./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/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_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/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_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/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_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa5701cbf2aecb18d72b6e5744b88307065d31ab ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 03:43:55,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:43:55,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:43:55,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:43:55,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:43:55,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:43:55,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:43:55,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:43:55,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:43:55,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:43:55,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:43:55,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:43:55,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:43:55,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:43:55,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:43:55,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:43:55,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:43:55,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:43:55,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:43:55,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:43:55,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:43:55,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:43:55,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:43:55,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:43:55,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:43:55,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:43:55,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:43:55,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:43:55,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:43:55,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:43:55,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:43:55,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:43:55,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:43:55,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:43:55,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:43:55,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:43:55,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:43:55,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:43:55,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:43:55,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:43:55,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:43:55,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 03:43:55,597 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:43:55,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:43:55,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:43:55,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:43:55,599 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:43:55,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:43:55,599 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:43:55,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:43:55,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:43:55,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:43:55,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 03:43:55,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:43:55,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 03:43:55,601 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:43:55,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:43:55,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:43:55,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 03:43:55,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:43:55,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:43:55,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:43:55,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:43:55,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:43:55,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:43:55,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:43:55,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 03:43:55,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:43:55,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 03:43:55,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 03:43:55,607 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_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-20 03:43:55,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:43:55,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:43:55,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:43:55,781 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:43:55,781 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:43:55,782 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-20 03:43:55,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/5a8573fb1/7732cb63b41649bbb49e35bab178c068/FLAGf996ac3c1 [2019-11-20 03:43:56,255 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:43:56,257 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-20 03:43:56,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/5a8573fb1/7732cb63b41649bbb49e35bab178c068/FLAGf996ac3c1 [2019-11-20 03:43:56,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/5a8573fb1/7732cb63b41649bbb49e35bab178c068 [2019-11-20 03:43:56,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:43:56,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:43:56,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:43:56,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:43:56,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:43:56,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5d217d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56, skipping insertion in model container [2019-11-20 03:43:56,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,300 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:43:56,340 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:43:56,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:43:56,613 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:43:56,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:43:56,660 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:43:56,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56 WrapperNode [2019-11-20 03:43:56,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:43:56,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:43:56,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:43:56,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:43:56,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:43:56,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:43:56,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:43:56,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:43:56,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... [2019-11-20 03:43:56,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:43:56,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:43:56,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:43:56,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:43:56,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:43:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:43:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:43:57,247 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:43:57,247 INFO L285 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-20 03:43:57,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:43:57 BoogieIcfgContainer [2019-11-20 03:43:57,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:43:57,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:43:57,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:43:57,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:43:57,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:43:56" (1/3) ... [2019-11-20 03:43:57,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148059b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:43:57, skipping insertion in model container [2019-11-20 03:43:57,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:43:56" (2/3) ... [2019-11-20 03:43:57,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148059b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:43:57, skipping insertion in model container [2019-11-20 03:43:57,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:43:57" (3/3) ... [2019-11-20 03:43:57,259 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-20 03:43:57,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:43:57,274 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-20 03:43:57,284 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-20 03:43:57,321 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:43:57,321 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 03:43:57,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:43:57,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:43:57,322 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:43:57,322 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:43:57,322 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:43:57,322 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:43:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-20 03:43:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 03:43:57,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:43:57,351 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:43:57,352 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]=== [2019-11-20 03:43:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:43:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-20 03:43:57,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:43:57,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017200881] [2019-11-20 03:43:57,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:43:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:43:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:43:57,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017200881] [2019-11-20 03:43:57,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:43:57,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 03:43:57,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612594233] [2019-11-20 03:43:57,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 03:43:57,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:43:57,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:43:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:43:57,694 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-11-20 03:43:58,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:43:58,198 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-11-20 03:43:58,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 03:43:58,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-20 03:43:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:43:58,215 INFO L225 Difference]: With dead ends: 269 [2019-11-20 03:43:58,216 INFO L226 Difference]: Without dead ends: 170 [2019-11-20 03:43:58,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-11-20 03:43:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-20 03:43:58,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-11-20 03:43:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-20 03:43:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-11-20 03:43:58,297 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-11-20 03:43:58,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:43:58,298 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-11-20 03:43:58,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 03:43:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-11-20 03:43:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 03:43:58,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:43:58,301 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:43:58,302 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]=== [2019-11-20 03:43:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:43:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-11-20 03:43:58,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:43:58,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843848420] [2019-11-20 03:43:58,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:43:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:43:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:43:58,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843848420] [2019-11-20 03:43:58,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:43:58,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 03:43:58,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935489604] [2019-11-20 03:43:58,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 03:43:58,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:43:58,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:43:58,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:43:58,514 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-11-20 03:43:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:43:58,828 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-11-20 03:43:58,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 03:43:58,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-20 03:43:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:43:58,832 INFO L225 Difference]: With dead ends: 183 [2019-11-20 03:43:58,832 INFO L226 Difference]: Without dead ends: 154 [2019-11-20 03:43:58,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-20 03:43:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-20 03:43:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-11-20 03:43:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-20 03:43:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-11-20 03:43:58,851 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-11-20 03:43:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:43:58,851 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-11-20 03:43:58,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 03:43:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-11-20 03:43:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:43:58,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:43:58,854 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] [2019-11-20 03:43:58,855 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]=== [2019-11-20 03:43:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:43:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-20 03:43:58,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:43:58,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883102336] [2019-11-20 03:43:58,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:43:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:43:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:43:59,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883102336] [2019-11-20 03:43:59,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:43:59,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-20 03:43:59,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128407654] [2019-11-20 03:43:59,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 03:43:59,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:43:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 03:43:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-20 03:43:59,215 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-11-20 03:44:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:00,366 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-11-20 03:44:00,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-20 03:44:00,367 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-11-20 03:44:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:00,369 INFO L225 Difference]: With dead ends: 225 [2019-11-20 03:44:00,369 INFO L226 Difference]: Without dead ends: 221 [2019-11-20 03:44:00,370 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 03:44:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-11-20 03:44:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-11-20 03:44:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-20 03:44:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-11-20 03:44:00,382 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-11-20 03:44:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:00,383 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-11-20 03:44:00,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 03:44:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-11-20 03:44:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:44:00,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:00,384 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] [2019-11-20 03:44:00,385 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]=== [2019-11-20 03:44:00,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-11-20 03:44:00,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:44:00,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097638153] [2019-11-20 03:44:00,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:44:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:00,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097638153] [2019-11-20 03:44:00,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:00,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 03:44:00,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888146820] [2019-11-20 03:44:00,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 03:44:00,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:44:00,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:44:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:44:00,513 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-11-20 03:44:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:00,725 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-11-20 03:44:00,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 03:44:00,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-20 03:44:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:00,727 INFO L225 Difference]: With dead ends: 171 [2019-11-20 03:44:00,727 INFO L226 Difference]: Without dead ends: 146 [2019-11-20 03:44:00,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-20 03:44:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-20 03:44:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-11-20 03:44:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-20 03:44:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-20 03:44:00,748 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-20 03:44:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:00,749 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-20 03:44:00,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 03:44:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-20 03:44:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:44:00,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:00,751 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] [2019-11-20 03:44:00,751 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]=== [2019-11-20 03:44:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-11-20 03:44:00,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:44:00,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109869727] [2019-11-20 03:44:00,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:44:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:00,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109869727] [2019-11-20 03:44:00,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:00,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 03:44:00,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116760867] [2019-11-20 03:44:00,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 03:44:00,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:44:00,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:44:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:44:00,902 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-11-20 03:44:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:01,073 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-11-20 03:44:01,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 03:44:01,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-20 03:44:01,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:01,075 INFO L225 Difference]: With dead ends: 157 [2019-11-20 03:44:01,075 INFO L226 Difference]: Without dead ends: 132 [2019-11-20 03:44:01,076 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 [2019-11-20 03:44:01,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-20 03:44:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-11-20 03:44:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-20 03:44:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-20 03:44:01,093 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-20 03:44:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:01,093 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-20 03:44:01,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 03:44:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-20 03:44:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:44:01,099 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:01,099 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] [2019-11-20 03:44:01,099 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]=== [2019-11-20 03:44:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:01,100 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-20 03:44:01,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:44:01,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666807856] [2019-11-20 03:44:01,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:44:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:44:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:44:01,176 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:44:01,177 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:44:01,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:44:01 BoogieIcfgContainer [2019-11-20 03:44:01,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:44:01,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:44:01,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:44:01,201 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:44:01,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:43:57" (3/4) ... [2019-11-20 03:44:01,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 03:44:01,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:44:01,207 INFO L168 Benchmark]: Toolchain (without parser) took 4921.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -89.8 MB). Peak memory consumption was 108.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:01,207 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:44:01,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:01,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.50 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: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:01,209 INFO L168 Benchmark]: Boogie Preprocessor took 31.01 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. [2019-11-20 03:44:01,209 INFO L168 Benchmark]: RCFGBuilder took 509.94 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:01,210 INFO L168 Benchmark]: TraceAbstraction took 3950.00 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.2 MB). Peak memory consumption was 105.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:01,210 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:44:01,213 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 374.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.50 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: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.01 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 509.94 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3950.00 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.2 MB). Peak memory consumption was 105.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 8117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 03:44:02,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:44:02,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:44:02,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:44:02,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:44:02,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:44:02,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:44:02,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:44:02,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:44:02,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:44:02,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:44:02,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:44:02,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:44:02,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:44:02,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:44:02,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:44:02,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:44:02,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:44:03,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:44:03,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:44:03,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:44:03,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:44:03,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:44:03,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:44:03,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:44:03,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:44:03,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:44:03,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:44:03,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:44:03,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:44:03,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:44:03,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:44:03,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:44:03,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:44:03,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:44:03,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:44:03,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:44:03,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:44:03,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:44:03,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:44:03,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:44:03,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 03:44:03,052 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:44:03,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:44:03,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:44:03,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:44:03,063 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:44:03,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:44:03,064 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:44:03,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:44:03,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:44:03,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 03:44:03,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:44:03,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 03:44:03,065 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 03:44:03,065 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 03:44:03,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:44:03,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:44:03,066 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:44:03,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 03:44:03,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:44:03,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:44:03,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:44:03,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:44:03,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:44:03,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:44:03,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:44:03,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 03:44:03,069 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 03:44:03,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 03:44:03,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 03:44:03,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 03:44:03,070 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_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-20 03:44:03,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:44:03,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:44:03,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:44:03,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:44:03,412 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:44:03,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-20 03:44:03,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/9c0e3d305/d0be2fe59093498399ccda723e4bfb95/FLAGf974ba908 [2019-11-20 03:44:03,887 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:44:03,888 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-20 03:44:03,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/9c0e3d305/d0be2fe59093498399ccda723e4bfb95/FLAGf974ba908 [2019-11-20 03:44:03,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/data/9c0e3d305/d0be2fe59093498399ccda723e4bfb95 [2019-11-20 03:44:03,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:44:03,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:44:03,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:44:03,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:44:03,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:44:03,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:44:03" (1/1) ... [2019-11-20 03:44:03,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7314b705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:03, skipping insertion in model container [2019-11-20 03:44:03,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:44:03" (1/1) ... [2019-11-20 03:44:03,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:44:03,947 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:44:04,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:44:04,172 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:44:04,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:44:04,304 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:44:04,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04 WrapperNode [2019-11-20 03:44:04,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:44:04,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:44:04,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:44:04,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:44:04,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:44:04,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:44:04,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:44:04,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:44:04,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... [2019-11-20 03:44:04,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:44:04,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:44:04,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:44:04,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:44:04,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:44:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:44:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:44:04,973 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:44:04,973 INFO L285 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-20 03:44:04,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:44:04 BoogieIcfgContainer [2019-11-20 03:44:04,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:44:04,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:44:04,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:44:04,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:44:04,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:44:03" (1/3) ... [2019-11-20 03:44:04,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585730ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:44:04, skipping insertion in model container [2019-11-20 03:44:04,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:44:04" (2/3) ... [2019-11-20 03:44:04,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585730ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:44:04, skipping insertion in model container [2019-11-20 03:44:04,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:44:04" (3/3) ... [2019-11-20 03:44:04,981 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-20 03:44:04,989 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:44:04,995 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-20 03:44:05,005 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-20 03:44:05,024 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:44:05,024 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 03:44:05,025 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:44:05,025 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:44:05,025 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:44:05,025 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:44:05,025 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:44:05,025 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:44:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-20 03:44:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 03:44:05,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:05,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:44:05,045 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]=== [2019-11-20 03:44:05,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:05,050 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-20 03:44:05,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:44:05,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2030265991] [2019-11-20 03:44:05,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:05,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 03:44:05,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:44:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:05,218 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:44:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:05,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2030265991] [2019-11-20 03:44:05,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:05,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-20 03:44:05,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919881419] [2019-11-20 03:44:05,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 03:44:05,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:44:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 03:44:05,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 03:44:05,267 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 7 states. [2019-11-20 03:44:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:05,695 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2019-11-20 03:44:05,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 03:44:05,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-20 03:44:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:05,715 INFO L225 Difference]: With dead ends: 284 [2019-11-20 03:44:05,716 INFO L226 Difference]: Without dead ends: 184 [2019-11-20 03:44:05,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-20 03:44:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-20 03:44:05,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-11-20 03:44:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-20 03:44:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-11-20 03:44:05,799 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 14 [2019-11-20 03:44:05,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:05,800 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-11-20 03:44:05,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 03:44:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-11-20 03:44:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:44:05,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:05,802 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] [2019-11-20 03:44:06,004 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:06,005 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]=== [2019-11-20 03:44:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-20 03:44:06,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:44:06,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1171076358] [2019-11-20 03:44:06,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:06,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:44:06,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:44:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:06,138 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:44:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:06,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1171076358] [2019-11-20 03:44:06,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:06,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-11-20 03:44:06,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464412160] [2019-11-20 03:44:06,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 03:44:06,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:44:06,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 03:44:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-20 03:44:06,209 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-11-20 03:44:06,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:06,568 INFO L93 Difference]: Finished difference Result 190 states and 240 transitions. [2019-11-20 03:44:06,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 03:44:06,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-11-20 03:44:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:06,572 INFO L225 Difference]: With dead ends: 190 [2019-11-20 03:44:06,572 INFO L226 Difference]: Without dead ends: 165 [2019-11-20 03:44:06,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-11-20 03:44:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-11-20 03:44:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2019-11-20 03:44:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-20 03:44:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2019-11-20 03:44:06,601 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 22 [2019-11-20 03:44:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:06,602 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2019-11-20 03:44:06,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 03:44:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2019-11-20 03:44:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 03:44:06,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:06,605 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] [2019-11-20 03:44:06,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:06,807 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]=== [2019-11-20 03:44:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-20 03:44:06,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:44:06,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [430092764] [2019-11-20 03:44:06,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:06,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:44:06,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:44:06,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 03:44:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:06,929 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:44:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:06,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430092764] [2019-11-20 03:44:06,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:06,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 03:44:06,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125721106] [2019-11-20 03:44:06,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:44:06,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:44:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:44:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:44:06,974 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand 6 states. [2019-11-20 03:44:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:07,234 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2019-11-20 03:44:07,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 03:44:07,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-20 03:44:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:07,238 INFO L225 Difference]: With dead ends: 177 [2019-11-20 03:44:07,238 INFO L226 Difference]: Without dead ends: 173 [2019-11-20 03:44:07,239 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 [2019-11-20 03:44:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-20 03:44:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2019-11-20 03:44:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-20 03:44:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2019-11-20 03:44:07,260 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 22 [2019-11-20 03:44:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:07,260 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2019-11-20 03:44:07,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:44:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2019-11-20 03:44:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 03:44:07,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:07,268 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] [2019-11-20 03:44:07,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:07,474 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]=== [2019-11-20 03:44:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-11-20 03:44:07,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:44:07,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1355549551] [2019-11-20 03:44:07,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:07,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:44:07,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:44:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:07,607 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:44:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:07,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1355549551] [2019-11-20 03:44:07,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:07,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-11-20 03:44:07,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190525900] [2019-11-20 03:44:07,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 03:44:07,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:44:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 03:44:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-20 03:44:07,632 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand 9 states. [2019-11-20 03:44:07,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:07,952 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2019-11-20 03:44:07,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 03:44:07,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-20 03:44:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:07,954 INFO L225 Difference]: With dead ends: 173 [2019-11-20 03:44:07,954 INFO L226 Difference]: Without dead ends: 168 [2019-11-20 03:44:07,954 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-11-20 03:44:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-11-20 03:44:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 120. [2019-11-20 03:44:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-20 03:44:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2019-11-20 03:44:07,966 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 24 [2019-11-20 03:44:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:07,966 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2019-11-20 03:44:07,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 03:44:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2019-11-20 03:44:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 03:44:07,967 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:07,968 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] [2019-11-20 03:44:08,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:08,170 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]=== [2019-11-20 03:44:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:08,170 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-11-20 03:44:08,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:44:08,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1417023688] [2019-11-20 03:44:08,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:44:08,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 03:44:08,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:44:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:08,272 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:44:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:44:08,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1417023688] [2019-11-20 03:44:08,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:44:08,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-11-20 03:44:08,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569508938] [2019-11-20 03:44:08,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:44:08,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:44:08,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:44:08,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:44:08,288 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand 6 states. [2019-11-20 03:44:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:44:08,426 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2019-11-20 03:44:08,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 03:44:08,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-20 03:44:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:44:08,428 INFO L225 Difference]: With dead ends: 137 [2019-11-20 03:44:08,428 INFO L226 Difference]: Without dead ends: 118 [2019-11-20 03:44:08,429 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 [2019-11-20 03:44:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-20 03:44:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-11-20 03:44:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-20 03:44:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2019-11-20 03:44:08,444 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 24 [2019-11-20 03:44:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:44:08,444 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2019-11-20 03:44:08,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:44:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2019-11-20 03:44:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 03:44:08,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:44:08,445 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] [2019-11-20 03:44:08,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:08,650 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]=== [2019-11-20 03:44:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:44:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-11-20 03:44:08,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:44:08,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1792342813] [2019-11-20 03:44:08,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:44:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:44:08,824 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 03:44:08,824 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:44:09,026 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:44:09,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:44:09 BoogieIcfgContainer [2019-11-20 03:44:09,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:44:09,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:44:09,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:44:09,050 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:44:09,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:44:04" (3/4) ... [2019-11-20 03:44:09,052 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 03:44:09,122 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7aa4087a-0a4e-4244-be29-62b28ca87436/bin/uautomizer/witness.graphml [2019-11-20 03:44:09,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:44:09,124 INFO L168 Benchmark]: Toolchain (without parser) took 5217.16 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 230.2 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -241.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:44:09,124 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:44:09,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -212.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:09,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:09,125 INFO L168 Benchmark]: Boogie Preprocessor took 47.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:44:09,126 INFO L168 Benchmark]: RCFGBuilder took 559.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:09,126 INFO L168 Benchmark]: TraceAbstraction took 4074.33 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:44:09,127 INFO L168 Benchmark]: Witness Printer took 72.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:44:09,129 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 398.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -212.3 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 559.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4074.33 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 72.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 555 SDtfs, 756 SDslu, 2473 SDs, 0 SdLazy, 427 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 239 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 7672 SizeOfPredicates, 35 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...