./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e626768732b278bbbbc5302dd7dcabf3292bc .......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e626768732b278bbbbc5302dd7dcabf3292bc .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-30 01:12:53,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:53,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:12:53,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:12:53,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:12:53,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:12:53,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:12:53,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:12:53,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:12:53,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:12:53,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:12:53,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:12:53,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:12:53,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:12:53,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:12:53,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:12:53,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:12:53,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:12:53,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:12:53,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:12:53,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:12:53,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:12:53,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:12:53,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:12:53,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:12:53,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:12:53,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:12:53,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:12:53,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:12:53,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:12:53,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:12:53,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:12:53,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:12:53,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:12:53,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:12:53,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:12:53,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:12:53,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:12:53,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:12:53,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:12:53,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:12:53,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:12:54,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:12:54,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:12:54,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:12:54,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:12:54,017 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:12:54,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:12:54,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:12:54,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:12:54,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:12:54,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:12:54,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:12:54,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:12:54,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:12:54,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:12:54,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:12:54,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:12:54,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:12:54,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:12:54,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:12:54,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:12:54,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:12:54,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:12:54,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:12:54,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:12:54,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:12:54,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:12:54,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:12:54,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:12:54,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:12:54,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e626768732b278bbbbc5302dd7dcabf3292bc [2020-11-30 01:12:54,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:12:54,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:12:54,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:12:54,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:12:54,412 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:12:54,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-11-30 01:12:54,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/97b6b568a/5b3a494248d04ff49e507c40bc09184f/FLAGbc384da43 [2020-11-30 01:12:54,987 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:12:54,988 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-11-30 01:12:55,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/97b6b568a/5b3a494248d04ff49e507c40bc09184f/FLAGbc384da43 [2020-11-30 01:12:55,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/97b6b568a/5b3a494248d04ff49e507c40bc09184f [2020-11-30 01:12:55,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:12:55,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:12:55,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:55,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:12:55,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:12:55,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1c0b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55, skipping insertion in model container [2020-11-30 01:12:55,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:12:55,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:12:55,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:55,708 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:12:55,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:55,778 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:12:55,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55 WrapperNode [2020-11-30 01:12:55,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:55,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:55,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:12:55,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:12:55,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:55,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:12:55,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:12:55,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:12:55,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:12:55,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:12:55,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:12:55,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:12:55,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/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 [2020-11-30 01:12:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:12:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:12:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:12:55,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:12:56,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:12:56,211 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-30 01:12:56,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:56 BoogieIcfgContainer [2020-11-30 01:12:56,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:12:56,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:12:56,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:12:56,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:12:56,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:12:55" (1/3) ... [2020-11-30 01:12:56,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc17ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:56, skipping insertion in model container [2020-11-30 01:12:56,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (2/3) ... [2020-11-30 01:12:56,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc17ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:56, skipping insertion in model container [2020-11-30 01:12:56,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:56" (3/3) ... [2020-11-30 01:12:56,224 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2020-11-30 01:12:56,241 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:12:56,245 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:12:56,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:12:56,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:12:56,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:12:56,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:12:56,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:12:56,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:12:56,319 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:12:56,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:12:56,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:12:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-30 01:12:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:12:56,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:56,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:12:56,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:12:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-30 01:12:56,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:56,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436623244] [2020-11-30 01:12:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:56,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436623244] [2020-11-30 01:12:56,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:56,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:12:56,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260765143] [2020-11-30 01:12:56,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:12:56,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:56,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:12:56,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:12:56,552 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-30 01:12:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:56,574 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-30 01:12:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:12:56,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-30 01:12:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:56,585 INFO L225 Difference]: With dead ends: 62 [2020-11-30 01:12:56,585 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 01:12:56,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:12:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 01:12:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 01:12:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 01:12:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-30 01:12:56,636 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-30 01:12:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:56,637 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-30 01:12:56,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:12:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-30 01:12:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:12:56,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:56,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:12:56,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:12:56,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:12:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 01:12:56,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:56,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970063549] [2020-11-30 01:12:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:56,673 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:56,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559197618] [2020-11-30 01:12:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:12:56,788 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:12:57,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:12:57,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:12:57 BoogieIcfgContainer [2020-11-30 01:12:57,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:12:57,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:12:57,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:12:57,037 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:12:57,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:56" (3/4) ... [2020-11-30 01:12:57,041 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:12:57,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:12:57,044 INFO L168 Benchmark]: Toolchain (without parser) took 1650.54 ms. Allocated memory is still 109.1 MB. Free memory was 77.9 MB in the beginning and 42.3 MB in the end (delta: 35.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:57,045 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory is still 35.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:57,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.67 ms. Allocated memory is still 109.1 MB. Free memory was 77.7 MB in the beginning and 86.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:57,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.51 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:57,048 INFO L168 Benchmark]: Boogie Preprocessor took 30.61 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.4 MB in the end (delta: 998.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:57,049 INFO L168 Benchmark]: RCFGBuilder took 359.35 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 69.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:57,050 INFO L168 Benchmark]: TraceAbstraction took 819.17 ms. Allocated memory is still 109.1 MB. Free memory was 68.7 MB in the beginning and 42.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:57,050 INFO L168 Benchmark]: Witness Printer took 5.69 ms. Allocated memory is still 109.1 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:57,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory is still 35.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 385.67 ms. Allocated memory is still 109.1 MB. Free memory was 77.7 MB in the beginning and 86.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.51 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.61 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.4 MB in the end (delta: 998.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 359.35 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 69.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 819.17 ms. Allocated memory is still 109.1 MB. Free memory was 68.7 MB in the beginning and 42.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.69 ms. Allocated memory is still 109.1 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire2.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:12:59,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:59,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:13:00,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:13:00,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:13:00,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:13:00,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:13:00,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:13:00,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:13:00,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:13:00,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:13:00,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:13:00,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:13:00,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:13:00,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:13:00,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:13:00,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:13:00,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:13:00,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:13:00,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:13:00,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:13:00,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:13:00,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:13:00,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:13:00,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:13:00,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:13:00,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:13:00,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:13:00,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:13:00,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:13:00,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:13:00,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:13:00,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:13:00,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:13:00,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:13:00,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:13:00,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:13:00,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:13:00,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:13:00,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:13:00,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:13:00,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:13:00,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:13:00,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:13:00,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:13:00,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:13:00,162 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:13:00,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:13:00,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:13:00,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:13:00,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:13:00,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:13:00,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:13:00,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:13:00,164 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:13:00,164 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:13:00,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:13:00,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:13:00,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:13:00,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:13:00,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:13:00,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:13:00,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:13:00,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:13:00,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:13:00,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:13:00,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:13:00,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:13:00,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:13:00,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:13:00,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:13:00,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:13:00,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:13:00,168 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e626768732b278bbbbc5302dd7dcabf3292bc [2020-11-30 01:13:00,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:13:00,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:13:00,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:13:00,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:13:00,608 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:13:00,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-11-30 01:13:00,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/b8f59201d/707b130c03be4bf599cf471be7210dd6/FLAG040f7449a [2020-11-30 01:13:01,329 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:13:01,330 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-11-30 01:13:01,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/b8f59201d/707b130c03be4bf599cf471be7210dd6/FLAG040f7449a [2020-11-30 01:13:01,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/data/b8f59201d/707b130c03be4bf599cf471be7210dd6 [2020-11-30 01:13:01,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:13:01,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:13:01,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:01,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:13:01,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:13:01,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:01" (1/1) ... [2020-11-30 01:13:01,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6437e1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:01, skipping insertion in model container [2020-11-30 01:13:01,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:01" (1/1) ... [2020-11-30 01:13:01,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:13:01,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:13:01,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:01,969 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:13:01,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:02,012 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:13:02,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02 WrapperNode [2020-11-30 01:13:02,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:02,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:02,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:13:02,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:13:02,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:02,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:13:02,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:13:02,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:13:02,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... [2020-11-30 01:13:02,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:13:02,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:13:02,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:13:02,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:13:02,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/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 [2020-11-30 01:13:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:13:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:13:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:13:02,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:13,167 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:13,167 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-30 01:13:13,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:13 BoogieIcfgContainer [2020-11-30 01:13:13,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:13,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:13:13,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:13:13,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:13:13,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:13:01" (1/3) ... [2020-11-30 01:13:13,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70afdddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:13, skipping insertion in model container [2020-11-30 01:13:13,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:02" (2/3) ... [2020-11-30 01:13:13,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70afdddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:13, skipping insertion in model container [2020-11-30 01:13:13,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:13" (3/3) ... [2020-11-30 01:13:13,180 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2020-11-30 01:13:13,193 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:13:13,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:13:13,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:13:13,263 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:13:13,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:13:13,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:13:13,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:13,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:13,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:13:13,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:13,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:13:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-30 01:13:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:13:13,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:13,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:13:13,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-30 01:13:13,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:13,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72639649] [2020-11-30 01:13:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:13:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:13:13,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:13,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:13,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72639649] [2020-11-30 01:13:13,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:13,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:13:13,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341839418] [2020-11-30 01:13:13,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:13:13,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:13,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:13:13,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:13:13,615 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-30 01:13:13,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:13,635 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-30 01:13:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:13:13,637 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-30 01:13:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:13,647 INFO L225 Difference]: With dead ends: 62 [2020-11-30 01:13:13,647 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 01:13:13,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:13:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 01:13:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 01:13:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 01:13:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-30 01:13:13,702 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-30 01:13:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:13,702 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-30 01:13:13,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:13:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-30 01:13:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:13:13,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:13,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:13:13,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:13:13,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 01:13:13,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:13,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739588528] [2020-11-30 01:13:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:13:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:13:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:14,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:18,559 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 01:13:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:18,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739588528] [2020-11-30 01:13:18,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:18,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 01:13:18,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699706322] [2020-11-30 01:13:18,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:13:18,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:18,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:13:18,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:18,600 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-11-30 01:13:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:40,758 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-11-30 01:13:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:13:40,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-11-30 01:13:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:40,762 INFO L225 Difference]: With dead ends: 47 [2020-11-30 01:13:40,762 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 01:13:40,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:13:40,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 01:13:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-11-30 01:13:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 01:13:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-30 01:13:40,773 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-11-30 01:13:40,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:40,773 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-30 01:13:40,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:13:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-30 01:13:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:13:40,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:40,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:40,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:13:40,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:40,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:40,994 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-30 01:13:40,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:40,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331841215] [2020-11-30 01:13:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:13:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:42,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:13:42,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:44,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:46,321 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2020-11-30 01:13:55,326 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-30 01:13:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:55,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331841215] [2020-11-30 01:13:55,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:55,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-30 01:13:55,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416423861] [2020-11-30 01:13:55,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:13:55,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:55,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:13:55,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2020-11-30 01:13:55,331 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2020-11-30 01:14:02,500 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-30 01:14:20,936 WARN L193 SmtUtils]: Spent 7.34 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 01:14:38,462 WARN L193 SmtUtils]: Spent 7.39 s on a formula simplification that was a NOOP. DAG size: 34 [2020-11-30 01:14:47,012 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse0) (not .cse0) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2020-11-30 01:14:49,401 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-11-30 01:15:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:23,821 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-11-30 01:15:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:15:23,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-30 01:15:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:23,846 INFO L225 Difference]: With dead ends: 41 [2020-11-30 01:15:23,846 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 01:15:23,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=48, Invalid=113, Unknown=3, NotChecked=46, Total=210 [2020-11-30 01:15:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 01:15:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-11-30 01:15:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 01:15:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-30 01:15:23,858 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-11-30 01:15:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:23,858 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-30 01:15:23,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:15:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-30 01:15:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:15:23,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:23,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:24,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:15:24,070 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:24,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:24,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1251711063, now seen corresponding path program 1 times [2020-11-30 01:15:24,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:24,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250037577] [2020-11-30 01:15:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:24,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:15:24,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:24,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:24,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250037577] [2020-11-30 01:15:24,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:24,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 01:15:24,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652787246] [2020-11-30 01:15:24,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:15:24,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:15:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:15:24,647 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-11-30 01:15:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:25,722 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-11-30 01:15:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:15:25,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-30 01:15:25,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:25,726 INFO L225 Difference]: With dead ends: 64 [2020-11-30 01:15:25,726 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 01:15:25,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:15:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 01:15:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2020-11-30 01:15:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:15:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-30 01:15:25,739 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2020-11-30 01:15:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:25,739 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-30 01:15:25,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:15:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-30 01:15:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:15:25,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:25,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:25,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:15:25,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-30 01:15:25,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:25,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720008768] [2020-11-30 01:15:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:15:27,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:50,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:50,526 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:16:50,526 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:16:50,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:16:50,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:16:50 BoogieIcfgContainer [2020-11-30 01:16:50,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:16:50,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:16:50,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:16:50,758 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:16:50,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:13" (3/4) ... [2020-11-30 01:16:50,760 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:16:50,801 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a26e6cf7-81ae-4a23-a234-2f821261effa/bin/uautomizer/witness.graphml [2020-11-30 01:16:50,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:16:50,803 INFO L168 Benchmark]: Toolchain (without parser) took 229091.68 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.4 MB in the beginning and 38.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:50,804 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 43.8 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:50,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.46 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 29.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:50,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.52 ms. Allocated memory is still 60.8 MB. Free memory was 29.2 MB in the beginning and 27.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:50,806 INFO L168 Benchmark]: Boogie Preprocessor took 68.05 ms. Allocated memory is still 60.8 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:50,806 INFO L168 Benchmark]: RCFGBuilder took 11009.68 ms. Allocated memory is still 60.8 MB. Free memory was 26.0 MB in the beginning and 30.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:50,807 INFO L168 Benchmark]: TraceAbstraction took 217585.37 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 29.7 MB in the beginning and 40.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:50,808 INFO L168 Benchmark]: Witness Printer took 44.25 ms. Allocated memory is still 79.7 MB. Free memory was 40.3 MB in the beginning and 38.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:50,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 43.8 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.46 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 29.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.52 ms. Allocated memory is still 60.8 MB. Free memory was 29.2 MB in the beginning and 27.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.05 ms. Allocated memory is still 60.8 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11009.68 ms. Allocated memory is still 60.8 MB. Free memory was 26.0 MB in the beginning and 30.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 217585.37 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 29.7 MB in the beginning and 40.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Witness Printer took 44.25 ms. Allocated memory is still 79.7 MB. Free memory was 40.3 MB in the beginning and 38.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire2.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 217.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 111.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 106 SDslu, 177 SDs, 0 SdLazy, 117 SolverSat, 36 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 66.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 58.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 2130 SizeOfPredicates, 11 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...