./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --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_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/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_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/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_4328d60c-b011-4757-b2a6-cb566b697724/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 c8679dad194af8e09f8dc0270d50ea9ce875abb3 ..................................................................................................................................................................................................................................................................................................................... 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_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/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_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/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_4328d60c-b011-4757-b2a6-cb566b697724/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 c8679dad194af8e09f8dc0270d50ea9ce875abb3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:58:45,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:58:45,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:58:45,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:58:45,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:58:45,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:58:45,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:58:45,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:58:45,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:58:45,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:58:45,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:58:45,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:58:45,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:58:45,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:58:45,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:58:45,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:58:45,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:58:45,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:58:45,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:58:45,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:58:45,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:58:45,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:58:45,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:58:45,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:58:45,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:58:45,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:58:45,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:58:45,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:58:45,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:58:45,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:58:45,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:58:45,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:58:45,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:58:45,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:58:45,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:58:45,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:58:45,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:58:45,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:58:45,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:58:45,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:58:45,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:58:45,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:58:45,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:58:45,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:58:45,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:58:45,884 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:58:45,884 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:58:45,885 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:58:45,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:58:45,885 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:58:45,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:58:45,886 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:58:45,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:58:45,887 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:58:45,887 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:58:45,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:58:45,888 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:58:45,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:58:45,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:58:45,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:58:45,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:58:45,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:58:45,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:58:45,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:58:45,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:58:45,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:58:45,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:58:45,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:58:45,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:58:45,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:58:45,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:58:45,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:58:45,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:45,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:58:45,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:58:45,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:58:45,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:58:45,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:58:45,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:58:45,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:58:45,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:58:45,896 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_4328d60c-b011-4757-b2a6-cb566b697724/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-10-13 06:58:46,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:58:46,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:58:46,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:58:46,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:58:46,208 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:58:46,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-13 06:58:46,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/cb62c831c/d65642e81cdb41c7921d08529c7d74b6/FLAGf53b9dcb1 [2021-10-13 06:58:46,689 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:58:46,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-13 06:58:46,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/cb62c831c/d65642e81cdb41c7921d08529c7d74b6/FLAGf53b9dcb1 [2021-10-13 06:58:47,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/cb62c831c/d65642e81cdb41c7921d08529c7d74b6 [2021-10-13 06:58:47,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:58:47,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:58:47,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:47,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:58:47,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:58:47,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297546fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47, skipping insertion in model container [2021-10-13 06:58:47,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:58:47,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:58:47,254 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_4328d60c-b011-4757-b2a6-cb566b697724/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-13 06:58:47,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:47,277 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:58:47,287 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_4328d60c-b011-4757-b2a6-cb566b697724/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-13 06:58:47,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:47,305 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:58:47,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47 WrapperNode [2021-10-13 06:58:47,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:47,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:47,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:58:47,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:58:47,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:47,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:58:47,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:58:47,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:58:47,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:58:47,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:58:47,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:58:47,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:58:47,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (1/1) ... [2021-10-13 06:58:47,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:47,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:58:47,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:58:47,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:58:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:58:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:58:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:58:47,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:58:47,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:58:47,721 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:58:47,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:47 BoogieIcfgContainer [2021-10-13 06:58:47,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:58:47,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:58:47,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:58:47,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:58:47,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:58:47" (1/3) ... [2021-10-13 06:58:47,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353daddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:58:47, skipping insertion in model container [2021-10-13 06:58:47,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:47" (2/3) ... [2021-10-13 06:58:47,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353daddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:58:47, skipping insertion in model container [2021-10-13 06:58:47,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:47" (3/3) ... [2021-10-13 06:58:47,732 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-13 06:58:47,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:58:47,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:58:47,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:58:47,787 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 06:58:47,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:58:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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 06:58:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 06:58:47,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:58:47,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 06:58:47,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:58:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:58:47,810 INFO L82 PathProgramCache]: Analyzing trace with hash 96472452, now seen corresponding path program 1 times [2021-10-13 06:58:47,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:58:47,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146980715] [2021-10-13 06:58:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:58:47,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:58:47,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:58:47,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718315330] [2021-10-13 06:58:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:58:47,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:58:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:58:47,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:58:47,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:58:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:58:48,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 06:58:48,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:58:49,316 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 06:58:49,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:58:49,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:58:49,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146980715] [2021-10-13 06:58:49,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 06:58:49,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718315330] [2021-10-13 06:58:49,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-10-13 06:58:49,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [233586281] [2021-10-13 06:58:49,464 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 06:58:49,464 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 06:58:49,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 06:58:49,474 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 06:58:49,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 06:58:49,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:58:49,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 06:58:49,513 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:58:49,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 06:58:49,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-13 06:58:49,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 06:58:49,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 06:58:49,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:58:49,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 06:58:49,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 06:58:49,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:58:49,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:58:49,602 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 06:58:49,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 06:58:49,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 06:58:49,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 06:58:49,610 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 06:58:49,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:58:49,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:58:49,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-13 06:58:49,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 06:58:49,661 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:204, output treesize:89 [2021-10-13 06:58:49,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:58:49,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 06:58:49,878 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_12| 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 06:58:49,882 INFO L168 Benchmark]: Toolchain (without parser) took 2813.13 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.1 MB in the beginning and 69.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:49,883 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 57.3 MB in the beginning and 57.2 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:58:49,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.90 ms. Allocated memory is still 86.0 MB. Free memory was 51.9 MB in the beginning and 62.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:49,884 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 60.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:49,885 INFO L168 Benchmark]: Boogie Preprocessor took 20.54 ms. Allocated memory is still 86.0 MB. Free memory was 60.9 MB in the beginning and 59.9 MB in the end (delta: 913.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:49,886 INFO L168 Benchmark]: RCFGBuilder took 363.54 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 47.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:49,886 INFO L168 Benchmark]: TraceAbstraction took 2156.14 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.4 MB in the beginning and 69.2 MB in the end (delta: -21.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:58:49,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 57.3 MB in the beginning and 57.2 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.90 ms. Allocated memory is still 86.0 MB. Free memory was 51.9 MB in the beginning and 62.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 60.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.54 ms. Allocated memory is still 86.0 MB. Free memory was 60.9 MB in the beginning and 59.9 MB in the end (delta: 913.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 363.54 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 47.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2156.14 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.4 MB in the beginning and 69.2 MB in the end (delta: -21.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_12| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_12|: 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 06:58:49,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:58:52,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:58:52,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:58:52,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:58:52,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:58:52,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:58:52,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:58:52,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:58:52,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:58:52,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:58:52,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:58:52,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:58:52,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:58:52,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:58:52,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:58:52,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:58:52,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:58:52,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:58:52,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:58:52,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:58:52,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:58:52,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:58:52,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:58:52,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:58:52,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:58:52,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:58:52,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:58:52,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:58:52,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:58:52,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:58:52,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:58:52,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:58:52,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:58:52,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:58:52,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:58:52,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:58:52,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:58:52,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:58:52,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:58:52,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:58:52,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:58:52,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:58:52,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:58:52,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:58:52,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:58:52,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:58:52,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:58:52,449 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:58:52,450 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:58:52,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:58:52,450 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:58:52,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:58:52,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:58:52,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:58:52,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:58:52,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:58:52,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:58:52,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:58:52,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:58:52,454 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:58:52,454 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:58:52,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:58:52,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:58:52,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:58:52,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:58:52,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:58:52,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:58:52,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:58:52,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:52,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:58:52,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:58:52,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:58:52,457 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:58:52,457 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:58:52,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:58:52,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:58:52,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:58:52,458 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_4328d60c-b011-4757-b2a6-cb566b697724/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-10-13 06:58:52,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:58:52,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:58:52,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:58:52,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:58:52,858 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:58:52,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-13 06:58:52,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/94210114d/52059dab2de94f7da4c0187d7810f0ed/FLAG981d1cda8 [2021-10-13 06:58:53,400 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:58:53,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-13 06:58:53,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/94210114d/52059dab2de94f7da4c0187d7810f0ed/FLAG981d1cda8 [2021-10-13 06:58:53,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/data/94210114d/52059dab2de94f7da4c0187d7810f0ed [2021-10-13 06:58:53,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:58:53,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:58:53,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:53,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:58:53,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:58:53,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:53" (1/1) ... [2021-10-13 06:58:53,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c2c2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53, skipping insertion in model container [2021-10-13 06:58:53,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:53" (1/1) ... [2021-10-13 06:58:53,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:58:53,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:58:53,949 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_4328d60c-b011-4757-b2a6-cb566b697724/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-13 06:58:53,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:53,972 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:58:53,985 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_4328d60c-b011-4757-b2a6-cb566b697724/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-13 06:58:53,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:54,017 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:58:54,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54 WrapperNode [2021-10-13 06:58:54,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:54,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:54,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:58:54,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:58:54,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:54,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:58:54,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:58:54,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:58:54,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:58:54,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:58:54,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:58:54,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:58:54,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (1/1) ... [2021-10-13 06:58:54,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:58:54,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:58:54,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:58:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:58:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:58:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:58:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:58:54,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:58:54,419 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:58:54,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:54 BoogieIcfgContainer [2021-10-13 06:58:54,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:58:54,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:58:54,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:58:54,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:58:54,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:58:53" (1/3) ... [2021-10-13 06:58:54,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a44c062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:58:54, skipping insertion in model container [2021-10-13 06:58:54,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:54" (2/3) ... [2021-10-13 06:58:54,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a44c062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:58:54, skipping insertion in model container [2021-10-13 06:58:54,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:54" (3/3) ... [2021-10-13 06:58:54,428 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-13 06:58:54,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:58:54,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:58:54,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:58:54,484 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 06:58:54,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:58:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 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 06:58:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:58:54,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:58:54,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:58:54,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:58:54,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:58:54,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1232845228, now seen corresponding path program 1 times [2021-10-13 06:58:54,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:58:54,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244149497] [2021-10-13 06:58:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:58:54,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:58:54,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:58:54,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:58:54,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:58:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:58:54,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:58:54,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:58:54,850 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 06:58:54,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:58:54,903 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 06:58:54,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:58:54,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244149497] [2021-10-13 06:58:54,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244149497] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:58:54,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:58:54,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:58:54,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115566506] [2021-10-13 06:58:54,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:58:54,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:58:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:58:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:58:54,938 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 06:58:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:58:54,953 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-10-13 06:58:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:58:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 06:58:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:58:54,963 INFO L225 Difference]: With dead ends: 31 [2021-10-13 06:58:54,964 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 06:58:54,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:58:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 06:58:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 06:58:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 06:58:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-13 06:58:54,997 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-10-13 06:58:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:58:54,997 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-13 06:58:54,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 06:58:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-13 06:58:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:58:54,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:58:54,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:58:55,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:58:55,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:58:55,211 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:58:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:58:55,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2042191854, now seen corresponding path program 1 times [2021-10-13 06:58:55,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:58:55,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325954936] [2021-10-13 06:58:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:58:55,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:58:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:58:55,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:58:55,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:58:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:58:55,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:58:55,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:58:56,028 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 06:58:56,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:58:59,180 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 06:58:59,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:58:59,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325954936] [2021-10-13 06:58:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325954936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:58:59,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:58:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 5] imperfect sequences [] total 11 [2021-10-13 06:58:59,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346319287] [2021-10-13 06:58:59,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 06:58:59,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:58:59,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 06:58:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2021-10-13 06:58:59,185 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 06:59:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:59:02,350 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-13 06:59:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 06:59:02,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 06:59:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:59:02,352 INFO L225 Difference]: With dead ends: 26 [2021-10-13 06:59:02,352 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 06:59:02,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5109.6ms TimeCoverageRelationStatistics Valid=104, Invalid=237, Unknown=1, NotChecked=0, Total=342 [2021-10-13 06:59:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 06:59:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2021-10-13 06:59:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 06:59:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 06:59:02,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-10-13 06:59:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:59:02,358 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 06:59:02,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 06:59:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-13 06:59:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:59:02,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:02,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:59:02,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:02,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:02,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:59:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2042132272, now seen corresponding path program 1 times [2021-10-13 06:59:02,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:02,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478950251] [2021-10-13 06:59:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:02,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:02,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:02,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:02,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:59:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:59:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:04,271 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 06:59:04,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:06,475 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 06:59:06,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:59:06,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478950251] [2021-10-13 06:59:06,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478950251] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:59:06,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:59:06,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-13 06:59:06,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945300468] [2021-10-13 06:59:06,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 06:59:06,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:59:06,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 06:59:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 06:59:06,479 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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 06:59:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:59:12,043 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-13 06:59:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 06:59:12,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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 06:59:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:59:12,043 INFO L225 Difference]: With dead ends: 19 [2021-10-13 06:59:12,044 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:59:12,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4124.5ms TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2021-10-13 06:59:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:59:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:59:12,045 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 06:59:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:59:12,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-13 06:59:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:59:12,045 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:59:12,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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 06:59:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:59:12,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:59:12,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:59:12,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:12,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:12,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:59:12,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:59:12,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:59:12,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:59:12,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:59:13,428 INFO L853 garLoopResultBuilder]: At program point L48-2(lines 48 51) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (exists ((ULTIMATE.start_main_~s~0 (_ BitVec 32))) (and (= (bvadd ULTIMATE.start_main_~d~0 (_ bv1 32)) (bvshl (_ bv1 32) ULTIMATE.start_main_~s~0)) (bvult ULTIMATE.start_main_~s~0 (_ bv31 32)))) (bvult ULTIMATE.start_main_~s~0 (_ bv31 32))) [2021-10-13 06:59:13,428 INFO L857 garLoopResultBuilder]: For program point L48-3(lines 48 51) no Hoare annotation was computed. [2021-10-13 06:59:13,429 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-10-13 06:59:13,429 INFO L860 garLoopResultBuilder]: At program point L44-1(lines 44 58) the Hoare annotation is: true [2021-10-13 06:59:13,429 INFO L857 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-10-13 06:59:13,429 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:59:13,429 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:59:13,429 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:59:13,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-13 06:59:13,430 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-10-13 06:59:13,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:59:13,430 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 54 56) no Hoare annotation was computed. [2021-10-13 06:59:13,430 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-13 06:59:13,431 INFO L853 garLoopResultBuilder]: At program point L46-2(lines 46 53) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~m~0)) (.cse0 (bvurem ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (or (= .cse0 ULTIMATE.start_main_~m~0) (bvugt ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0) .cse1) (exists ((ULTIMATE.start_main_~s~0 (_ BitVec 32))) (and (= (bvadd ULTIMATE.start_main_~d~0 (_ bv1 32)) (bvshl (_ bv1 32) ULTIMATE.start_main_~s~0)) (bvult ULTIMATE.start_main_~s~0 (_ bv31 32)))) (bvult ULTIMATE.start_main_~s~0 (_ bv31 32)) (or (not .cse1) (= .cse0 (_ bv0 32))))) [2021-10-13 06:59:13,431 INFO L857 garLoopResultBuilder]: For program point L46-3(lines 44 58) no Hoare annotation was computed. [2021-10-13 06:59:13,431 INFO L860 garLoopResultBuilder]: At program point L59(lines 36 60) the Hoare annotation is: true [2021-10-13 06:59:13,431 INFO L857 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-10-13 06:59:13,435 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:59:13,441 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,441 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,447 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,447 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,448 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,449 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,450 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,450 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:59:13 BoogieIcfgContainer [2021-10-13 06:59:13,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:59:13,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:59:13,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:59:13,452 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:59:13,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:54" (3/4) ... [2021-10-13 06:59:13,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:59:13,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 06:59:13,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:59:13,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:59:13,466 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:59:13,498 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((cond == 1bv32 && ((~bvurem32(n, d) == m || ~bvugt32(n, d)) || d == m)) && (\exists ULTIMATE.start_main_~s~0 : bv32 :: ~bvadd64(d, 1bv32) == ~bvshl32(1bv32, ULTIMATE.start_main_~s~0) && ~bvult32(ULTIMATE.start_main_~s~0, 31bv32))) && ~bvult32(s, 31bv32)) && (!(d == m) || ~bvurem32(n, d) == 0bv32) [2021-10-13 06:59:13,506 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (cond == 1bv32 && (\exists ULTIMATE.start_main_~s~0 : bv32 :: ~bvadd64(d, 1bv32) == ~bvshl32(1bv32, ULTIMATE.start_main_~s~0) && ~bvult32(ULTIMATE.start_main_~s~0, 31bv32))) && ~bvult32(s, 31bv32) [2021-10-13 06:59:13,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:59:13,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:59:13,526 INFO L168 Benchmark]: Toolchain (without parser) took 19728.96 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 43.3 MB in the beginning and 62.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:13,531 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:13,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.15 ms. Allocated memory is still 67.1 MB. Free memory was 43.1 MB in the beginning and 50.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:13,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.32 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:13,533 INFO L168 Benchmark]: Boogie Preprocessor took 39.09 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 48.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:13,535 INFO L168 Benchmark]: RCFGBuilder took 301.07 ms. Allocated memory is still 67.1 MB. Free memory was 48.2 MB in the beginning and 38.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:13,536 INFO L168 Benchmark]: TraceAbstraction took 19029.28 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 27.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:13,537 INFO L168 Benchmark]: Witness Printer took 72.77 ms. Allocated memory is still 81.8 MB. Free memory was 27.3 MB in the beginning and 62.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:13,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.15 ms. Allocated memory is still 67.1 MB. Free memory was 43.1 MB in the beginning and 50.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.32 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.09 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 48.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 301.07 ms. Allocated memory is still 67.1 MB. Free memory was 48.2 MB in the beginning and 38.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19029.28 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 27.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 72.77 ms. Allocated memory is still 81.8 MB. Free memory was 27.3 MB in the beginning and 62.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 2.1 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_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~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: 21]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18959.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 13.0ms, AutomataDifference: 8788.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1169.5ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 111 SDslu, 25 SDs, 0 SdLazy, 128 SolverSat, 42 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3753.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 9234.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 62 HoareAnnotationTreeSize, 4 FomulaSimplifications, 223 FormulaSimplificationTreeSizeReduction, 68.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 1095.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 29.2ms SsaConstructionTime, 701.6ms SatisfiabilityAnalysisTime, 7299.1ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 8 QuantifiedInterpolants, 285 SizeOfPredicates, 16 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant [2021-10-13 06:59:13,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,558 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] Derived loop invariant: (cond == 1bv32 && (\exists ULTIMATE.start_main_~s~0 : bv32 :: ~bvadd64(d, 1bv32) == ~bvshl32(1bv32, ULTIMATE.start_main_~s~0) && ~bvult32(ULTIMATE.start_main_~s~0, 31bv32))) && ~bvult32(s, 31bv32) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant [2021-10-13 06:59:13,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,560 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-13 06:59:13,560 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] Derived loop invariant: (((cond == 1bv32 && ((~bvurem32(n, d) == m || ~bvugt32(n, d)) || d == m)) && (\exists ULTIMATE.start_main_~s~0 : bv32 :: ~bvadd64(d, 1bv32) == ~bvshl32(1bv32, ULTIMATE.start_main_~s~0) && ~bvult32(ULTIMATE.start_main_~s~0, 31bv32))) && ~bvult32(s, 31bv32)) && (!(d == m) || ~bvurem32(n, d) == 0bv32) - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 06:59:13,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4328d60c-b011-4757-b2a6-cb566b697724/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...