./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs --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_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs --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-5709675 [2021-10-16 01:59:47,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:47,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:47,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:47,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:47,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:47,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:47,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:47,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:47,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:47,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:47,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:47,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:47,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:47,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:47,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:47,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:47,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:47,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:47,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:47,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:47,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:47,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:47,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:47,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:47,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:47,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:47,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:47,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:47,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:47,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:47,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:47,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:47,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:47,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:47,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:47,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:47,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:47,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:47,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:47,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:47,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:47,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:47,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:47,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:47,904 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:47,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:47,904 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:47,905 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:47,905 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:47,905 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:47,905 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:47,906 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:47,907 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:47,907 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:47,907 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:47,908 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:47,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:47,909 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:47,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:47,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:47,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:47,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:47,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:47,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:47,910 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:47,910 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:47,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:47,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:47,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:47,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:47,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:47,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:47,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:47,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:47,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:47,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:47,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:47,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:47,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:47,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:47,916 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_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-10-16 01:59:48,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:48,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:48,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:48,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:48,258 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:48,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-16 01:59:48,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/94cff2323/099e28db86b04b17b8fa0f82da9756f0/FLAG8222294b1 [2021-10-16 01:59:48,837 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:48,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-16 01:59:48,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/94cff2323/099e28db86b04b17b8fa0f82da9756f0/FLAG8222294b1 [2021-10-16 01:59:49,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/94cff2323/099e28db86b04b17b8fa0f82da9756f0 [2021-10-16 01:59:49,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:49,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:49,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:49,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:49,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:49,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72de54f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49, skipping insertion in model container [2021-10-16 01:59:49,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:49,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:49,410 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_e503d397-91b3-4fbf-9eb1-57510996661d/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-16 01:59:49,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:49,461 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:49,478 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_e503d397-91b3-4fbf-9eb1-57510996661d/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-16 01:59:49,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:49,517 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:49,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49 WrapperNode [2021-10-16 01:59:49,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:49,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:49,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:49,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:49,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:49,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:49,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:49,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:49,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:49,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:49,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:49,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:49,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:49,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:49,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:49,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:50,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:50,052 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 01:59:50,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:50 BoogieIcfgContainer [2021-10-16 01:59:50,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:50,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:50,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:50,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:50,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:49" (1/3) ... [2021-10-16 01:59:50,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b42b5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:50, skipping insertion in model container [2021-10-16 01:59:50,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (2/3) ... [2021-10-16 01:59:50,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b42b5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:50, skipping insertion in model container [2021-10-16 01:59:50,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:50" (3/3) ... [2021-10-16 01:59:50,064 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-16 01:59:50,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:50,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:50,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:50,137 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 [2021-10-16 01:59:50,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:50,157 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) [2021-10-16 01:59:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 01:59:50,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:50,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 01:59:50,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash 96472452, now seen corresponding path program 1 times [2021-10-16 01:59:50,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:50,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548875370] [2021-10-16 01:59:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:50,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:50,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 01:59:50,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126772445] [2021-10-16 01:59:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:50,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:50,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:50,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:59:50,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 01:59:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:50,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 01:59:50,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:51,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:52,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:52,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548875370] [2021-10-16 01:59:52,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 01:59:52,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126772445] [2021-10-16 01:59:52,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-10-16 01:59:52,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2048915081] [2021-10-16 01:59:52,109 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-16 01:59:52,109 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 01:59:52,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 01:59:52,121 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 01:59:52,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 01:59:52,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,168 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:52,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 01:59:52,170 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:52,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 01:59:52,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-16 01:59:52,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 01:59:52,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 01:59:52,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:59:52,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:59:52,221 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:52,265 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 01:59:52,267 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 [2021-10-16 01:59:52,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 01:59:52,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 01:59:52,276 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:52,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 01:59:52,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:52,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 01:59:52,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 01:59:52,321 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:204, output treesize:89 [2021-10-16 01:59:52,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:52,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 01:59:52,544 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) [2021-10-16 01:59:52,549 INFO L168 Benchmark]: Toolchain (without parser) took 3371.89 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 56.7 MB in the beginning and 74.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:52,549 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:52,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.58 ms. Allocated memory is still 98.6 MB. Free memory was 56.6 MB in the beginning and 72.2 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:52,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.60 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:52,551 INFO L168 Benchmark]: Boogie Preprocessor took 48.48 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 69.8 MB in the end (delta: 834.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:52,551 INFO L168 Benchmark]: RCFGBuilder took 443.43 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 57.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:52,552 INFO L168 Benchmark]: TraceAbstraction took 2490.92 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 57.2 MB in the beginning and 74.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:52,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.58 ms. Allocated memory is still 98.6 MB. Free memory was 56.6 MB in the beginning and 72.2 MB in the end (delta: -15.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.60 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.48 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 69.8 MB in the end (delta: 834.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 443.43 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 57.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2490.92 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 57.2 MB in the beginning and 74.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_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. [2021-10-16 01:59:52,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:55,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:55,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:55,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:55,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:55,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:55,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:55,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:55,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:55,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:55,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:55,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:55,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:55,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:55,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:55,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:55,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:55,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:55,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:55,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:55,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:55,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:55,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:55,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:55,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:55,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:55,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:55,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:55,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:55,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:55,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:55,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:55,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:55,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:55,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:55,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:55,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:55,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:55,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:55,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:55,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:55,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:55,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:55,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:55,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:55,339 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:55,339 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:55,339 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:55,340 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:55,340 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:55,340 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:55,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:55,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:55,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:55,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:55,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:55,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:55,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:55,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:55,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:55,344 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:55,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:55,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:55,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:55,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:55,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:55,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:55,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:55,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:55,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:55,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:55,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:55,347 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:55,347 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:55,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:55,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:55,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:55,349 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_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-10-16 01:59:55,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:55,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:55,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:55,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:55,773 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:55,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-16 01:59:55,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/badf7a6ef/bd0565b9dd1946fcaaef0fde2d3e87f6/FLAGfb20e4a31 [2021-10-16 01:59:56,503 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:56,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-16 01:59:56,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/badf7a6ef/bd0565b9dd1946fcaaef0fde2d3e87f6/FLAGfb20e4a31 [2021-10-16 01:59:56,842 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/data/badf7a6ef/bd0565b9dd1946fcaaef0fde2d3e87f6 [2021-10-16 01:59:56,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:56,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:56,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:56,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:56,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:56,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1256b08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56, skipping insertion in model container [2021-10-16 01:59:56,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:56,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:57,024 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_e503d397-91b3-4fbf-9eb1-57510996661d/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-16 01:59:57,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:57,066 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:57,108 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_e503d397-91b3-4fbf-9eb1-57510996661d/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-16 01:59:57,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:57,136 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:57,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57 WrapperNode [2021-10-16 01:59:57,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:57,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:57,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:57,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:57,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:57,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:57,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:57,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:57,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:57,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:57,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:57,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:57,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (1/1) ... [2021-10-16 01:59:57,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:57,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:57,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:57,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:57,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:57,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:57,624 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 01:59:57,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:57 BoogieIcfgContainer [2021-10-16 01:59:57,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:57,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:57,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:57,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:57,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:56" (1/3) ... [2021-10-16 01:59:57,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b908aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:57, skipping insertion in model container [2021-10-16 01:59:57,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:57" (2/3) ... [2021-10-16 01:59:57,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b908aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:57, skipping insertion in model container [2021-10-16 01:59:57,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:57" (3/3) ... [2021-10-16 01:59:57,634 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-16 01:59:57,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:57,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:57,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:57,692 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 [2021-10-16 01:59:57,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:57,705 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) [2021-10-16 01:59:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 01:59:57,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:57,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:57,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1232845228, now seen corresponding path program 1 times [2021-10-16 01:59:57,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:57,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184428537] [2021-10-16 01:59:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:57,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:57,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:57,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:57,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:59:57,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:57,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:58,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:58,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184428537] [2021-10-16 01:59:58,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184428537] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:58,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:58,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:59:58,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307488315] [2021-10-16 01:59:58,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:58,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:58,083 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) [2021-10-16 01:59:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:58,099 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-10-16 01:59:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:58,101 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 [2021-10-16 01:59:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:58,110 INFO L225 Difference]: With dead ends: 31 [2021-10-16 01:59:58,110 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 01:59:58,113 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 [2021-10-16 01:59:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 01:59:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 01:59:58,141 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) [2021-10-16 01:59:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-16 01:59:58,144 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-10-16 01:59:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:58,144 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-16 01:59:58,145 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) [2021-10-16 01:59:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-16 01:59:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 01:59:58,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:58,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:58,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:58,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:58,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2042191854, now seen corresponding path program 1 times [2021-10-16 01:59:58,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:58,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122843079] [2021-10-16 01:59:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:58,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:58,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:58,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:58,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:59:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:58,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 01:59:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:59,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:02,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:02,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122843079] [2021-10-16 02:00:02,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122843079] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:02,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:02,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 5] imperfect sequences [] total 11 [2021-10-16 02:00:02,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615505894] [2021-10-16 02:00:02,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:00:02,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:00:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2021-10-16 02:00:02,542 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) [2021-10-16 02:00:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:06,606 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-16 02:00:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:00:06,606 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 [2021-10-16 02:00:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:06,607 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:00:06,607 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:00:06,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5872.8ms TimeCoverageRelationStatistics Valid=104, Invalid=237, Unknown=1, NotChecked=0, Total=342 [2021-10-16 02:00:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:00:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2021-10-16 02:00:06,613 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) [2021-10-16 02:00:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-16 02:00:06,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-10-16 02:00:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:06,614 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-16 02:00:06,614 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) [2021-10-16 02:00:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-16 02:00:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:00:06,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:06,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:06,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:06,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:06,839 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:06,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2042132272, now seen corresponding path program 1 times [2021-10-16 02:00:06,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:06,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861337880] [2021-10-16 02:00:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:06,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:06,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:06,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:06,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:00:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:07,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:00:07,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:09,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:12,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:12,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861337880] [2021-10-16 02:00:12,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861337880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:12,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:12,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-16 02:00:12,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829620010] [2021-10-16 02:00:12,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 02:00:12,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 02:00:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:00:12,515 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) [2021-10-16 02:00:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:19,895 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-16 02:00:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:00:19,895 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 [2021-10-16 02:00:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:19,896 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:00:19,896 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:00:19,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6236.1ms TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:00:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:00:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:00:19,897 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) [2021-10-16 02:00:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:00:19,897 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-16 02:00:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:19,898 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:00:19,898 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) [2021-10-16 02:00:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:00:19,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:00:19,901 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:19,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:20,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:20,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:00:20,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:20,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:20,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:20,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,561 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))) [2021-10-16 02:00:21,561 INFO L857 garLoopResultBuilder]: For program point L48-3(lines 48 51) no Hoare annotation was computed. [2021-10-16 02:00:21,562 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 58) no Hoare annotation was computed. [2021-10-16 02:00:21,562 INFO L860 garLoopResultBuilder]: At program point L44-1(lines 44 58) the Hoare annotation is: true [2021-10-16 02:00:21,562 INFO L857 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-10-16 02:00:21,562 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:00:21,562 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:00:21,562 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:00:21,563 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 02:00:21,563 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-10-16 02:00:21,563 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:00:21,563 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 54 56) no Hoare annotation was computed. [2021-10-16 02:00:21,563 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-16 02:00:21,564 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))))) [2021-10-16 02:00:21,564 INFO L857 garLoopResultBuilder]: For program point L46-3(lines 44 58) no Hoare annotation was computed. [2021-10-16 02:00:21,564 INFO L860 garLoopResultBuilder]: At program point L59(lines 36 60) the Hoare annotation is: true [2021-10-16 02:00:21,564 INFO L857 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-10-16 02:00:21,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:00:21,575 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,576 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,582 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,582 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,584 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,584 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,585 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,585 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:00:21 BoogieIcfgContainer [2021-10-16 02:00:21,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:00:21,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:00:21,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:00:21,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:00:21,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:57" (3/4) ... [2021-10-16 02:00:21,591 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:00:21,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:00:21,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:00:21,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:21,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:21,628 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) [2021-10-16 02:00:21,629 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) [2021-10-16 02:00:21,655 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:00:21,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:00:21,662 INFO L168 Benchmark]: Toolchain (without parser) took 24808.90 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 42.5 MB in the beginning and 41.9 MB in the end (delta: 586.9 kB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,663 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory is still 43.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:21,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.98 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 44.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.94 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:21,664 INFO L168 Benchmark]: Boogie Preprocessor took 26.72 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 42.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,665 INFO L168 Benchmark]: RCFGBuilder took 421.67 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 33.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,666 INFO L168 Benchmark]: TraceAbstraction took 23959.17 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 32.5 MB in the beginning and 44.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,666 INFO L168 Benchmark]: Witness Printer took 67.90 ms. Allocated memory is still 88.1 MB. Free memory was 44.9 MB in the beginning and 41.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,676 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 62.9 MB. Free memory is still 43.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.98 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 44.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.94 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.72 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 42.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 421.67 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 33.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23959.17 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 32.5 MB in the beginning and 44.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.90 ms. Allocated memory is still 88.1 MB. Free memory was 44.9 MB in the beginning and 41.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 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: 23884.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 11510.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1458.3ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 111 SDslu, 25 SDs, 0 SdLazy, 128 SolverSat, 42 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4545.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 12109.1ms 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, 88.3ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 1362.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 37.2ms SsaConstructionTime, 867.9ms SatisfiabilityAnalysisTime, 9090.9ms 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 [2021-10-16 02:00:21,689 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,690 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,690 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,690 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 [2021-10-16 02:00:21,694 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,694 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,695 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0,QUANTIFIED] [2021-10-16 02:00:21,696 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! [2021-10-16 02:00:21,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e503d397-91b3-4fbf-9eb1-57510996661d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...