./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8 --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 824208f274d2d6c45e48ee13ea25c1f3ab36296a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8 --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 824208f274d2d6c45e48ee13ea25c1f3ab36296a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:09:13,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:09:13,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:09:13,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:09:13,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:09:13,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:09:13,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:09:13,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:09:13,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:09:13,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:09:13,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:09:13,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:09:13,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:09:13,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:09:13,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:09:13,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:09:13,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:09:13,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:09:13,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:09:13,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:09:13,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:09:13,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:09:13,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:09:13,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:09:13,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:09:13,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:09:13,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:09:13,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:09:13,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:09:13,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:09:13,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:09:13,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:09:13,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:09:13,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:09:13,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:09:13,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:09:13,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:09:13,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:09:13,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:09:13,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:09:13,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:09:13,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:09:13,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:09:13,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:09:13,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:09:13,904 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:09:13,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:09:13,905 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:09:13,905 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:09:13,912 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:09:13,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:09:13,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:09:13,914 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:09:13,915 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:09:13,915 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:09:13,915 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:09:13,915 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:09:13,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:09:13,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:09:13,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:09:13,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:09:13,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:09:13,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:09:13,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:09:13,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:09:13,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:09:13,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:09:13,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:09:13,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:09:13,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:09:13,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:09:13,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:09:13,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:09:13,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:09:13,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:09:13,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:09:13,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:09:13,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:09:13,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:09:13,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:09:13,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:09:13,925 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_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 824208f274d2d6c45e48ee13ea25c1f3ab36296a [2021-10-13 08:09:14,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:09:14,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:09:14,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:09:14,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:09:14,292 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:09:14,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-10-13 08:09:14,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/faa34e54a/cb30eb8dd492434ba4e9b5e2842422d6/FLAG0924a4cc0 [2021-10-13 08:09:14,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:09:14,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-10-13 08:09:14,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/faa34e54a/cb30eb8dd492434ba4e9b5e2842422d6/FLAG0924a4cc0 [2021-10-13 08:09:15,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/faa34e54a/cb30eb8dd492434ba4e9b5e2842422d6 [2021-10-13 08:09:15,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:09:15,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:09:15,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:09:15,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:09:15,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:09:15,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61914be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15, skipping insertion in model container [2021-10-13 08:09:15,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:09:15,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:09:15,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2021-10-13 08:09:15,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:09:15,532 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:09:15,550 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2021-10-13 08:09:15,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:09:15,604 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:09:15,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15 WrapperNode [2021-10-13 08:09:15,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:09:15,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:09:15,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:09:15,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:09:15,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:09:15,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:09:15,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:09:15,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:09:15,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:09:15,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:09:15,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:09:15,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:09:15,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (1/1) ... [2021-10-13 08:09:15,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:09:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:15,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:09:15,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:09:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:09:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:09:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:09:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:09:16,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:09:16,200 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 08:09:16,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:09:16 BoogieIcfgContainer [2021-10-13 08:09:16,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:09:16,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:09:16,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:09:16,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:09:16,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:09:15" (1/3) ... [2021-10-13 08:09:16,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49932976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:09:16, skipping insertion in model container [2021-10-13 08:09:16,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:15" (2/3) ... [2021-10-13 08:09:16,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49932976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:09:16, skipping insertion in model container [2021-10-13 08:09:16,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:09:16" (3/3) ... [2021-10-13 08:09:16,213 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2021-10-13 08:09:16,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:09:16,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 08:09:16,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:09:16,337 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:09:16,337 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 08:09:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:09:16,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:16,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:09:16,386 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash 152967942, now seen corresponding path program 1 times [2021-10-13 08:09:16,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:16,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014007549] [2021-10-13 08:09:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:16,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:16,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:16,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014007549] [2021-10-13 08:09:16,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014007549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:16,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:16,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:09:16,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338859494] [2021-10-13 08:09:16,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:09:16,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:09:16,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:09:16,590 INFO L87 Difference]: Start difference. First operand has 36 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:16,611 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2021-10-13 08:09:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:09:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 08:09:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:16,622 INFO L225 Difference]: With dead ends: 71 [2021-10-13 08:09:16,622 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 08:09:16,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:09:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 08:09:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-13 08:09:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-10-13 08:09:16,662 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 5 [2021-10-13 08:09:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:16,663 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-10-13 08:09:16,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-10-13 08:09:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:09:16,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:16,664 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:09:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:09:16,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:16,666 INFO L82 PathProgramCache]: Analyzing trace with hash 150046441, now seen corresponding path program 1 times [2021-10-13 08:09:16,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:16,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651977345] [2021-10-13 08:09:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:16,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:16,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:09:16,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802956481] [2021-10-13 08:09:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:16,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:16,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:09:16,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:09:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:16,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:09:16,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:16,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:17,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:17,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651977345] [2021-10-13 08:09:17,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:09:17,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802956481] [2021-10-13 08:09:17,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802956481] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:17,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:17,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:09:17,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308920353] [2021-10-13 08:09:17,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:09:17,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:09:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:09:17,031 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:17,216 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-13 08:09:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:09:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 08:09:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:17,218 INFO L225 Difference]: With dead ends: 52 [2021-10-13 08:09:17,218 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 08:09:17,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:09:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 08:09:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2021-10-13 08:09:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-13 08:09:17,227 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 5 [2021-10-13 08:09:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:17,227 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-13 08:09:17,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-13 08:09:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:09:17,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:17,229 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:09:17,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:17,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:17,458 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:17,459 INFO L82 PathProgramCache]: Analyzing trace with hash 356501228, now seen corresponding path program 1 times [2021-10-13 08:09:17,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:17,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729500985] [2021-10-13 08:09:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:17,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:17,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:17,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729500985] [2021-10-13 08:09:17,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729500985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:17,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:17,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:09:17,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449866896] [2021-10-13 08:09:17,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:09:17,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:09:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:09:17,571 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:17,603 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-13 08:09:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:09:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:09:17,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:17,607 INFO L225 Difference]: With dead ends: 34 [2021-10-13 08:09:17,608 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 08:09:17,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:09:17,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 08:09:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 08:09:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-13 08:09:17,620 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2021-10-13 08:09:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:17,620 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-13 08:09:17,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-13 08:09:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:09:17,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:17,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:17,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:09:17,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1834102484, now seen corresponding path program 1 times [2021-10-13 08:09:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:17,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408281243] [2021-10-13 08:09:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:17,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:17,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:09:17,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126740393] [2021-10-13 08:09:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:17,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:17,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:17,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:09:17,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 08:09:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:17,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:09:17,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:17,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:17,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:17,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408281243] [2021-10-13 08:09:17,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:09:17,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126740393] [2021-10-13 08:09:17,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126740393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:17,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:09:17,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32661819] [2021-10-13 08:09:17,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:09:17,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:09:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:09:17,965 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:18,091 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-13 08:09:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:09:18,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 08:09:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:18,093 INFO L225 Difference]: With dead ends: 61 [2021-10-13 08:09:18,093 INFO L226 Difference]: Without dead ends: 53 [2021-10-13 08:09:18,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:09:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-13 08:09:18,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-10-13 08:09:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-10-13 08:09:18,103 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2021-10-13 08:09:18,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:18,104 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-10-13 08:09:18,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:18,104 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-10-13 08:09:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:09:18,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:18,105 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:18,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:18,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:18,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1966454167, now seen corresponding path program 1 times [2021-10-13 08:09:18,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:18,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242894840] [2021-10-13 08:09:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:18,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:18,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:09:18,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047730515] [2021-10-13 08:09:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:18,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:18,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:18,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:09:18,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 08:09:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:09:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:18,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:18,590 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:18,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242894840] [2021-10-13 08:09:18,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:09:18,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047730515] [2021-10-13 08:09:18,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047730515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:18,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:18,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 08:09:18,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177150179] [2021-10-13 08:09:18,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:09:18,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:18,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:09:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:09:18,609 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:18,636 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2021-10-13 08:09:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:09:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:09:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:18,641 INFO L225 Difference]: With dead ends: 73 [2021-10-13 08:09:18,641 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 08:09:18,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:09:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 08:09:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-13 08:09:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-10-13 08:09:18,661 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 15 [2021-10-13 08:09:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:18,662 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-10-13 08:09:18,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-10-13 08:09:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:09:18,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:18,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:18,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:18,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:18,870 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1763500994, now seen corresponding path program 1 times [2021-10-13 08:09:18,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:18,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635619195] [2021-10-13 08:09:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:18,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:18,883 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:09:18,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098076960] [2021-10-13 08:09:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:18,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:18,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:18,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:09:18,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 08:09:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:18,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:09:18,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:19,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:19,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:19,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635619195] [2021-10-13 08:09:19,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:09:19,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098076960] [2021-10-13 08:09:19,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098076960] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:19,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:19,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 08:09:19,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982616866] [2021-10-13 08:09:19,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:09:19,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:09:19,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:09:19,136 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:19,224 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2021-10-13 08:09:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:09:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:09:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:19,226 INFO L225 Difference]: With dead ends: 50 [2021-10-13 08:09:19,226 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 08:09:19,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:09:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 08:09:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-10-13 08:09:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-10-13 08:09:19,235 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 15 [2021-10-13 08:09:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:19,235 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-10-13 08:09:19,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-10-13 08:09:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:09:19,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:19,237 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:19,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:19,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 08:09:19,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 81620196, now seen corresponding path program 1 times [2021-10-13 08:09:19,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:19,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365390706] [2021-10-13 08:09:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:19,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:19,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:09:19,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991924660] [2021-10-13 08:09:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:19,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:19,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:09:19,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 08:09:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:19,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:09:19,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:19,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:20,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:20,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365390706] [2021-10-13 08:09:20,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:09:20,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991924660] [2021-10-13 08:09:20,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991924660] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:09:20,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731016779] [2021-10-13 08:09:20,059 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-10-13 08:09:20,060 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:09:20,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:09:20,071 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:09:20,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:09:20,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,133 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:09:20,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:09:20,142 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:09:20,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:09:20,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-13 08:09:20,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:20,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:20,287 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 08:09:20,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 08:09:20,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:09:20,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:09:20,294 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:09:20,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:20,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:20,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:20,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 08:09:20,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 08:09:20,302 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 08:09:20,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:09:20,364 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:20,373 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-10-13 08:09:20,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-13 08:09:20,381 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:09:20,382 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:322, output treesize:139 [2021-10-13 08:09:20,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:20,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 08:09:20,594 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_13| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:09:20,597 INFO L168 Benchmark]: Toolchain (without parser) took 5358.54 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 69.1 MB in the beginning and 73.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:09:20,597 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:09:20,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.48 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 69.1 MB in the beginning and 103.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:09:20,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.13 ms. Allocated memory is still 127.9 MB. Free memory was 103.8 MB in the beginning and 102.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:09:20,598 INFO L168 Benchmark]: Boogie Preprocessor took 55.50 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 100.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:09:20,599 INFO L168 Benchmark]: RCFGBuilder took 483.71 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 87.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:09:20,599 INFO L168 Benchmark]: TraceAbstraction took 4390.90 ms. Allocated memory is still 127.9 MB. Free memory was 87.0 MB in the beginning and 73.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:09:20,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.48 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 69.1 MB in the beginning and 103.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.13 ms. Allocated memory is still 127.9 MB. Free memory was 103.8 MB in the beginning and 102.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.50 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 100.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 483.71 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 87.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4390.90 ms. Allocated memory is still 127.9 MB. Free memory was 87.0 MB in the beginning and 73.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_13| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_13|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:09:20,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:09:23,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:09:23,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:09:23,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:09:23,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:09:23,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:09:23,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:09:23,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:09:23,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:09:23,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:09:23,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:09:23,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:09:23,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:09:23,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:09:23,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:09:23,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:09:23,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:09:23,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:09:23,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:09:23,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:09:23,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:09:23,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:09:23,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:09:23,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:09:23,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:09:23,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:09:23,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:09:23,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:09:23,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:09:23,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:09:23,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:09:23,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:09:23,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:09:23,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:09:23,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:09:23,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:09:23,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:09:23,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:09:23,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:09:23,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:09:23,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:09:23,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:09:23,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:09:23,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:09:23,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:09:23,451 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:09:23,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:09:23,452 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:09:23,452 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:09:23,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:09:23,453 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:09:23,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:09:23,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:09:23,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:09:23,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:09:23,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:09:23,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:09:23,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:09:23,457 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:09:23,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:09:23,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:09:23,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:09:23,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:09:23,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:09:23,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:09:23,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:09:23,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:09:23,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:09:23,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:09:23,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:09:23,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:09:23,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:09:23,461 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:09:23,461 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:09:23,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:09:23,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:09:23,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:09:23,463 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_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 824208f274d2d6c45e48ee13ea25c1f3ab36296a [2021-10-13 08:09:23,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:09:23,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:09:23,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:09:23,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:09:23,944 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:09:23,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-10-13 08:09:24,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/169511ff2/c4e5ccb965354d418490c94267ac7291/FLAGe47c216db [2021-10-13 08:09:24,596 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:09:24,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2021-10-13 08:09:24,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/169511ff2/c4e5ccb965354d418490c94267ac7291/FLAGe47c216db [2021-10-13 08:09:24,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/data/169511ff2/c4e5ccb965354d418490c94267ac7291 [2021-10-13 08:09:24,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:09:24,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:09:24,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:09:24,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:09:24,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:09:25,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:09:24" (1/1) ... [2021-10-13 08:09:25,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3b9502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25, skipping insertion in model container [2021-10-13 08:09:25,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:09:24" (1/1) ... [2021-10-13 08:09:25,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:09:25,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:09:25,254 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2021-10-13 08:09:25,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:09:25,297 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:09:25,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c[576,589] [2021-10-13 08:09:25,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:09:25,379 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:09:25,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25 WrapperNode [2021-10-13 08:09:25,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:09:25,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:09:25,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:09:25,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:09:25,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:09:25,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:09:25,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:09:25,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:09:25,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:09:25,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:09:25,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:09:25,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:09:25,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (1/1) ... [2021-10-13 08:09:25,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:09:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:25,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:09:25,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:09:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:09:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:09:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:09:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:09:26,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:09:26,504 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 08:09:26,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:09:26 BoogieIcfgContainer [2021-10-13 08:09:26,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:09:26,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:09:26,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:09:26,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:09:26,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:09:24" (1/3) ... [2021-10-13 08:09:26,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd9d790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:09:26, skipping insertion in model container [2021-10-13 08:09:26,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:25" (2/3) ... [2021-10-13 08:09:26,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd9d790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:09:26, skipping insertion in model container [2021-10-13 08:09:26,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:09:26" (3/3) ... [2021-10-13 08:09:26,520 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2021-10-13 08:09:26,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:09:26,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 08:09:26,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:09:26,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:09:26,609 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 08:09:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:26,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:09:26,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:26,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:26,649 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:26,656 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-10-13 08:09:26,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:26,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151532406] [2021-10-13 08:09:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:26,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:26,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:26,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:26,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:09:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:26,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:09:26,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:26,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:26,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:26,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151532406] [2021-10-13 08:09:26,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151532406] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:26,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:26,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:09:26,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992287576] [2021-10-13 08:09:26,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:09:26,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:09:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:09:26,886 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:26,906 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-10-13 08:09:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:09:26,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:09:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:26,916 INFO L225 Difference]: With dead ends: 79 [2021-10-13 08:09:26,916 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 08:09:26,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:09:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 08:09:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 08:09:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-10-13 08:09:26,952 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-10-13 08:09:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:26,953 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-10-13 08:09:26,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-10-13 08:09:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:09:26,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:26,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:26,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:27,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:09:27,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:27,163 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-10-13 08:09:27,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:27,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98723348] [2021-10-13 08:09:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:27,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:27,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:27,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:27,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:09:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:27,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:09:27,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:27,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:28,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:28,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98723348] [2021-10-13 08:09:28,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98723348] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:28,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:28,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-13 08:09:28,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289684102] [2021-10-13 08:09:28,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:09:28,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:09:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:09:28,565 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:36,931 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-10-13 08:09:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:09:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:09:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:36,934 INFO L225 Difference]: With dead ends: 83 [2021-10-13 08:09:36,934 INFO L226 Difference]: Without dead ends: 79 [2021-10-13 08:09:36,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3737.9ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-13 08:09:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-13 08:09:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 49. [2021-10-13 08:09:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-10-13 08:09:36,949 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 8 [2021-10-13 08:09:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:36,964 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-10-13 08:09:36,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-10-13 08:09:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:09:36,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:36,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:36,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:37,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:09:37,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-10-13 08:09:37,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:37,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458396732] [2021-10-13 08:09:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:37,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:37,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:37,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:37,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:09:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:09:37,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:37,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:37,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:37,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458396732] [2021-10-13 08:09:37,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458396732] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:37,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:37,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 08:09:37,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434889046] [2021-10-13 08:09:37,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:09:37,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:09:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:09:37,434 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:37,562 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2021-10-13 08:09:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:09:37,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:09:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:37,564 INFO L225 Difference]: With dead ends: 66 [2021-10-13 08:09:37,566 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 08:09:37,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:09:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 08:09:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2021-10-13 08:09:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-10-13 08:09:37,600 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 9 [2021-10-13 08:09:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:37,602 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-10-13 08:09:37,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-10-13 08:09:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:09:37,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:37,610 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:37,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 08:09:37,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:09:37,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:37,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:37,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-10-13 08:09:37,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:37,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447362294] [2021-10-13 08:09:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:37,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:37,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:37,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:37,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:09:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:38,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:09:38,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:38,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:39,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:39,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447362294] [2021-10-13 08:09:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447362294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:39,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:39,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-13 08:09:39,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632751647] [2021-10-13 08:09:39,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:09:39,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:09:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:09:39,825 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:42,626 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2021-10-13 08:09:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:09:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:09:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:42,629 INFO L225 Difference]: With dead ends: 93 [2021-10-13 08:09:42,629 INFO L226 Difference]: Without dead ends: 85 [2021-10-13 08:09:42,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1424.4ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-13 08:09:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-13 08:09:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2021-10-13 08:09:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 72 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2021-10-13 08:09:42,647 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 10 [2021-10-13 08:09:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:42,648 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2021-10-13 08:09:42,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2021-10-13 08:09:42,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:09:42,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:42,650 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:42,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:42,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:09:42,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-10-13 08:09:42,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:42,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493566184] [2021-10-13 08:09:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:42,868 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:42,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:42,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:42,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:09:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:43,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:09:43,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:43,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:43,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:43,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493566184] [2021-10-13 08:09:43,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493566184] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:43,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:43,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 08:09:43,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932711969] [2021-10-13 08:09:43,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:09:43,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:09:43,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:09:43,324 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:43,499 INFO L93 Difference]: Finished difference Result 118 states and 142 transitions. [2021-10-13 08:09:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:09:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 08:09:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:43,519 INFO L225 Difference]: With dead ends: 118 [2021-10-13 08:09:43,519 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 08:09:43,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:09:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 08:09:43,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-13 08:09:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 72 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2021-10-13 08:09:43,549 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 18 [2021-10-13 08:09:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:43,550 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2021-10-13 08:09:43,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2021-10-13 08:09:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:09:43,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:43,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:43,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:43,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:09:43,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2092681793, now seen corresponding path program 1 times [2021-10-13 08:09:43,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:43,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813208877] [2021-10-13 08:09:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:43,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:43,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:43,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:09:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:44,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:09:44,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:44,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:44,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:09:44,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813208877] [2021-10-13 08:09:44,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813208877] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:44,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:44,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 08:09:44,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129092512] [2021-10-13 08:09:44,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:09:44,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:09:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:09:44,616 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:45,722 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2021-10-13 08:09:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:09:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 08:09:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:45,724 INFO L225 Difference]: With dead ends: 80 [2021-10-13 08:09:45,724 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 08:09:45,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 505.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-10-13 08:09:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 08:09:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2021-10-13 08:09:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-10-13 08:09:45,740 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2021-10-13 08:09:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:45,741 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-10-13 08:09:45,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-10-13 08:09:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:09:45,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:45,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:45,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:45,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:09:45,958 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:45,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:45,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1022670152, now seen corresponding path program 1 times [2021-10-13 08:09:45,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:45,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886492091] [2021-10-13 08:09:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:45,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:45,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:45,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:09:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:46,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 08:09:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:47,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:05,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:05,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886492091] [2021-10-13 08:10:05,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886492091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:10:05,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:10:05,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 19 [2021-10-13 08:10:05,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947215113] [2021-10-13 08:10:05,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 08:10:05,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 08:10:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 08:10:05,306 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:45,571 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-10-13 08:10:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 08:10:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 08:10:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:45,579 INFO L225 Difference]: With dead ends: 122 [2021-10-13 08:10:45,579 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 08:10:45,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 30836.5ms TimeCoverageRelationStatistics Valid=387, Invalid=873, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 08:10:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 08:10:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 83. [2021-10-13 08:10:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 82 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2021-10-13 08:10:45,602 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 20 [2021-10-13 08:10:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:45,602 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2021-10-13 08:10:45,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2021-10-13 08:10:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:10:45,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:45,604 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:45,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:45,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:10:45,813 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:10:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:45,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1135496359, now seen corresponding path program 1 times [2021-10-13 08:10:45,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:45,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909136351] [2021-10-13 08:10:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:45,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:45,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:45,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:45,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:10:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:46,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:10:46,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:47,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:22,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:22,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909136351] [2021-10-13 08:11:22,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909136351] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:22,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 08:11:22,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-10-13 08:11:22,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137041274] [2021-10-13 08:11:22,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 08:11:22,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 08:11:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:11:22,345 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:32,420 INFO L93 Difference]: Finished difference Result 127 states and 147 transitions. [2021-10-13 08:12:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 08:12:32,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 08:12:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:32,422 INFO L225 Difference]: With dead ends: 127 [2021-10-13 08:12:32,422 INFO L226 Difference]: Without dead ends: 119 [2021-10-13 08:12:32,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 55382.7ms TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2021-10-13 08:12:32,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-13 08:12:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2021-10-13 08:12:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.25) internal successors, (115), 97 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2021-10-13 08:12:32,455 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 24 [2021-10-13 08:12:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:32,455 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2021-10-13 08:12:32,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2021-10-13 08:12:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:12:32,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:32,457 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:32,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:32,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:32,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:12:32,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:32,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1501746768, now seen corresponding path program 1 times [2021-10-13 08:12:32,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:32,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624903808] [2021-10-13 08:12:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:32,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:32,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:32,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:32,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:12:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:33,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:12:33,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:33,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:33,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:33,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624903808] [2021-10-13 08:12:33,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624903808] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:33,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [455050291] [2021-10-13 08:12:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:33,398 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:12:33,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:12:33,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 08:12:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:33,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:12:33,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:34,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:34,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [455050291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:34,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172901867] [2021-10-13 08:12:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:34,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:34,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:34,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:12:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 08:12:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:34,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:12:34,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:34,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:34,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172901867] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:34,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:12:34,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-13 08:12:34,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538504187] [2021-10-13 08:12:34,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:12:34,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:12:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:12:34,920 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:35,347 INFO L93 Difference]: Finished difference Result 205 states and 239 transitions. [2021-10-13 08:12:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:12:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 08:12:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:35,355 INFO L225 Difference]: With dead ends: 205 [2021-10-13 08:12:35,355 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 08:12:35,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 337.4ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:12:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 08:12:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2021-10-13 08:12:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 118 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2021-10-13 08:12:35,379 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 24 [2021-10-13 08:12:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:35,380 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2021-10-13 08:12:35,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2021-10-13 08:12:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:12:35,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:35,382 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:35,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:35,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:35,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:35,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:35,996 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:12:35,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2122999750, now seen corresponding path program 1 times [2021-10-13 08:12:35,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:35,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885835050] [2021-10-13 08:12:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:35,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:35,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:36,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 08:12:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:36,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:12:36,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:36,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:36,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:36,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885835050] [2021-10-13 08:12:36,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885835050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:36,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1653557941] [2021-10-13 08:12:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:36,876 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:12:36,890 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:12:36,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 08:12:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:37,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:12:37,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:37,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:37,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1653557941] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:37,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996733141] [2021-10-13 08:12:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:37,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:12:37,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:37,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:12:37,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 08:12:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:38,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:12:38,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:38,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996733141] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:12:38,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:12:38,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 16 [2021-10-13 08:12:38,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024584362] [2021-10-13 08:12:38,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 08:12:38,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 08:12:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-13 08:12:38,924 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:39,348 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2021-10-13 08:12:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 08:12:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 08:12:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:39,349 INFO L225 Difference]: With dead ends: 123 [2021-10-13 08:12:39,349 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 08:12:39,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 524.3ms TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-10-13 08:12:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 08:12:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 08:12:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0) internal successors, (28), 28 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-10-13 08:12:39,357 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 27 [2021-10-13 08:12:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:39,357 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-10-13 08:12:39,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-10-13 08:12:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:12:39,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:39,359 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:39,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 08:12:39,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:39,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:39,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:39,967 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:12:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:39,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1388511663, now seen corresponding path program 1 times [2021-10-13 08:12:39,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:39,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057449387] [2021-10-13 08:12:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:39,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:39,971 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:39,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 08:12:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:40,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:12:40,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:42,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:07,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:07,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057449387] [2021-10-13 08:14:07,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057449387] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:14:07,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1898153870] [2021-10-13 08:14:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:07,004 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:14:07,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:14:07,006 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:14:07,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 08:14:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:07,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:14:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:09,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:39,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1898153870] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:14:39,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157678113] [2021-10-13 08:14:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:39,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:14:39,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:14:39,992 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:14:40,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 08:14:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:41,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 08:14:41,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:42,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:15:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:42,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157678113] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:15:42,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-13 08:15:42,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 11, 10, 8, 12] total 28 [2021-10-13 08:15:42,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53081777] [2021-10-13 08:15:42,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 08:15:42,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:15:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 08:15:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2021-10-13 08:15:42,642 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:52,719 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 23 [2021-10-13 08:16:02,622 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-13 08:17:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:17:11,351 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-10-13 08:17:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:17:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 08:17:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:17:11,362 INFO L225 Difference]: With dead ends: 29 [2021-10-13 08:17:11,362 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:17:11,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 135705.3ms TimeCoverageRelationStatistics Valid=285, Invalid=698, Unknown=9, NotChecked=0, Total=992 [2021-10-13 08:17:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:17:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:17:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:17:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:17:11,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-13 08:17:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:17:11,365 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:17:11,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:17:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:17:11,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:17:11,367 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:17:11,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:11,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:11,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:11,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:17:11,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:17:11,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:12,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:17:36,104 WARN L207 SmtUtils]: Spent 17.71 s on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2021-10-13 08:17:51,566 WARN L207 SmtUtils]: Spent 15.46 s on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-10-13 08:18:19,980 WARN L207 SmtUtils]: Spent 28.41 s on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-10-13 08:18:35,125 WARN L207 SmtUtils]: Spent 15.14 s on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 08:18:35,128 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-10-13 08:18:35,129 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse6 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse3 (bvmul .cse4 ULTIMATE.start_main_~q~0)) (.cse2 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse7 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))))) (let ((.cse0 (or (and .cse9 (= .cse2 ULTIMATE.start_main_~b~0) (= .cse2 ULTIMATE.start_main_~a~0)) (and .cse9 .cse7 (= (bvmul .cse4 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)))) (.cse1 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse8 (= .cse6 (bvadd .cse3 ULTIMATE.start_main_~r~0)))) (or (let ((.cse5 ((_ sign_extend 32) (_ bv2 32)))) (and .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~q~0) (= ~counter~0 (_ bv0 32)) (= (bvadd .cse3 (bvmul .cse4 ULTIMATE.start_main_~a~0 .cse5) (bvneg (bvmul ULTIMATE.start_main_~b~0 .cse5)) ULTIMATE.start_main_~r~0) .cse6) (or (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (bvmul ULTIMATE.start_main_~y~0 (_ bv2 32))) ULTIMATE.start_main_~a~0)) (not (bvsge ULTIMATE.start_main_~r~0 (bvmul .cse5 ULTIMATE.start_main_~b~0)))))) (and (= (_ bv2 32) ~counter~0) .cse0 .cse7 .cse1 .cse8) (and (= (_ bv3 32) ~counter~0) .cse9 .cse7 .cse1 .cse8))))) [2021-10-13 08:18:35,129 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-10-13 08:18:35,129 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,129 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-13 08:18:35,129 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse9 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse7 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse8 (bvmul .cse9 ULTIMATE.start_main_~q~0))) (let ((.cse1 (bvmul .cse9 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse3 (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0)) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (= .cse7 (bvadd .cse8 ULTIMATE.start_main_~r~0))) (.cse6 (exists ((ULTIMATE.start_main_~y~0 (_ BitVec 32))) (and (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (bvsge ULTIMATE.start_main_~r~0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)))))) (or (and (= ~counter~0 (_ bv1 32)) .cse0 (= .cse1 ULTIMATE.start_main_~b~0) .cse2 .cse3 (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) .cse4 .cse5 .cse6) (and (= (_ bv2 32) ~counter~0) (= .cse7 (bvadd .cse8 .cse1 (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) .cse0 .cse2 .cse3 .cse4 (or (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (bvmul ULTIMATE.start_main_~y~0 (_ bv2 32))) ULTIMATE.start_main_~a~0)) (not (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~b~0)))) .cse5 .cse6))))) [2021-10-13 08:18:35,129 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-10-13 08:18:35,129 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,129 INFO L860 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-10-13 08:18:35,130 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,130 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,130 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse1 (bvmul .cse2 ULTIMATE.start_main_~q~0))) (and (= .cse0 (bvadd .cse1 (bvmul .cse2 ULTIMATE.start_main_~a~0) (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) (= ~counter~0 (_ bv1 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (or (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (bvmul ULTIMATE.start_main_~y~0 (_ bv2 32))) ULTIMATE.start_main_~a~0)) (not (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~b~0)))) (= .cse0 (bvadd .cse1 ULTIMATE.start_main_~r~0))))) [2021-10-13 08:18:35,130 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,130 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse1 (bvmul .cse2 ULTIMATE.start_main_~q~0))) (and (= .cse0 (bvadd .cse1 (bvmul .cse2 ULTIMATE.start_main_~a~0) (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) (= ~counter~0 (_ bv1 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (or (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (bvmul ULTIMATE.start_main_~y~0 (_ bv2 32))) ULTIMATE.start_main_~a~0)) (not (bvsge ULTIMATE.start_main_~r~0 (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~b~0)))) (= .cse0 (bvadd .cse1 ULTIMATE.start_main_~r~0))))) [2021-10-13 08:18:35,130 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,130 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (= (_ bv2 32) ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= (bvmul .cse0 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ((_ sign_extend 32) ULTIMATE.start_main_~x~0) (bvadd (bvmul .cse0 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~y~0 (_ BitVec 32))) (and (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (bvsge ULTIMATE.start_main_~r~0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)))))) [2021-10-13 08:18:35,130 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,131 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (= (_ bv2 32) ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= (bvmul .cse0 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ((_ sign_extend 32) ULTIMATE.start_main_~x~0) (bvadd (bvmul .cse0 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~y~0 (_ BitVec 32))) (and (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (bvsge ULTIMATE.start_main_~r~0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)))))) [2021-10-13 08:18:35,131 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,131 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (= (_ bv2 32) ~counter~0) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= (bvmul .cse0 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ((_ sign_extend 32) ULTIMATE.start_main_~x~0) (bvadd (bvmul .cse0 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~y~0 (_ BitVec 32))) (and (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (bvsge ULTIMATE.start_main_~r~0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)))))) [2021-10-13 08:18:35,131 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,131 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:18:35,131 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse1 (bvmul .cse2 ULTIMATE.start_main_~q~0))) (and (= (_ bv2 32) ~counter~0) (= .cse0 (bvadd .cse1 (bvmul .cse2 ULTIMATE.start_main_~a~0) (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= .cse0 (bvadd .cse1 ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~y~0 (_ BitVec 32))) (and (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (bvsge ULTIMATE.start_main_~r~0 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))))))) [2021-10-13 08:18:35,131 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:18:35,131 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 08:18:35,132 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,132 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,132 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,132 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,132 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,133 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,133 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,133 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:18:35,133 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:18:35,133 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:18:35,138 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:18:35,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,154 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:18:35,162 INFO L168 Benchmark]: Toolchain (without parser) took 550169.29 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 52.0 MB in the beginning and 50.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:18:35,163 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:18:35,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.00 ms. Allocated memory is still 73.4 MB. Free memory was 51.9 MB in the beginning and 57.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:18:35,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 73.4 MB. Free memory was 56.9 MB in the beginning and 55.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:18:35,164 INFO L168 Benchmark]: Boogie Preprocessor took 47.86 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 54.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:18:35,164 INFO L168 Benchmark]: RCFGBuilder took 1013.55 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 42.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:18:35,165 INFO L168 Benchmark]: TraceAbstraction took 548650.27 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 42.2 MB in the beginning and 50.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:18:35,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 385.00 ms. Allocated memory is still 73.4 MB. Free memory was 51.9 MB in the beginning and 57.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 73.4 MB. Free memory was 56.9 MB in the beginning and 55.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.86 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 54.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1013.55 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 42.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 548650.27 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 42.2 MB in the beginning and 50.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 548542.2ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 41.4ms, AutomataDifference: 212606.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 83157.6ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 327 SDtfs, 1123 SDslu, 1044 SDs, 0 SdLazy, 597 SolverSat, 549 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 109072.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 562 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 228573.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=9, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 205.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 128 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 23 NumberOfFragments, 563 HoareAnnotationTreeSize, 10 FomulaSimplifications, 624 FormulaSimplificationTreeSizeReduction, 256.0ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 497 FormulaSimplificationTreeSizeReductionInter, 82893.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 125.8ms SsaConstructionTime, 4493.7ms SatisfiabilityAnalysisTime, 241676.3ms InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 670 ConstructedInterpolants, 22 QuantifiedInterpolants, 6969 SizeOfPredicates, 101 NumberOfNonLiveVariables, 1031 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 34 InterpolantComputations, 16 PerfectInterpolantSequences, 26/80 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-10-13 08:18:35,179 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,179 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,181 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 08:18:35,181 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] Derived loop invariant: (((((((2bv32 == counter && cond == 1bv32) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~sign_extendFrom8To32(0bv32) == q) && ~sign_extendFrom8To32(1bv32) == a) && cond == 1bv32) && ~sign_extendFrom8To32(x) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(y), q), r)) && (\exists ULTIMATE.start_main_~y~0 : bv32 :: ~bvsge64(ULTIMATE.start_main_~y~0, 1bv32) && ~bvsge64(r, ~sign_extendFrom8To32(ULTIMATE.start_main_~y~0))) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:18:35,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df844bc-003a-4ee2-ad5e-f07e06a19365/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...