./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd8d8af301e4791886ec1ff9f4a142cca0e3e497 .................................................................................................................................................................................................................................................................................................... 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_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd8d8af301e4791886ec1ff9f4a142cca0e3e497 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2020-12-09 04:50:41,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:50:41,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:50:41,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:50:41,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:50:41,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:50:41,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:50:41,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:50:41,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:50:41,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:50:41,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:50:41,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:50:41,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:50:41,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:50:41,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:50:41,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:50:41,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:50:41,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:50:41,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:50:41,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:50:41,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:50:41,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:50:41,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:50:41,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:50:41,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:50:41,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:50:41,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:50:41,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:50:41,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:50:41,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:50:41,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:50:41,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:50:41,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:50:41,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:50:41,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:50:41,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:50:41,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:50:41,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:50:41,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:50:41,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:50:41,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:50:41,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:50:41,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:50:41,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:50:41,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:50:41,876 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:50:41,876 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:50:41,880 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:50:41,880 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:50:41,881 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:50:41,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:50:41,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:50:41,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:50:41,881 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:50:41,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:50:41,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:50:41,882 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:50:41,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:50:41,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:50:41,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:50:41,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:50:41,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:50:41,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:50:41,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:50:41,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:50:41,884 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:50:41,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:50:41,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:50:41,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:50:41,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:50:41,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:50:41,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:50:41,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:50:41,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:50:41,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:50:41,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:50:41,886 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:50:41,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:50:41,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:50:41,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:50:41,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:50:41,887 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd8d8af301e4791886ec1ff9f4a142cca0e3e497 [2020-12-09 04:50:42,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:50:42,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:50:42,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:50:42,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:50:42,082 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:50:42,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2020-12-09 04:50:42,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/00a87ebc8/341dd9e863de4047a71b975f3ad7e311/FLAG84a9ffc3b [2020-12-09 04:50:42,474 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:50:42,474 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2020-12-09 04:50:42,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/00a87ebc8/341dd9e863de4047a71b975f3ad7e311/FLAG84a9ffc3b [2020-12-09 04:50:42,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/00a87ebc8/341dd9e863de4047a71b975f3ad7e311 [2020-12-09 04:50:42,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:50:42,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:50:42,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:50:42,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:50:42,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:50:42,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0c3fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42, skipping insertion in model container [2020-12-09 04:50:42,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:50:42,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:50:42,628 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c[709,722] [2020-12-09 04:50:42,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:50:42,661 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:50:42,674 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c[709,722] [2020-12-09 04:50:42,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:50:42,700 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:50:42,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42 WrapperNode [2020-12-09 04:50:42,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:50:42,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:50:42,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:50:42,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:50:42,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:50:42,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:50:42,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:50:42,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:50:42,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... [2020-12-09 04:50:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:50:42,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:50:42,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:50:42,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:50:42,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:50:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:50:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:50:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:50:42,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:50:42,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:50:42,981 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 04:50:42,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:42 BoogieIcfgContainer [2020-12-09 04:50:42,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:50:42,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:50:42,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:50:42,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:50:42,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:50:42" (1/3) ... [2020-12-09 04:50:42,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c95dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:42, skipping insertion in model container [2020-12-09 04:50:42,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:42" (2/3) ... [2020-12-09 04:50:42,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c95dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:42, skipping insertion in model container [2020-12-09 04:50:42,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:42" (3/3) ... [2020-12-09 04:50:42,989 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound50.c [2020-12-09 04:50:43,000 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:50:43,004 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 04:50:43,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 04:50:43,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:50:43,042 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:50:43,042 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:50:43,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:50:43,043 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:50:43,043 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:50:43,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:50:43,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:50:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 04:50:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:50:43,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:50:43,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:50:43,062 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]=== [2020-12-09 04:50:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:50:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 04:50:43,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:50:43,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639085500] [2020-12-09 04:50:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:50:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:50:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:50:43,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639085500] [2020-12-09 04:50:43,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:50:43,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:50:43,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443925335] [2020-12-09 04:50:43,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:50:43,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:50:43,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:50:43,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:50:43,190 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 04:50:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:50:43,203 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 04:50:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:50:43,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 04:50:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:50:43,210 INFO L225 Difference]: With dead ends: 57 [2020-12-09 04:50:43,210 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 04:50:43,212 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 [2020-12-09 04:50:43,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 04:50:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 04:50:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 04:50:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 04:50:43,238 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 04:50:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:50:43,238 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 04:50:43,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:50:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 04:50:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:50:43,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:50:43,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:50:43,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:50:43,239 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]=== [2020-12-09 04:50:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:50:43,240 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 04:50:43,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:50:43,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004191894] [2020-12-09 04:50:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:50:43,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 04:50:43,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635156890] [2020-12-09 04:50:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/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 [2020-12-09 04:50:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:50:43,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:50:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:50:43,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:50:43,328 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 04:50:43,328 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 04:50:43,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 04:50:43,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:50:43 BoogieIcfgContainer [2020-12-09 04:50:43,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:50:43,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:50:43,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:50:43,605 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:50:43,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:42" (3/4) ... [2020-12-09 04:50:43,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 04:50:43,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:50:43,625 INFO L168 Benchmark]: Toolchain (without parser) took 1125.36 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 27.2 MB in the beginning and 72.2 MB in the end (delta: -45.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:50:43,627 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 71.3 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:50:43,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.46 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 27.0 MB in the beginning and 72.8 MB in the end (delta: -45.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:50:43,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.55 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 70.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:50:43,633 INFO L168 Benchmark]: Boogie Preprocessor took 17.83 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 69.9 MB in the end (delta: 902.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:50:43,635 INFO L168 Benchmark]: RCFGBuilder took 233.69 ms. Allocated memory is still 100.7 MB. Free memory was 69.6 MB in the beginning and 53.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 04:50:43,637 INFO L168 Benchmark]: TraceAbstraction took 618.55 ms. Allocated memory is still 100.7 MB. Free memory was 52.7 MB in the beginning and 72.5 MB in the end (delta: -19.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:50:43,638 INFO L168 Benchmark]: Witness Printer took 12.99 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 72.2 MB in the end (delta: 267.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:50:43,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 71.3 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 206.46 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 27.0 MB in the beginning and 72.8 MB in the end (delta: -45.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.55 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 70.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.83 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 69.9 MB in the end (delta: 902.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 233.69 ms. Allocated memory is still 100.7 MB. Free memory was 69.6 MB in the beginning and 53.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 618.55 ms. Allocated memory is still 100.7 MB. Free memory was 52.7 MB in the beginning and 72.5 MB in the end (delta: -19.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 12.99 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 72.2 MB in the end (delta: 267.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int 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++<50 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=29occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 0.2.0-7b2dab5 [2020-12-09 04:50:45,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:50:45,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:50:45,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:50:45,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:50:45,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:50:45,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:50:45,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:50:45,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:50:45,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:50:45,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:50:45,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:50:45,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:50:45,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:50:45,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:50:45,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:50:45,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:50:45,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:50:45,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:50:45,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:50:45,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:50:45,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:50:45,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:50:45,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:50:45,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:50:45,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:50:45,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:50:45,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:50:45,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:50:45,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:50:45,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:50:45,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:50:45,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:50:45,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:50:45,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:50:45,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:50:45,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:50:45,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:50:45,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:50:45,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:50:45,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:50:45,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 04:50:45,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:50:45,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:50:45,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:50:45,434 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:50:45,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:50:45,435 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:50:45,435 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:50:45,435 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:50:45,435 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:50:45,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:50:45,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:50:45,437 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 04:50:45,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 04:50:45,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:50:45,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:50:45,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:50:45,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:50:45,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:50:45,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 04:50:45,438 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 04:50:45,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:50:45,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:50:45,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:50:45,439 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_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd8d8af301e4791886ec1ff9f4a142cca0e3e497 [2020-12-09 04:50:45,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:50:45,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:50:45,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:50:45,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:50:45,678 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:50:45,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2020-12-09 04:50:45,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/ac9975750/180a7a67a8054b80be8c19092a7b94f8/FLAGf34970076 [2020-12-09 04:50:46,119 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:50:46,120 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c [2020-12-09 04:50:46,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/ac9975750/180a7a67a8054b80be8c19092a7b94f8/FLAGf34970076 [2020-12-09 04:50:46,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/data/ac9975750/180a7a67a8054b80be8c19092a7b94f8 [2020-12-09 04:50:46,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:50:46,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:50:46,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:50:46,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:50:46,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:50:46,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ca37c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46, skipping insertion in model container [2020-12-09 04:50:46,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:50:46,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:50:46,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c[709,722] [2020-12-09 04:50:46,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:50:46,285 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:50:46,299 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound50.c[709,722] [2020-12-09 04:50:46,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:50:46,328 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:50:46,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46 WrapperNode [2020-12-09 04:50:46,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:50:46,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:50:46,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:50:46,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:50:46,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:50:46,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:50:46,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:50:46,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:50:46,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... [2020-12-09 04:50:46,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:50:46,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:50:46,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:50:46,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:50:46,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:50:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 04:50:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:50:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:50:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:50:59,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:50:59,485 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 04:50:59,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:59 BoogieIcfgContainer [2020-12-09 04:50:59,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:50:59,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:50:59,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:50:59,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:50:59,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:50:46" (1/3) ... [2020-12-09 04:50:59,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e563f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:59, skipping insertion in model container [2020-12-09 04:50:59,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:50:46" (2/3) ... [2020-12-09 04:50:59,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e563f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:50:59, skipping insertion in model container [2020-12-09 04:50:59,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:59" (3/3) ... [2020-12-09 04:50:59,493 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound50.c [2020-12-09 04:50:59,505 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:50:59,508 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 04:50:59,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 04:50:59,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:50:59,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:50:59,534 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:50:59,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:50:59,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:50:59,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:50:59,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:50:59,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:50:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 04:50:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:50:59,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:50:59,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:50:59,548 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]=== [2020-12-09 04:50:59,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:50:59,551 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 04:50:59,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:50:59,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266540578] [2020-12-09 04:50:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 04:50:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:50:59,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 04:50:59,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:50:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:50:59,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:50:59,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266540578] [2020-12-09 04:50:59,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:50:59,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:50:59,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975586720] [2020-12-09 04:50:59,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 04:50:59,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:50:59,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 04:50:59,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:50:59,723 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 04:50:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:50:59,735 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 04:50:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 04:50:59,736 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 04:50:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:50:59,742 INFO L225 Difference]: With dead ends: 62 [2020-12-09 04:50:59,742 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 04:50:59,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 04:50:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 04:50:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 04:50:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 04:50:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 04:50:59,766 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 04:50:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:50:59,767 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 04:50:59,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 04:50:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 04:50:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:50:59,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:50:59,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:50:59,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 04:50:59,968 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]=== [2020-12-09 04:50:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:50:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 04:50:59,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:50:59,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242059938] [2020-12-09 04:50:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 04:51:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 04:51:00,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:51:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:00,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:51:00,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242059938] [2020-12-09 04:51:00,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:00,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:00,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403055589] [2020-12-09 04:51:00,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:51:00,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:51:00,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:51:00,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:51:00,259 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2020-12-09 04:51:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:20,343 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 04:51:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 04:51:20,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 04:51:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:20,345 INFO L225 Difference]: With dead ends: 39 [2020-12-09 04:51:20,345 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 04:51:20,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:51:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 04:51:20,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-09 04:51:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 04:51:20,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-09 04:51:20,352 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-12-09 04:51:20,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:20,353 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-09 04:51:20,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:51:20,353 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-09 04:51:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 04:51:20,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:20,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:20,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 04:51:20,556 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]=== [2020-12-09 04:51:20,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:20,558 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 04:51:20,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:51:20,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597761404] [2020-12-09 04:51:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 04:51:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:21,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 04:51:21,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:51:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:24,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:51:24,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597761404] [2020-12-09 04:51:24,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:24,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:51:24,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105977401] [2020-12-09 04:51:24,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 04:51:24,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:51:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 04:51:24,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:51:24,623 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2020-12-09 04:51:26,124 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 04:51:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:41,487 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-12-09 04:51:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 04:51:41,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 04:51:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:41,589 INFO L225 Difference]: With dead ends: 37 [2020-12-09 04:51:41,589 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 04:51:41,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 04:51:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 04:51:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-12-09 04:51:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 04:51:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 04:51:41,596 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-12-09 04:51:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:41,596 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 04:51:41,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 04:51:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 04:51:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 04:51:41,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:41,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:41,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 04:51:41,799 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]=== [2020-12-09 04:51:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:41,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2020-12-09 04:51:41,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:51:41,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807539325] [2020-12-09 04:51:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 04:51:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:51:42,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:51:42,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:51:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:51:42,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 04:51:42,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807539325] [2020-12-09 04:51:42,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:51:42,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:51:42,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536197256] [2020-12-09 04:51:42,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:51:42,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 04:51:42,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:51:42,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:42,235 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 04:51:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:51:42,832 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-12-09 04:51:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:51:42,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 04:51:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:51:42,833 INFO L225 Difference]: With dead ends: 39 [2020-12-09 04:51:42,834 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 04:51:42,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:51:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 04:51:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 04:51:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 04:51:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 04:51:42,839 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-12-09 04:51:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:51:42,839 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 04:51:42,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:51:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 04:51:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 04:51:42,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:51:42,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:51:43,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 04:51:43,042 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]=== [2020-12-09 04:51:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:51:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 04:51:43,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 04:51:43,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227149620] [2020-12-09 04:51:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 04:51:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:51:44,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:52:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 04:52:38,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 04:52:38,392 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 04:52:38,392 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 04:52:38,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 04:52:38,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:52:38 BoogieIcfgContainer [2020-12-09 04:52:38,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:52:38,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:52:38,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:52:38,619 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:52:38,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:50:59" (3/4) ... [2020-12-09 04:52:38,621 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 04:52:38,648 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b97165d2-782e-4ffb-bcd4-639e44f9f414/bin/utaipan/witness.graphml [2020-12-09 04:52:38,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:52:38,649 INFO L168 Benchmark]: Toolchain (without parser) took 112511.45 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 42.0 MB in the beginning and 34.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-12-09 04:52:38,650 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:52:38,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.52 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 43.3 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:52:38,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 41.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:52:38,651 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 40.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:52:38,651 INFO L168 Benchmark]: RCFGBuilder took 13092.52 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 40.0 MB in the beginning and 60.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:52:38,652 INFO L168 Benchmark]: TraceAbstraction took 99130.76 ms. Allocated memory is still 81.8 MB. Free memory was 59.7 MB in the beginning and 36.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2020-12-09 04:52:38,652 INFO L168 Benchmark]: Witness Printer took 29.97 ms. Allocated memory is still 81.8 MB. Free memory was 36.5 MB in the beginning and 34.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:52:38,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 190.52 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 43.3 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 41.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 40.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 13092.52 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 40.0 MB in the beginning and 60.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 99130.76 ms. Allocated memory is still 81.8 MB. Free memory was 59.7 MB in the beginning and 36.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Witness Printer took 29.97 ms. Allocated memory is still 81.8 MB. Free memory was 36.5 MB in the beginning and 34.4 MB in the end (delta: 2.1 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: 19]: a call to reach_error is reachable a call to reach_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++<50 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] 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: 99.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 37.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 44 SDslu, 88 SDs, 0 SdLazy, 58 SolverSat, 11 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 36.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! Received shutdown request...