./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer --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 Automizer --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_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer --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 Automizer --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 0.1.24-cad4683 [2019-11-15 21:41:00,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:41:00,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:41:00,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:41:00,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:41:00,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:41:00,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:41:00,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:41:00,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:41:00,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:41:00,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:41:00,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:41:00,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:41:00,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:41:00,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:41:00,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:41:00,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:41:00,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:41:00,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:41:00,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:41:00,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:41:00,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:41:00,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:41:00,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:41:00,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:41:00,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:41:00,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:41:00,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:41:00,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:41:00,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:41:00,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:41:00,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:41:00,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:41:00,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:41:00,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:41:00,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:41:00,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:41:00,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:41:00,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:41:00,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:41:00,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:41:00,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:41:00,455 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:41:00,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:41:00,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:41:00,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:41:00,457 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:41:00,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:41:00,458 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:41:00,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:41:00,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:41:00,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:41:00,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:41:00,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:41:00,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:41:00,459 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:41:00,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:41:00,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:41:00,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:41:00,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:41:00,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:41:00,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:41:00,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:41:00,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:41:00,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:41:00,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:41:00,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:41:00,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:41:00,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:41:00,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:41:00,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer 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 -> Automizer 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 [2019-11-15 21:41:00,487 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:41:00,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:41:00,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:41:00,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:41:00,503 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:41:00,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-15 21:41:00,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/b9e64b903/a87594b9a5974f718388c23cce33338f/FLAG8bc09af7c [2019-11-15 21:41:01,004 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:41:01,004 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-15 21:41:01,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/b9e64b903/a87594b9a5974f718388c23cce33338f/FLAG8bc09af7c [2019-11-15 21:41:01,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/b9e64b903/a87594b9a5974f718388c23cce33338f [2019-11-15 21:41:01,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:41:01,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:41:01,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:41:01,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:41:01,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:41:01,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e4763e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01, skipping insertion in model container [2019-11-15 21:41:01,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,049 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:41:01,086 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:41:01,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:41:01,338 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:41:01,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:41:01,385 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:41:01,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01 WrapperNode [2019-11-15 21:41:01,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:41:01,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:41:01,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:41:01,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:41:01,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:41:01,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:41:01,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:41:01,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:41:01,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... [2019-11-15 21:41:01,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:41:01,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:41:01,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:41:01,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:41:01,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/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 [2019-11-15 21:41:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:41:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:41:02,038 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:41:02,038 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-15 21:41:02,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:02 BoogieIcfgContainer [2019-11-15 21:41:02,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:41:02,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:41:02,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:41:02,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:41:02,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:41:01" (1/3) ... [2019-11-15 21:41:02,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c39258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:41:02, skipping insertion in model container [2019-11-15 21:41:02,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:01" (2/3) ... [2019-11-15 21:41:02,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c39258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:41:02, skipping insertion in model container [2019-11-15 21:41:02,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:02" (3/3) ... [2019-11-15 21:41:02,050 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-15 21:41:02,058 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:41:02,067 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-15 21:41:02,077 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-15 21:41:02,115 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:41:02,116 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:41:02,116 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:41:02,116 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:41:02,116 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:41:02,117 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:41:02,117 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:41:02,117 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:41:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-15 21:41:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:41:02,143 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:02,144 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:41:02,147 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-15 21:41:02,161 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:02,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38773175] [2019-11-15 21:41:02,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:02,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:02,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:02,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38773175] [2019-11-15 21:41:02,451 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:02,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 21:41:02,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277968099] [2019-11-15 21:41:02,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:41:02,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:41:02,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:41:02,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:41:02,467 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-11-15 21:41:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:03,020 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-11-15 21:41:03,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 21:41:03,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-15 21:41:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:03,042 INFO L225 Difference]: With dead ends: 269 [2019-11-15 21:41:03,043 INFO L226 Difference]: Without dead ends: 170 [2019-11-15 21:41:03,049 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-11-15 21:41:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-15 21:41:03,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-11-15 21:41:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-15 21:41:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-11-15 21:41:03,126 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-11-15 21:41:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:03,126 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-11-15 21:41:03,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:41:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-11-15 21:41:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 21:41:03,129 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:03,130 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:41:03,131 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:03,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-11-15 21:41:03,131 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:03,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037594093] [2019-11-15 21:41:03,132 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:03,132 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:03,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:03,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037594093] [2019-11-15 21:41:03,320 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:03,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 21:41:03,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633684916] [2019-11-15 21:41:03,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:41:03,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:41:03,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:41:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:41:03,323 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-11-15 21:41:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:03,635 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-11-15 21:41:03,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 21:41:03,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-15 21:41:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:03,638 INFO L225 Difference]: With dead ends: 183 [2019-11-15 21:41:03,638 INFO L226 Difference]: Without dead ends: 154 [2019-11-15 21:41:03,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-15 21:41:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-15 21:41:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-11-15 21:41:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-15 21:41:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-11-15 21:41:03,651 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-11-15 21:41:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:03,652 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-11-15 21:41:03,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:41:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-11-15 21:41:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:41:03,653 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:03,653 INFO L380 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] [2019-11-15 21:41:03,654 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:03,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:03,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-15 21:41:03,654 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:03,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398658674] [2019-11-15 21:41:03,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:03,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:03,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:03,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398658674] [2019-11-15 21:41:03,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:03,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-15 21:41:03,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22124352] [2019-11-15 21:41:03,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 21:41:03,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:41:03,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 21:41:03,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:41:03,975 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-11-15 21:41:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:05,139 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-11-15 21:41:05,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 21:41:05,142 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-11-15 21:41:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:05,144 INFO L225 Difference]: With dead ends: 225 [2019-11-15 21:41:05,144 INFO L226 Difference]: Without dead ends: 221 [2019-11-15 21:41:05,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-11-15 21:41:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-11-15 21:41:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-11-15 21:41:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-15 21:41:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-11-15 21:41:05,158 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-11-15 21:41:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:05,159 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-11-15 21:41:05,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 21:41:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-11-15 21:41:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:41:05,160 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:05,160 INFO L380 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] [2019-11-15 21:41:05,161 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-11-15 21:41:05,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:05,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035605349] [2019-11-15 21:41:05,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:05,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:05,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:05,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035605349] [2019-11-15 21:41:05,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:05,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 21:41:05,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531199060] [2019-11-15 21:41:05,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:41:05,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:41:05,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:41:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:41:05,322 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-11-15 21:41:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:05,547 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-11-15 21:41:05,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:41:05,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-15 21:41:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:05,549 INFO L225 Difference]: With dead ends: 171 [2019-11-15 21:41:05,550 INFO L226 Difference]: Without dead ends: 146 [2019-11-15 21:41:05,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:41:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-15 21:41:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-11-15 21:41:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-15 21:41:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-15 21:41:05,568 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-15 21:41:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:05,569 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-15 21:41:05,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:41:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-15 21:41:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:41:05,571 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:05,571 INFO L380 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] [2019-11-15 21:41:05,572 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:05,572 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-11-15 21:41:05,572 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:05,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114766029] [2019-11-15 21:41:05,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:05,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:05,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:05,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114766029] [2019-11-15 21:41:05,758 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:05,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 21:41:05,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094288657] [2019-11-15 21:41:05,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:41:05,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:41:05,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:41:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:41:05,759 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-11-15 21:41:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:05,943 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-11-15 21:41:05,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 21:41:05,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-15 21:41:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:05,944 INFO L225 Difference]: With dead ends: 157 [2019-11-15 21:41:05,945 INFO L226 Difference]: Without dead ends: 132 [2019-11-15 21:41:05,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-15 21:41:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-15 21:41:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-11-15 21:41:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-15 21:41:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-15 21:41:05,954 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-15 21:41:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:05,954 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-15 21:41:05,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:41:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-15 21:41:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:41:05,956 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:05,956 INFO L380 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] [2019-11-15 21:41:05,956 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:05,956 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-15 21:41:05,957 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:05,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465995752] [2019-11-15 21:41:05,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:05,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:05,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:06,064 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:06,064 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:41:06,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:41:06 BoogieIcfgContainer [2019-11-15 21:41:06,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:41:06,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:41:06,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:41:06,104 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:41:06,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:02" (3/4) ... [2019-11-15 21:41:06,108 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:41:06,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:41:06,111 INFO L168 Benchmark]: Toolchain (without parser) took 5076.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.1 MB in the beginning and 897.2 MB in the end (delta: 48.9 MB). Peak memory consumption was 189.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:06,111 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:41:06,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:06,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.14 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:06,114 INFO L168 Benchmark]: Boogie Preprocessor took 35.96 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. [2019-11-15 21:41:06,118 INFO L168 Benchmark]: RCFGBuilder took 572.23 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:06,118 INFO L168 Benchmark]: TraceAbstraction took 4063.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.2 MB in the end (delta: 198.8 MB). Peak memory consumption was 198.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:06,119 INFO L168 Benchmark]: Witness Printer took 4.36 ms. Allocated memory is still 1.2 GB. Free memory is still 897.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:41:06,125 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -189.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.14 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.96 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 572.23 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4063.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.2 MB in the end (delta: 198.8 MB). Peak memory consumption was 198.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.36 ms. Allocated memory is still 1.2 GB. Free memory is still 897.2 MB. There was no memory consumed. 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 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 TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 8117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 0.1.24-cad4683 [2019-11-15 21:41:08,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:41:08,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:41:08,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:41:08,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:41:08,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:41:08,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:41:08,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:41:08,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:41:08,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:41:08,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:41:08,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:41:08,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:41:08,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:41:08,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:41:08,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:41:08,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:41:08,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:41:08,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:41:08,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:41:08,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:41:08,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:41:08,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:41:08,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:41:08,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:41:08,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:41:08,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:41:08,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:41:08,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:41:08,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:41:08,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:41:08,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:41:08,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:41:08,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:41:08,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:41:08,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:41:08,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:41:08,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:41:08,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:41:08,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:41:08,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:41:08,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:41:08,419 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:41:08,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:41:08,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:41:08,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:41:08,421 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:41:08,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:41:08,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:41:08,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:41:08,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:41:08,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:41:08,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:41:08,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:41:08,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:41:08,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:41:08,423 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:41:08,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:41:08,423 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:41:08,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:41:08,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:41:08,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:41:08,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:41:08,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:41:08,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:41:08,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:41:08,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:41:08,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:41:08,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:41:08,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:41:08,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:41:08,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:41:08,426 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_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer 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 -> Automizer 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 [2019-11-15 21:41:08,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:41:08,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:41:08,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:41:08,477 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:41:08,477 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:41:08,478 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-15 21:41:08,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/585b55e0b/1e4452bd1d124b47a23cbfc3b6c92a25/FLAGa922017d1 [2019-11-15 21:41:08,894 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:41:08,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-15 21:41:08,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/585b55e0b/1e4452bd1d124b47a23cbfc3b6c92a25/FLAGa922017d1 [2019-11-15 21:41:09,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/data/585b55e0b/1e4452bd1d124b47a23cbfc3b6c92a25 [2019-11-15 21:41:09,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:41:09,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:41:09,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:41:09,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:41:09,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:41:09,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4f71e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09, skipping insertion in model container [2019-11-15 21:41:09,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,279 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:41:09,318 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:41:09,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:41:09,587 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:41:09,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:41:09,748 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:41:09,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09 WrapperNode [2019-11-15 21:41:09,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:41:09,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:41:09,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:41:09,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:41:09,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:41:09,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:41:09,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:41:09,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:41:09,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... [2019-11-15 21:41:09,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:41:09,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:41:09,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:41:09,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:41:09,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/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 [2019-11-15 21:41:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:41:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:41:10,411 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:41:10,411 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-15 21:41:10,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:10 BoogieIcfgContainer [2019-11-15 21:41:10,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:41:10,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:41:10,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:41:10,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:41:10,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:41:09" (1/3) ... [2019-11-15 21:41:10,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b57e018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:41:10, skipping insertion in model container [2019-11-15 21:41:10,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:09" (2/3) ... [2019-11-15 21:41:10,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b57e018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:41:10, skipping insertion in model container [2019-11-15 21:41:10,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:10" (3/3) ... [2019-11-15 21:41:10,420 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-15 21:41:10,432 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:41:10,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-15 21:41:10,450 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-15 21:41:10,473 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:41:10,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:41:10,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:41:10,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:41:10,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:41:10,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:41:10,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:41:10,474 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:41:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-15 21:41:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:41:10,492 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:10,492 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:41:10,494 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:10,498 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-15 21:41:10,505 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:41:10,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [146378540] [2019-11-15 21:41:10,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:10,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 21:41:10,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:10,662 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:41:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:10,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146378540] [2019-11-15 21:41:10,672 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:10,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-15 21:41:10,673 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93606923] [2019-11-15 21:41:10,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 21:41:10,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:41:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 21:41:10,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 21:41:10,692 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 7 states. [2019-11-15 21:41:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:11,108 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2019-11-15 21:41:11,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 21:41:11,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-15 21:41:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:11,121 INFO L225 Difference]: With dead ends: 284 [2019-11-15 21:41:11,122 INFO L226 Difference]: Without dead ends: 184 [2019-11-15 21:41:11,125 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-15 21:41:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-15 21:41:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-11-15 21:41:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-15 21:41:11,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-11-15 21:41:11,203 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 14 [2019-11-15 21:41:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:11,204 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-11-15 21:41:11,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 21:41:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-11-15 21:41:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:41:11,208 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:11,208 INFO L380 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] [2019-11-15 21:41:11,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:11,410 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:11,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:11,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-15 21:41:11,411 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:41:11,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1211914608] [2019-11-15 21:41:11,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:11,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:41:11,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:11,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:41:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:11,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1211914608] [2019-11-15 21:41:11,600 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:11,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-11-15 21:41:11,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138974630] [2019-11-15 21:41:11,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 21:41:11,603 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:41:11,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 21:41:11,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:41:11,603 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-11-15 21:41:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:11,923 INFO L93 Difference]: Finished difference Result 190 states and 240 transitions. [2019-11-15 21:41:11,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 21:41:11,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-11-15 21:41:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:11,927 INFO L225 Difference]: With dead ends: 190 [2019-11-15 21:41:11,927 INFO L226 Difference]: Without dead ends: 165 [2019-11-15 21:41:11,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-11-15 21:41:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-11-15 21:41:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2019-11-15 21:41:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-15 21:41:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2019-11-15 21:41:11,956 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 22 [2019-11-15 21:41:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:11,956 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2019-11-15 21:41:11,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 21:41:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2019-11-15 21:41:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 21:41:11,959 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:11,960 INFO L380 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] [2019-11-15 21:41:12,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:12,166 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-15 21:41:12,170 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:41:12,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2089254852] [2019-11-15 21:41:12,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:12,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:41:12,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:12,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 21:41:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:12,320 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:41:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:12,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2089254852] [2019-11-15 21:41:12,349 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:12,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 21:41:12,350 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999961175] [2019-11-15 21:41:12,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:41:12,350 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:41:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:41:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:41:12,351 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand 6 states. [2019-11-15 21:41:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:12,628 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2019-11-15 21:41:12,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 21:41:12,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-15 21:41:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:12,631 INFO L225 Difference]: With dead ends: 177 [2019-11-15 21:41:12,631 INFO L226 Difference]: Without dead ends: 173 [2019-11-15 21:41:12,632 INFO L600 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 [2019-11-15 21:41:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-15 21:41:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2019-11-15 21:41:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-15 21:41:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2019-11-15 21:41:12,644 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 22 [2019-11-15 21:41:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:12,645 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2019-11-15 21:41:12,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:41:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2019-11-15 21:41:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:41:12,646 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:12,646 INFO L380 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] [2019-11-15 21:41:12,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:12,850 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-11-15 21:41:12,850 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:41:12,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1988718627] [2019-11-15 21:41:12,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:12,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:41:12,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:12,970 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:41:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:12,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1988718627] [2019-11-15 21:41:12,993 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:12,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-11-15 21:41:12,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987739130] [2019-11-15 21:41:12,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 21:41:12,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:41:12,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 21:41:12,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-15 21:41:12,995 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand 9 states. [2019-11-15 21:41:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:13,368 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2019-11-15 21:41:13,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 21:41:13,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-15 21:41:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:13,370 INFO L225 Difference]: With dead ends: 173 [2019-11-15 21:41:13,370 INFO L226 Difference]: Without dead ends: 168 [2019-11-15 21:41:13,371 INFO L600 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 [2019-11-15 21:41:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-11-15 21:41:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 120. [2019-11-15 21:41:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-15 21:41:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2019-11-15 21:41:13,380 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 24 [2019-11-15 21:41:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:13,380 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2019-11-15 21:41:13,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 21:41:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2019-11-15 21:41:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:41:13,382 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:13,382 INFO L380 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] [2019-11-15 21:41:13,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:13,594 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:13,594 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-11-15 21:41:13,594 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:41:13,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1728134050] [2019-11-15 21:41:13,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:13,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:41:13,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:13,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:41:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:13,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1728134050] [2019-11-15 21:41:13,724 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:41:13,724 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-11-15 21:41:13,724 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281530499] [2019-11-15 21:41:13,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:41:13,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:41:13,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:41:13,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:41:13,725 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand 6 states. [2019-11-15 21:41:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:41:13,838 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2019-11-15 21:41:13,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 21:41:13,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-15 21:41:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:41:13,839 INFO L225 Difference]: With dead ends: 137 [2019-11-15 21:41:13,840 INFO L226 Difference]: Without dead ends: 118 [2019-11-15 21:41:13,840 INFO L600 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 [2019-11-15 21:41:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-15 21:41:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-11-15 21:41:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-15 21:41:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2019-11-15 21:41:13,849 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 24 [2019-11-15 21:41:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:41:13,850 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2019-11-15 21:41:13,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:41:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2019-11-15 21:41:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:41:13,851 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:41:13,851 INFO L380 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] [2019-11-15 21:41:14,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:14,058 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:41:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:14,058 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-11-15 21:41:14,059 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:41:14,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [521522694] [2019-11-15 21:41:14,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:14,228 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 21:41:14,229 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:41:14,437 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:41:14,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:41:14 BoogieIcfgContainer [2019-11-15 21:41:14,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:41:14,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:41:14,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:41:14,464 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:41:14,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:10" (3/4) ... [2019-11-15 21:41:14,466 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:41:14,525 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1797ce9-72e7-4435-a219-6647fa968607/bin/uautomizer/witness.graphml [2019-11-15 21:41:14,525 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:41:14,527 INFO L168 Benchmark]: Toolchain (without parser) took 5261.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 945.6 MB in the beginning and 824.2 MB in the end (delta: 121.5 MB). Peak memory consumption was 271.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:14,527 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:41:14,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:14,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.05 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. [2019-11-15 21:41:14,528 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 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. [2019-11-15 21:41:14,529 INFO L168 Benchmark]: RCFGBuilder took 556.08 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:14,529 INFO L168 Benchmark]: TraceAbstraction took 4049.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 827.7 MB in the end (delta: 278.4 MB). Peak memory consumption was 278.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:14,530 INFO L168 Benchmark]: Witness Printer took 61.70 ms. Allocated memory is still 1.2 GB. Free memory was 827.7 MB in the beginning and 824.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:14,532 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 483.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.05 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. * Boogie Preprocessor took 32.81 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 556.08 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4049.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 827.7 MB in the end (delta: 278.4 MB). Peak memory consumption was 278.4 MB. Max. memory is 11.5 GB. * Witness Printer took 61.70 ms. Allocated memory is still 1.2 GB. Free memory was 827.7 MB in the beginning and 824.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. 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: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 555 SDtfs, 756 SDslu, 2473 SDs, 0 SdLazy, 427 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 239 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 7672 SizeOfPredicates, 35 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...