12-07 16:31:16,658 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-12-07 16:31:16,665 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:31:16,671 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 16:31:16,680 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 16:31:16,696 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:31:16,696 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:31:16,696 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:31:16,696 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:31:16,696 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:31:16,696 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:31:16,697 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:31:16,697 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:31:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-12-07 16:31:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 16:31:16,712 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:16,713 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:16,713 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:16,717 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-12-07 16:31:16,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:16,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535450264] [2019-12-07 16:31:16,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/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 [2019-12-07 16:31:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:16,768 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 16:31:16,772 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:16,807 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:16,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535450264] [2019-12-07 16:31:16,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:16,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 16:31:16,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170057533] [2019-12-07 16:31:16,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:31:16,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:31:16,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:31:16,841 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 5 states. [2019-12-07 16:31:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:16,949 INFO L93 Difference]: Finished difference Result 230 states and 332 transitions. [2019-12-07 16:31:16,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 16:31:16,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 16:31:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:16,957 INFO L225 Difference]: With dead ends: 230 [2019-12-07 16:31:16,958 INFO L226 Difference]: Without dead ends: 138 [2019-12-07 16:31:16,960 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:31:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-12-07 16:31:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2019-12-07 16:31:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-12-07 16:31:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2019-12-07 16:31:16,996 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 14 [2019-12-07 16:31:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:16,997 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2019-12-07 16:31:16,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:31:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2019-12-07 16:31:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 16:31:16,998 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:16,998 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:17,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:31:17,199 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:17,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1540311893, now seen corresponding path program 1 times [2019-12-07 16:31:17,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:17,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099054332] [2019-12-07 16:31:17,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/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 [2019-12-07 16:31:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:17,258 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 16:31:17,259 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:17,280 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:17,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099054332] [2019-12-07 16:31:17,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:17,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-12-07 16:31:17,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473016918] [2019-12-07 16:31:17,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:31:17,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:17,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:31:17,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:31:17,295 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand 6 states. [2019-12-07 16:31:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:17,449 INFO L93 Difference]: Finished difference Result 225 states and 284 transitions. [2019-12-07 16:31:17,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 16:31:17,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-12-07 16:31:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:17,451 INFO L225 Difference]: With dead ends: 225 [2019-12-07 16:31:17,452 INFO L226 Difference]: Without dead ends: 199 [2019-12-07 16:31:17,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-12-07 16:31:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-12-07 16:31:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 118. [2019-12-07 16:31:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-12-07 16:31:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 161 transitions. [2019-12-07 16:31:17,466 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 161 transitions. Word has length 18 [2019-12-07 16:31:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:17,466 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 161 transitions. [2019-12-07 16:31:17,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:31:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 161 transitions. [2019-12-07 16:31:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 16:31:17,467 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:17,467 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:17,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 16:31:17,668 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1417428804, now seen corresponding path program 1 times [2019-12-07 16:31:17,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:17,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673135587] [2019-12-07 16:31:17,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/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 [2019-12-07 16:31:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:17,697 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 16:31:17,698 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:17,724 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:17,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673135587] [2019-12-07 16:31:17,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:17,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 16:31:17,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323169523] [2019-12-07 16:31:17,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 16:31:17,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:17,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 16:31:17,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:31:17,730 INFO L87 Difference]: Start difference. First operand 118 states and 161 transitions. Second operand 7 states. [2019-12-07 16:31:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:17,914 INFO L93 Difference]: Finished difference Result 213 states and 265 transitions. [2019-12-07 16:31:17,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 16:31:17,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-12-07 16:31:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:17,916 INFO L225 Difference]: With dead ends: 213 [2019-12-07 16:31:17,916 INFO L226 Difference]: Without dead ends: 184 [2019-12-07 16:31:17,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-12-07 16:31:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-12-07 16:31:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-12-07 16:31:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-12-07 16:31:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-12-07 16:31:17,927 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 18 [2019-12-07 16:31:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:17,928 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-12-07 16:31:17,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 16:31:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-12-07 16:31:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 16:31:17,929 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:17,929 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:18,130 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 16:31:18,130 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:18,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-12-07 16:31:18,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:18,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720655239] [2019-12-07 16:31:18,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/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 [2019-12-07 16:31:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:18,194 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 16:31:18,196 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:18,257 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:18,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720655239] [2019-12-07 16:31:18,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:18,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-12-07 16:31:18,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952459634] [2019-12-07 16:31:18,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 16:31:18,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 16:31:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-12-07 16:31:18,278 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-12-07 16:31:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:18,478 INFO L93 Difference]: Finished difference Result 182 states and 229 transitions. [2019-12-07 16:31:18,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 16:31:18,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-12-07 16:31:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:18,480 INFO L225 Difference]: With dead ends: 182 [2019-12-07 16:31:18,481 INFO L226 Difference]: Without dead ends: 178 [2019-12-07 16:31:18,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-12-07 16:31:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-12-07 16:31:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 124. [2019-12-07 16:31:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-12-07 16:31:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2019-12-07 16:31:18,490 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 22 [2019-12-07 16:31:18,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:18,490 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2019-12-07 16:31:18,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 16:31:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2019-12-07 16:31:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 16:31:18,491 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:18,492 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:18,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 16:31:18,694 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-12-07 16:31:18,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:18,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138871882] [2019-12-07 16:31:18,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 16:31:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:18,774 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 16:31:18,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:18,812 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:18,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138871882] [2019-12-07 16:31:18,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:18,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 16:31:18,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996937623] [2019-12-07 16:31:18,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 16:31:18,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:18,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 16:31:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:31:18,818 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 7 states. [2019-12-07 16:31:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:18,940 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2019-12-07 16:31:18,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 16:31:18,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-12-07 16:31:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:18,942 INFO L225 Difference]: With dead ends: 181 [2019-12-07 16:31:18,942 INFO L226 Difference]: Without dead ends: 148 [2019-12-07 16:31:18,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-12-07 16:31:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-12-07 16:31:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 118. [2019-12-07 16:31:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-12-07 16:31:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2019-12-07 16:31:18,952 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 155 transitions. Word has length 22 [2019-12-07 16:31:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:18,952 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 155 transitions. [2019-12-07 16:31:18,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 16:31:18,953 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 155 transitions. [2019-12-07 16:31:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 16:31:18,954 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:18,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:19,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 16:31:19,155 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:19,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-12-07 16:31:19,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:19,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822193705] [2019-12-07 16:31:19,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 16:31:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:19,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 16:31:19,221 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:19,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:31:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:19,268 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:19,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822193705] [2019-12-07 16:31:19,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:19,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 16:31:19,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236297136] [2019-12-07 16:31:19,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:31:19,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:31:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:31:19,318 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. Second operand 6 states. [2019-12-07 16:31:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:19,481 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2019-12-07 16:31:19,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 16:31:19,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-12-07 16:31:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:19,482 INFO L225 Difference]: With dead ends: 182 [2019-12-07 16:31:19,482 INFO L226 Difference]: Without dead ends: 178 [2019-12-07 16:31:19,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:31:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-12-07 16:31:19,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2019-12-07 16:31:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-12-07 16:31:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 151 transitions. [2019-12-07 16:31:19,488 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 151 transitions. Word has length 22 [2019-12-07 16:31:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:19,489 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 151 transitions. [2019-12-07 16:31:19,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:31:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 151 transitions. [2019-12-07 16:31:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 16:31:19,490 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:19,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:19,691 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 16:31:19,691 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:19,692 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-12-07 16:31:19,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:19,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882571832] [2019-12-07 16:31:19,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 16:31:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:19,747 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 16:31:19,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:19,826 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:19,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882571832] [2019-12-07 16:31:19,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:19,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-12-07 16:31:19,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813595583] [2019-12-07 16:31:19,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 16:31:19,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 16:31:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-12-07 16:31:19,853 INFO L87 Difference]: Start difference. First operand 114 states and 151 transitions. Second operand 9 states. [2019-12-07 16:31:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:20,270 INFO L93 Difference]: Finished difference Result 164 states and 203 transitions. [2019-12-07 16:31:20,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 16:31:20,270 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-12-07 16:31:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:20,271 INFO L225 Difference]: With dead ends: 164 [2019-12-07 16:31:20,271 INFO L226 Difference]: Without dead ends: 159 [2019-12-07 16:31:20,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-12-07 16:31:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-12-07 16:31:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2019-12-07 16:31:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-12-07 16:31:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2019-12-07 16:31:20,277 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 24 [2019-12-07 16:31:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:20,277 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2019-12-07 16:31:20,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 16:31:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2019-12-07 16:31:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 16:31:20,278 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:20,278 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:20,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 16:31:20,479 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:20,479 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-12-07 16:31:20,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:20,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338193222] [2019-12-07 16:31:20,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 16:31:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:31:20,505 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 16:31:20,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:31:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:20,533 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:31:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:31:20,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338193222] [2019-12-07 16:31:20,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:31:20,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-12-07 16:31:20,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998231177] [2019-12-07 16:31:20,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:31:20,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:31:20,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:31:20,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:31:20,540 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand 6 states. [2019-12-07 16:31:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:31:20,618 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2019-12-07 16:31:20,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 16:31:20,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-12-07 16:31:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:31:20,620 INFO L225 Difference]: With dead ends: 144 [2019-12-07 16:31:20,620 INFO L226 Difference]: Without dead ends: 125 [2019-12-07 16:31:20,620 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:31:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-12-07 16:31:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2019-12-07 16:31:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-12-07 16:31:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2019-12-07 16:31:20,627 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 24 [2019-12-07 16:31:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:31:20,627 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2019-12-07 16:31:20,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:31:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2019-12-07 16:31:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 16:31:20,628 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:31:20,628 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:31:20,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 16:31:20,829 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:31:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:31:20,830 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-12-07 16:31:20,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:31:20,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392181273] [2019-12-07 16:31:20,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 16:31:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:31:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:31:20,925 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 16:31:20,925 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:31:21,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 16:31:21,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:31:21 BoogieIcfgContainer [2019-12-07 16:31:21,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:31:21,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:31:21,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:31:21,163 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:31:21,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:31:16" (3/4) ... [2019-12-07 16:31:21,165 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 16:31:21,204 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1f168809-d409-4860-82f1-380f6700b747/bin/utaipan/witness.graphml [2019-12-07 16:31:21,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:31:21,205 INFO L168 Benchmark]: Toolchain (without parser) took 5182.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -111.8 MB). Peak memory consumption was 85.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:21,205 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:31:21,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:21,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:21,206 INFO L168 Benchmark]: Boogie Preprocessor took 23.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:31:21,207 INFO L168 Benchmark]: RCFGBuilder took 352.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:21,207 INFO L168 Benchmark]: TraceAbstraction took 4510.25 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.7 MB). Peak memory consumption was 91.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:31:21,207 INFO L168 Benchmark]: Witness Printer took 41.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:31:21,208 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 352.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4510.25 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.7 MB). Peak memory consumption was 91.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 852 SDtfs, 1261 SDslu, 3672 SDs, 0 SdLazy, 632 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 401 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 11560 SizeOfPredicates, 49 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...