./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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 0.1.25-f470102 [2019-12-07 15:44:00,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:44:00,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:44:00,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:44:00,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:44:00,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:44:00,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:44:00,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:44:00,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:44:00,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:44:00,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:44:00,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:44:00,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:44:00,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:44:00,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:44:00,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:44:00,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:44:00,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:44:00,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:44:00,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:44:00,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:44:00,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:44:00,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:44:00,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:44:00,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:44:00,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:44:00,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:44:00,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:44:00,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:44:00,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:44:00,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:44:00,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:44:00,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:44:00,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:44:00,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:44:00,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:44:00,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:44:00,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:44:00,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:44:00,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:44:00,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:44:00,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:44:00,483 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:44:00,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:44:00,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:44:00,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:44:00,484 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:44:00,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:44:00,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:44:00,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:44:00,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:44:00,486 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:44:00,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:44:00,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:44:00,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:44:00,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:44:00,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:44:00,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:44:00,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:44:00,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:44:00,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:44:00,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:44:00,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:44:00,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:44:00,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:44:00,487 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_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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 [2019-12-07 15:44:00,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:44:00,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:44:00,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:44:00,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:44:00,603 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:44:00,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 15:44:00,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/638691f07/915754cc1bc74470be7a3f553b35bc3e/FLAGe880c8027 [2019-12-07 15:44:00,996 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:44:00,997 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 15:44:01,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/638691f07/915754cc1bc74470be7a3f553b35bc3e/FLAGe880c8027 [2019-12-07 15:44:01,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/638691f07/915754cc1bc74470be7a3f553b35bc3e [2019-12-07 15:44:01,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:44:01,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:44:01,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:01,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:44:01,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:44:01,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39474158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01, skipping insertion in model container [2019-12-07 15:44:01,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:44:01,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:44:01,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:01,201 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:44:01,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:01,235 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:44:01,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01 WrapperNode [2019-12-07 15:44:01,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:01,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:01,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:44:01,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:44:01,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:01,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:44:01,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:44:01,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:44:01,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... [2019-12-07 15:44:01,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:44:01,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:44:01,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:44:01,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:44:01,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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 [2019-12-07 15:44:01,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:44:01,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:44:01,575 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:44:01,576 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-12-07 15:44:01,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:01 BoogieIcfgContainer [2019-12-07 15:44:01,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:44:01,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:44:01,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:44:01,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:44:01,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:44:01" (1/3) ... [2019-12-07 15:44:01,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b155b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:01, skipping insertion in model container [2019-12-07 15:44:01,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:01" (2/3) ... [2019-12-07 15:44:01,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b155b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:01, skipping insertion in model container [2019-12-07 15:44:01,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:01" (3/3) ... [2019-12-07 15:44:01,581 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-12-07 15:44:01,587 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:44:01,592 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 15:44:01,599 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 15:44:01,615 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:44:01,615 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:44:01,615 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:44:01,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:44:01,615 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:44:01,615 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:44:01,615 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:44:01,616 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:44:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-12-07 15:44:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:44:01,632 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:01,632 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:01,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-12-07 15:44:01,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:01,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83782711] [2019-12-07 15:44:01,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:01,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83782711] [2019-12-07 15:44:01,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:01,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 15:44:01,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272529696] [2019-12-07 15:44:01,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:44:01,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:01,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:44:01,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:44:01,858 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-12-07 15:44:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:02,140 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-12-07 15:44:02,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 15:44:02,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-12-07 15:44:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:02,150 INFO L225 Difference]: With dead ends: 269 [2019-12-07 15:44:02,150 INFO L226 Difference]: Without dead ends: 170 [2019-12-07 15:44:02,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:44:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-12-07 15:44:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-12-07 15:44:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-12-07 15:44:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-12-07 15:44:02,186 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-12-07 15:44:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:02,186 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-12-07 15:44:02,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:44:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-12-07 15:44:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:44:02,187 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:02,187 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:02,187 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-12-07 15:44:02,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:02,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492350287] [2019-12-07 15:44:02,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:02,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492350287] [2019-12-07 15:44:02,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:02,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 15:44:02,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063401054] [2019-12-07 15:44:02,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:44:02,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:02,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:44:02,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:44:02,308 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-12-07 15:44:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:02,487 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-12-07 15:44:02,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 15:44:02,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-12-07 15:44:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:02,489 INFO L225 Difference]: With dead ends: 183 [2019-12-07 15:44:02,489 INFO L226 Difference]: Without dead ends: 154 [2019-12-07 15:44:02,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 15:44:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-12-07 15:44:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-12-07 15:44:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-12-07 15:44:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-12-07 15:44:02,502 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-12-07 15:44:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:02,502 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-12-07 15:44:02,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:44:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-12-07 15:44:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:02,503 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:02,504 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:02,504 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:02,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-12-07 15:44:02,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:02,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726034397] [2019-12-07 15:44:02,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:02,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726034397] [2019-12-07 15:44:02,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:02,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-12-07 15:44:02,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106104563] [2019-12-07 15:44:02,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 15:44:02,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:02,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 15:44:02,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:44:02,688 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-12-07 15:44:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:03,375 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-12-07 15:44:03,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 15:44:03,376 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-12-07 15:44:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:03,377 INFO L225 Difference]: With dead ends: 225 [2019-12-07 15:44:03,377 INFO L226 Difference]: Without dead ends: 221 [2019-12-07 15:44:03,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 15:44:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-12-07 15:44:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-12-07 15:44:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-12-07 15:44:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-12-07 15:44:03,387 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-12-07 15:44:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:03,387 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-12-07 15:44:03,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 15:44:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-12-07 15:44:03,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:03,388 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:03,388 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:03,389 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:03,389 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-12-07 15:44:03,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:03,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966143736] [2019-12-07 15:44:03,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:03,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966143736] [2019-12-07 15:44:03,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:03,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 15:44:03,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432712136] [2019-12-07 15:44:03,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:44:03,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:03,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:44:03,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:44:03,465 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-12-07 15:44:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:03,587 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-12-07 15:44:03,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:44:03,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-12-07 15:44:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:03,589 INFO L225 Difference]: With dead ends: 171 [2019-12-07 15:44:03,589 INFO L226 Difference]: Without dead ends: 146 [2019-12-07 15:44:03,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:44:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-12-07 15:44:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-12-07 15:44:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-12-07 15:44:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-12-07 15:44:03,597 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-12-07 15:44:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:03,597 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-12-07 15:44:03,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:44:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-12-07 15:44:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:03,598 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:03,598 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:03,598 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:03,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:03,598 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-12-07 15:44:03,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:03,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336747150] [2019-12-07 15:44:03,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:03,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336747150] [2019-12-07 15:44:03,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:03,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 15:44:03,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324581981] [2019-12-07 15:44:03,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:44:03,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:03,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:44:03,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:44:03,696 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-12-07 15:44:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:03,829 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-12-07 15:44:03,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:44:03,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-12-07 15:44:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:03,830 INFO L225 Difference]: With dead ends: 157 [2019-12-07 15:44:03,830 INFO L226 Difference]: Without dead ends: 132 [2019-12-07 15:44:03,831 INFO L630 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 [2019-12-07 15:44:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-12-07 15:44:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-12-07 15:44:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-12-07 15:44:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-12-07 15:44:03,840 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-12-07 15:44:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:03,840 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-12-07 15:44:03,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:44:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-12-07 15:44:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:03,841 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:03,841 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:03,842 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-12-07 15:44:03,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:03,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134693978] [2019-12-07 15:44:03,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:03,906 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:44:03,906 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:44:03,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:44:03 BoogieIcfgContainer [2019-12-07 15:44:03,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:44:03,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:44:03,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:44:03,929 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:44:03,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:01" (3/4) ... [2019-12-07 15:44:03,932 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:44:03,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:44:03,933 INFO L168 Benchmark]: Toolchain (without parser) took 2920.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.5 MB in the beginning and 857.5 MB in the end (delta: 86.1 MB). Peak memory consumption was 184.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:03,934 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:03,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:03,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:03,935 INFO L168 Benchmark]: Boogie Preprocessor took 21.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:03,935 INFO L168 Benchmark]: RCFGBuilder took 288.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:03,936 INFO L168 Benchmark]: TraceAbstraction took 2351.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 857.5 MB in the end (delta: 196.3 MB). Peak memory consumption was 196.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:03,936 INFO L168 Benchmark]: Witness Printer took 3.07 ms. Allocated memory is still 1.1 GB. Free memory is still 857.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:03,939 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 288.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2351.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 857.5 MB in the end (delta: 196.3 MB). Peak memory consumption was 196.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.07 ms. Allocated memory is still 1.1 GB. Free memory is still 857.5 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: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.0s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s 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 0.1.25-f470102 [2019-12-07 15:44:05,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:44:05,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:44:05,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:44:05,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:44:05,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:44:05,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:44:05,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:44:05,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:44:05,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:44:05,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:44:05,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:44:05,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:44:05,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:44:05,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:44:05,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:44:05,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:44:05,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:44:05,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:44:05,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:44:05,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:44:05,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:44:05,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:44:05,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:44:05,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:44:05,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:44:05,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:44:05,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:44:05,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:44:05,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:44:05,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:44:05,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:44:05,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:44:05,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:44:05,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:44:05,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:44:05,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:44:05,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:44:05,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:44:05,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:44:05,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:44:05,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 15:44:05,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:44:05,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:44:05,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:44:05,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:44:05,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:44:05,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:44:05,443 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:44:05,443 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:44:05,443 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:44:05,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:44:05,443 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:44:05,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:44:05,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:44:05,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:44:05,444 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 15:44:05,445 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:44:05,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:44:05,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:44:05,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:44:05,445 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_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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 [2019-12-07 15:44:05,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:44:05,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:44:05,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:44:05,623 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:44:05,623 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:44:05,624 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 15:44:05,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/d53d540ca/33a618d59a8d4718a260f7eed9bd9f52/FLAGf949b13a2 [2019-12-07 15:44:06,106 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:44:06,106 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-12-07 15:44:06,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/d53d540ca/33a618d59a8d4718a260f7eed9bd9f52/FLAGf949b13a2 [2019-12-07 15:44:06,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/data/d53d540ca/33a618d59a8d4718a260f7eed9bd9f52 [2019-12-07 15:44:06,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:44:06,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:44:06,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:06,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:44:06,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:44:06,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc928b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06, skipping insertion in model container [2019-12-07 15:44:06,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:44:06,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:44:06,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:06,284 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:44:06,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:06,350 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:44:06,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06 WrapperNode [2019-12-07 15:44:06,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:06,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:06,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:44:06,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:44:06,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:06,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:44:06,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:44:06,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:44:06,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... [2019-12-07 15:44:06,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:44:06,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:44:06,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:44:06,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:44:06,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/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 [2019-12-07 15:44:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:44:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:44:06,742 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:44:06,743 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-12-07 15:44:06,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:06 BoogieIcfgContainer [2019-12-07 15:44:06,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:44:06,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:44:06,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:44:06,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:44:06,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:44:06" (1/3) ... [2019-12-07 15:44:06,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f569dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:06, skipping insertion in model container [2019-12-07 15:44:06,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:06" (2/3) ... [2019-12-07 15:44:06,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f569dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:06, skipping insertion in model container [2019-12-07 15:44:06,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:06" (3/3) ... [2019-12-07 15:44:06,748 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-12-07 15:44:06,754 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:44:06,759 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-12-07 15:44:06,766 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-07 15:44:06,782 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:44:06,782 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:44:06,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:44:06,782 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:44:06,782 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:44:06,782 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:44:06,782 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:44:06,782 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:44:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-12-07 15:44:06,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:44:06,798 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:06,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:06,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-12-07 15:44:06,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:06,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329643218] [2019-12-07 15:44:06,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:06,857 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:44:06,861 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:06,895 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:06,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329643218] [2019-12-07 15:44:06,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:06,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 15:44:06,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818696747] [2019-12-07 15:44:06,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:44:06,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:06,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:44:06,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:44:06,929 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 5 states. [2019-12-07 15:44:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:07,037 INFO L93 Difference]: Finished difference Result 230 states and 332 transitions. [2019-12-07 15:44:07,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:44:07,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 15:44:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:07,049 INFO L225 Difference]: With dead ends: 230 [2019-12-07 15:44:07,049 INFO L226 Difference]: Without dead ends: 138 [2019-12-07 15:44:07,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:44:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-12-07 15:44:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2019-12-07 15:44:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-12-07 15:44:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2019-12-07 15:44:07,085 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 14 [2019-12-07 15:44:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:07,085 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2019-12-07 15:44:07,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:44:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2019-12-07 15:44:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:44:07,086 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:07,086 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:07,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:44:07,287 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1540311893, now seen corresponding path program 1 times [2019-12-07 15:44:07,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:07,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872990467] [2019-12-07 15:44:07,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:07,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:44:07,373 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:07,397 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:07,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872990467] [2019-12-07 15:44:07,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:07,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-12-07 15:44:07,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347958525] [2019-12-07 15:44:07,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:44:07,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:07,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:44:07,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:44:07,411 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand 6 states. [2019-12-07 15:44:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:07,566 INFO L93 Difference]: Finished difference Result 225 states and 284 transitions. [2019-12-07 15:44:07,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 15:44:07,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-12-07 15:44:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:07,569 INFO L225 Difference]: With dead ends: 225 [2019-12-07 15:44:07,569 INFO L226 Difference]: Without dead ends: 199 [2019-12-07 15:44:07,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:44:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-12-07 15:44:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 118. [2019-12-07 15:44:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-12-07 15:44:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 161 transitions. [2019-12-07 15:44:07,588 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 161 transitions. Word has length 18 [2019-12-07 15:44:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:07,588 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 161 transitions. [2019-12-07 15:44:07,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:44:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 161 transitions. [2019-12-07 15:44:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:44:07,589 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:07,590 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:07,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:44:07,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:07,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1417428804, now seen corresponding path program 1 times [2019-12-07 15:44:07,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:07,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876876011] [2019-12-07 15:44:07,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:07,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:44:07,821 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:07,848 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:07,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876876011] [2019-12-07 15:44:07,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:07,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 15:44:07,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80289110] [2019-12-07 15:44:07,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:44:07,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:07,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:44:07,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:44:07,853 INFO L87 Difference]: Start difference. First operand 118 states and 161 transitions. Second operand 7 states. [2019-12-07 15:44:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:08,033 INFO L93 Difference]: Finished difference Result 213 states and 265 transitions. [2019-12-07 15:44:08,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 15:44:08,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-12-07 15:44:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:08,035 INFO L225 Difference]: With dead ends: 213 [2019-12-07 15:44:08,035 INFO L226 Difference]: Without dead ends: 184 [2019-12-07 15:44:08,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-12-07 15:44:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-12-07 15:44:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-12-07 15:44:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-12-07 15:44:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-12-07 15:44:08,047 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 18 [2019-12-07 15:44:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:08,048 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-12-07 15:44:08,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:44:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-12-07 15:44:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:08,049 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:08,049 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:08,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:44:08,250 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:08,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-12-07 15:44:08,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:08,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49225162] [2019-12-07 15:44:08,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:08,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:44:08,317 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:08,397 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:08,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49225162] [2019-12-07 15:44:08,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:08,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-12-07 15:44:08,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574727411] [2019-12-07 15:44:08,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:44:08,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:44:08,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:44:08,416 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-12-07 15:44:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:08,612 INFO L93 Difference]: Finished difference Result 182 states and 229 transitions. [2019-12-07 15:44:08,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:44:08,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-12-07 15:44:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:08,615 INFO L225 Difference]: With dead ends: 182 [2019-12-07 15:44:08,615 INFO L226 Difference]: Without dead ends: 178 [2019-12-07 15:44:08,615 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:44:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-12-07 15:44:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 124. [2019-12-07 15:44:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-12-07 15:44:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2019-12-07 15:44:08,626 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 22 [2019-12-07 15:44:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:08,626 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2019-12-07 15:44:08,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:44:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2019-12-07 15:44:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:08,628 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:08,628 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:08,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:44:08,829 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:08,830 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-12-07 15:44:08,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:08,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910254891] [2019-12-07 15:44:08,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:08,891 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:44:08,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:08,929 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:08,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910254891] [2019-12-07 15:44:08,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:08,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 15:44:08,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040613296] [2019-12-07 15:44:08,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:44:08,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:44:08,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:44:08,935 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 7 states. [2019-12-07 15:44:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:09,118 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2019-12-07 15:44:09,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:44:09,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-12-07 15:44:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:09,120 INFO L225 Difference]: With dead ends: 181 [2019-12-07 15:44:09,120 INFO L226 Difference]: Without dead ends: 148 [2019-12-07 15:44:09,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-12-07 15:44:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-12-07 15:44:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 118. [2019-12-07 15:44:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-12-07 15:44:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2019-12-07 15:44:09,130 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 155 transitions. Word has length 22 [2019-12-07 15:44:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:09,130 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 155 transitions. [2019-12-07 15:44:09,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:44:09,131 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 155 transitions. [2019-12-07 15:44:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:09,132 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:09,132 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:09,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 15:44:09,333 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:09,334 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-12-07 15:44:09,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:09,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923192974] [2019-12-07 15:44:09,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:09,395 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:44:09,397 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:09,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:44:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:09,427 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:09,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923192974] [2019-12-07 15:44:09,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:09,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:44:09,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925179768] [2019-12-07 15:44:09,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:44:09,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:09,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:44:09,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:44:09,459 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. Second operand 6 states. [2019-12-07 15:44:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:09,682 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2019-12-07 15:44:09,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:44:09,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-12-07 15:44:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:09,683 INFO L225 Difference]: With dead ends: 182 [2019-12-07 15:44:09,683 INFO L226 Difference]: Without dead ends: 178 [2019-12-07 15:44:09,684 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:44:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-12-07 15:44:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2019-12-07 15:44:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-12-07 15:44:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 151 transitions. [2019-12-07 15:44:09,690 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 151 transitions. Word has length 22 [2019-12-07 15:44:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:09,690 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 151 transitions. [2019-12-07 15:44:09,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:44:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 151 transitions. [2019-12-07 15:44:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:44:09,691 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:09,691 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:09,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 15:44:09,892 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-12-07 15:44:09,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:09,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622743852] [2019-12-07 15:44:09,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:09,961 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:44:09,963 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:10,000 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:10,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622743852] [2019-12-07 15:44:10,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:10,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-12-07 15:44:10,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948499555] [2019-12-07 15:44:10,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:44:10,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:10,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:44:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:44:10,016 INFO L87 Difference]: Start difference. First operand 114 states and 151 transitions. Second operand 9 states. [2019-12-07 15:44:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:10,211 INFO L93 Difference]: Finished difference Result 164 states and 203 transitions. [2019-12-07 15:44:10,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 15:44:10,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-12-07 15:44:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:10,212 INFO L225 Difference]: With dead ends: 164 [2019-12-07 15:44:10,212 INFO L226 Difference]: Without dead ends: 159 [2019-12-07 15:44:10,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-12-07 15:44:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-12-07 15:44:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2019-12-07 15:44:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-12-07 15:44:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2019-12-07 15:44:10,219 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 24 [2019-12-07 15:44:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:10,219 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2019-12-07 15:44:10,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:44:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2019-12-07 15:44:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:44:10,220 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:10,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:10,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 15:44:10,421 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-12-07 15:44:10,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:10,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352876012] [2019-12-07 15:44:10,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:10,475 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:44:10,477 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:10,491 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:10,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352876012] [2019-12-07 15:44:10,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:10,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-12-07 15:44:10,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320631301] [2019-12-07 15:44:10,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:44:10,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:44:10,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:44:10,500 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand 6 states. [2019-12-07 15:44:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:10,572 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2019-12-07 15:44:10,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:44:10,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-12-07 15:44:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:10,573 INFO L225 Difference]: With dead ends: 144 [2019-12-07 15:44:10,574 INFO L226 Difference]: Without dead ends: 125 [2019-12-07 15:44:10,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:44:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-12-07 15:44:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2019-12-07 15:44:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-12-07 15:44:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2019-12-07 15:44:10,580 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 24 [2019-12-07 15:44:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:10,580 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2019-12-07 15:44:10,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:44:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2019-12-07 15:44:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:44:10,581 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:10,581 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:10,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 15:44:10,782 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:10,783 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-12-07 15:44:10,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:10,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089323003] [2019-12-07 15:44:10,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 15:44:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:10,896 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 15:44:10,896 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:44:11,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 15:44:11,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:44:11 BoogieIcfgContainer [2019-12-07 15:44:11,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:44:11,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:44:11,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:44:11,135 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:44:11,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:06" (3/4) ... [2019-12-07 15:44:11,137 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:44:11,177 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2e8ed5a8-fc71-48f8-aaad-17fa2e2c83a2/bin/uautomizer/witness.graphml [2019-12-07 15:44:11,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:44:11,179 INFO L168 Benchmark]: Toolchain (without parser) took 5056.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -123.8 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:11,179 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:11,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:11,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:11,180 INFO L168 Benchmark]: Boogie Preprocessor took 26.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:11,180 INFO L168 Benchmark]: RCFGBuilder took 334.66 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: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:11,180 INFO L168 Benchmark]: TraceAbstraction took 4389.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -1.8 MB). Peak memory consumption was 78.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:11,181 INFO L168 Benchmark]: Witness Printer took 43.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:11,182 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -156.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.93 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 26.32 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 334.66 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: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4389.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -1.8 MB). Peak memory consumption was 78.4 MB. Max. memory is 11.5 GB. * Witness Printer took 43.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 852 SDtfs, 1261 SDslu, 3672 SDs, 0 SdLazy, 632 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 401 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 11560 SizeOfPredicates, 49 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...