./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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 2d5e1e94b71e060a77443e2afd511bc50cc1649d ................................................................................................................................................................................................................................................................................................................................................................................................. 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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 2d5e1e94b71e060a77443e2afd511bc50cc1649d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:29:34,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:29:34,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:29:34,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:29:34,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:29:34,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:29:34,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:29:34,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:29:34,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:29:34,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:29:34,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:29:34,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:29:34,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:29:34,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:29:34,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:29:34,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:29:34,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:29:34,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:29:34,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:29:34,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:29:34,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:29:34,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:29:34,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:29:34,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:29:34,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:29:34,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:29:34,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:29:34,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:29:34,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:29:34,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:29:34,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:29:34,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:29:34,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:29:34,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:29:34,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:29:34,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:29:34,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:29:34,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:29:34,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:29:34,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:29:34,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:29:34,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:29:34,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:29:34,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:29:34,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:29:34,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:29:34,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:29:34,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:29:34,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:29:34,804 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:29:34,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:29:34,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:29:34,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:29:34,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:29:34,814 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:29:34,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:29:34,815 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:29:34,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:29:34,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:29:34,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:29:34,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:29:34,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:29:34,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:29:34,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:29:34,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:29:34,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:29:34,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:29:34,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:29:34,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:29:34,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:29:34,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:29:34,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:29:34,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:34,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:29:34,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:29:34,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:29:34,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:29:34,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:29:34,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:29:34,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:29:34,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:29:34,825 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2021-10-16 02:29:35,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:29:35,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:29:35,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:29:35,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:29:35,216 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:29:35,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-16 02:29:35,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/9e688e5cf/286436d3abab46aa9e4a87951195122d/FLAG8bac9132e [2021-10-16 02:29:35,885 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:29:35,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-16 02:29:35,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/9e688e5cf/286436d3abab46aa9e4a87951195122d/FLAG8bac9132e [2021-10-16 02:29:36,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/9e688e5cf/286436d3abab46aa9e4a87951195122d [2021-10-16 02:29:36,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:29:36,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:29:36,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:36,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:29:36,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:29:36,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133f0124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36, skipping insertion in model container [2021-10-16 02:29:36,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:29:36,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:29:36,471 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-16 02:29:36,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:36,506 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:29:36,520 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-16 02:29:36,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:36,545 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:29:36,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36 WrapperNode [2021-10-16 02:29:36,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:36,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:36,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:29:36,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:29:36,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:36,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:29:36,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:29:36,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:29:36,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:29:36,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:29:36,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:29:36,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:29:36,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (1/1) ... [2021-10-16 02:29:36,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:36,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:36,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:29:36,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:29:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:29:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:29:36,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:29:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:29:37,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:29:37,269 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-10-16 02:29:37,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:37 BoogieIcfgContainer [2021-10-16 02:29:37,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:29:37,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:29:37,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:29:37,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:29:37,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:29:36" (1/3) ... [2021-10-16 02:29:37,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c8129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:37, skipping insertion in model container [2021-10-16 02:29:37,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:36" (2/3) ... [2021-10-16 02:29:37,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c8129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:37, skipping insertion in model container [2021-10-16 02:29:37,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:37" (3/3) ... [2021-10-16 02:29:37,306 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2021-10-16 02:29:37,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:29:37,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-16 02:29:37,366 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:29:37,375 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 02:29:37,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-16 02:29:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 75 states have internal predecessors, (101), 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 02:29:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:29:37,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:37,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:29:37,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:37,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash -255523899, now seen corresponding path program 1 times [2021-10-16 02:29:37,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:37,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335035263] [2021-10-16 02:29:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:37,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:37,671 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 02:29:37,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:37,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335035263] [2021-10-16 02:29:37,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335035263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:37,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:37,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:29:37,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096382497] [2021-10-16 02:29:37,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:29:37,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:29:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:29:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:29:37,703 INFO L87 Difference]: Start difference. First operand has 76 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 75 states have internal predecessors, (101), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:37,959 INFO L93 Difference]: Finished difference Result 140 states and 191 transitions. [2021-10-16 02:29:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:29:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:29:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:37,974 INFO L225 Difference]: With dead ends: 140 [2021-10-16 02:29:37,974 INFO L226 Difference]: Without dead ends: 62 [2021-10-16 02:29:37,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:29:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-16 02:29:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-10-16 02:29:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.22) internal successors, (61), 57 states have internal predecessors, (61), 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 02:29:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-16 02:29:38,078 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 6 [2021-10-16 02:29:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:38,079 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-16 02:29:38,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-16 02:29:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:29:38,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:38,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:38,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:29:38,081 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash -745175224, now seen corresponding path program 1 times [2021-10-16 02:29:38,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:38,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751274006] [2021-10-16 02:29:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:38,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:38,208 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 02:29:38,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:38,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751274006] [2021-10-16 02:29:38,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751274006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:38,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:38,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:29:38,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959421635] [2021-10-16 02:29:38,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:29:38,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:29:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:29:38,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:29:38,229 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:38,367 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2021-10-16 02:29:38,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:29:38,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:29:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:38,369 INFO L225 Difference]: With dead ends: 74 [2021-10-16 02:29:38,369 INFO L226 Difference]: Without dead ends: 55 [2021-10-16 02:29:38,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:29:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-16 02:29:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-16 02:29:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.1875) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-10-16 02:29:38,382 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 8 [2021-10-16 02:29:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:38,382 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-10-16 02:29:38,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-10-16 02:29:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:29:38,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:38,384 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:38,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:29:38,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1867865087, now seen corresponding path program 1 times [2021-10-16 02:29:38,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:29:38,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368713109] [2021-10-16 02:29:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:38,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:29:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:38,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:29:38,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368713109] [2021-10-16 02:29:38,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368713109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:29:38,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94674923] [2021-10-16 02:29:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:38,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:38,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:38,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:29:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:38,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:29:38,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:39,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:29:39,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94674923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:39,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843592310] [2021-10-16 02:29:39,424 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-16 02:29:39,425 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:29:39,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:29:39,437 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:29:39,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:29:39,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,481 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:29:39,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:29:39,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:29:39,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:29:39,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-16 02:29:39,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:29:39,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:29:39,564 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:29:39,565 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 02:29:39,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:29:39,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:29:39,578 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:29:39,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:29:39,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:29:39,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-16 02:29:39,628 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:29:39,631 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:82 [2021-10-16 02:29:39,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:39,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:39,861 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_8| 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 02:29:39,865 INFO L168 Benchmark]: Toolchain (without parser) took 3641.34 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 71.5 MB in the beginning and 96.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 955.9 kB. Max. memory is 16.1 GB. [2021-10-16 02:29:39,866 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 111.1 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:29:39,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.64 ms. Allocated memory is still 111.1 MB. Free memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:39,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 83.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:39,868 INFO L168 Benchmark]: Boogie Preprocessor took 32.91 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 82.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:29:39,869 INFO L168 Benchmark]: RCFGBuilder took 639.51 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 68.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:29:39,870 INFO L168 Benchmark]: TraceAbstraction took 2574.53 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 67.9 MB in the beginning and 96.3 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:29:39,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 111.1 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.64 ms. Allocated memory is still 111.1 MB. Free memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 83.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.91 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 82.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 639.51 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 68.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2574.53 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 67.9 MB in the beginning and 96.3 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: 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 02:29:39,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:29:42,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:29:42,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:29:42,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:29:42,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:29:42,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:29:42,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:29:42,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:29:42,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:29:42,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:29:42,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:29:42,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:29:42,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:29:42,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:29:42,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:29:42,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:29:42,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:29:42,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:29:42,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:29:42,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:29:42,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:29:42,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:29:42,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:29:42,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:29:42,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:29:42,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:29:42,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:29:42,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:29:42,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:29:42,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:29:42,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:29:42,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:29:42,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:29:42,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:29:42,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:29:42,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:29:43,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:29:43,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:29:43,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:29:43,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:29:43,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:29:43,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:29:43,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:29:43,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:29:43,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:29:43,046 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:29:43,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:29:43,047 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:29:43,047 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:29:43,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:29:43,048 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:29:43,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:29:43,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:29:43,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:29:43,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:29:43,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:29:43,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:29:43,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:29:43,050 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:29:43,051 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:29:43,051 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:29:43,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:29:43,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:29:43,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:29:43,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:29:43,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:29:43,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:29:43,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:29:43,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:43,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:29:43,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:29:43,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:29:43,054 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:29:43,055 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:29:43,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:29:43,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:29:43,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:29:43,056 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5e1e94b71e060a77443e2afd511bc50cc1649d [2021-10-16 02:29:43,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:29:43,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:29:43,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:29:43,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:29:43,542 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:29:43,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-16 02:29:43,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/994e8e1bd/af2156d2eb8b4052959fd4472bd55230/FLAG96f32b6fd [2021-10-16 02:29:44,268 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:29:44,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-10-16 02:29:44,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/994e8e1bd/af2156d2eb8b4052959fd4472bd55230/FLAG96f32b6fd [2021-10-16 02:29:44,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/data/994e8e1bd/af2156d2eb8b4052959fd4472bd55230 [2021-10-16 02:29:44,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:29:44,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:29:44,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:44,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:29:44,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:29:44,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1e7c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44, skipping insertion in model container [2021-10-16 02:29:44,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:29:44,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:29:44,547 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-16 02:29:44,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:44,623 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:29:44,639 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_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-10-16 02:29:44,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:29:44,667 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:29:44,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44 WrapperNode [2021-10-16 02:29:44,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:29:44,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:44,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:29:44,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:29:44,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:29:44,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:29:44,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:29:44,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:29:44,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:29:44,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:29:44,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:29:44,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:29:44,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (1/1) ... [2021-10-16 02:29:44,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:29:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:44,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:29:44,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:29:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:29:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:29:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:29:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:29:45,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:29:45,432 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-10-16 02:29:45,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:45 BoogieIcfgContainer [2021-10-16 02:29:45,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:29:45,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:29:45,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:29:45,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:29:45,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:29:44" (1/3) ... [2021-10-16 02:29:45,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:45, skipping insertion in model container [2021-10-16 02:29:45,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:29:44" (2/3) ... [2021-10-16 02:29:45,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:29:45, skipping insertion in model container [2021-10-16 02:29:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:45" (3/3) ... [2021-10-16 02:29:45,445 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2021-10-16 02:29:45,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:29:45,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-16 02:29:45,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:29:45,548 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 02:29:45,549 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-16 02:29:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 79 states have internal predecessors, (107), 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 02:29:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:29:45,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:45,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:45,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:45,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash 119561572, now seen corresponding path program 1 times [2021-10-16 02:29:45,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:45,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226972521] [2021-10-16 02:29:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:45,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:45,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:45,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:29:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:45,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:29:45,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:45,829 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 02:29:45,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:45,855 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 02:29:45,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:45,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226972521] [2021-10-16 02:29:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226972521] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:45,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:45,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:29:45,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585594639] [2021-10-16 02:29:45,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:29:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:29:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:29:45,884 INFO L87 Difference]: Start difference. First operand has 80 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 79 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:45,919 INFO L93 Difference]: Finished difference Result 156 states and 209 transitions. [2021-10-16 02:29:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:29:45,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:29:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:45,932 INFO L225 Difference]: With dead ends: 156 [2021-10-16 02:29:45,932 INFO L226 Difference]: Without dead ends: 76 [2021-10-16 02:29:45,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 02:29:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-16 02:29:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-16 02:29:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 75 states have internal predecessors, (79), 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 02:29:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-10-16 02:29:45,981 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 8 [2021-10-16 02:29:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:45,982 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-10-16 02:29:45,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:29:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-10-16 02:29:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:29:45,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:45,984 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:46,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:46,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:46,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash 119567532, now seen corresponding path program 1 times [2021-10-16 02:29:46,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:46,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907819805] [2021-10-16 02:29:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:46,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:46,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:46,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:29:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:46,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:29:46,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:46,365 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 02:29:46,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:46,435 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 02:29:46,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:46,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907819805] [2021-10-16 02:29:46,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907819805] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:46,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:46,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:29:46,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242696598] [2021-10-16 02:29:46,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:29:46,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:29:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:29:46,441 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:29:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:46,802 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2021-10-16 02:29:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:29:46,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:29:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:46,808 INFO L225 Difference]: With dead ends: 161 [2021-10-16 02:29:46,808 INFO L226 Difference]: Without dead ends: 147 [2021-10-16 02:29:46,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:29:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-16 02:29:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 106. [2021-10-16 02:29:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 105 states have internal predecessors, (119), 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 02:29:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-10-16 02:29:46,851 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 8 [2021-10-16 02:29:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:46,852 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-10-16 02:29:46,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:29:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-10-16 02:29:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:29:46,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:46,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:46,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:47,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:47,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1059562897, now seen corresponding path program 1 times [2021-10-16 02:29:47,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:47,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234783589] [2021-10-16 02:29:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:47,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:47,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:47,070 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:47,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:29:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:47,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:29:47,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:47,346 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 02:29:47,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:47,479 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 02:29:47,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:47,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234783589] [2021-10-16 02:29:47,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234783589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:29:47,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:29:47,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:29:47,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089534674] [2021-10-16 02:29:47,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:29:47,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:29:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:29:47,484 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 02:29:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:48,224 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2021-10-16 02:29:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:29:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 02:29:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:48,227 INFO L225 Difference]: With dead ends: 145 [2021-10-16 02:29:48,227 INFO L226 Difference]: Without dead ends: 105 [2021-10-16 02:29:48,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 214.1ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:29:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-16 02:29:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2021-10-16 02:29:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 88 states have internal predecessors, (96), 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 02:29:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2021-10-16 02:29:48,247 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 10 [2021-10-16 02:29:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:48,247 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2021-10-16 02:29:48,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 02:29:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2021-10-16 02:29:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:29:48,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:48,250 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:48,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:48,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:29:48,461 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1370730866, now seen corresponding path program 1 times [2021-10-16 02:29:48,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:48,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067764893] [2021-10-16 02:29:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:48,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:48,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:48,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:48,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:29:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:48,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:29:48,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:48,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:48,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:48,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067764893] [2021-10-16 02:29:48,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067764893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:48,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1270444934] [2021-10-16 02:29:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:48,869 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:29:48,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:29:48,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:29:48,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:29:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:49,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:29:49,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:49,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:49,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1270444934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:49,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042814255] [2021-10-16 02:29:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:49,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:49,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:49,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:29:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:49,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:29:49,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:49,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:49,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042814255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:49,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:29:49,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 9] total 16 [2021-10-16 02:29:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619052548] [2021-10-16 02:29:49,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:29:49,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:29:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:29:49,872 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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 02:29:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:51,040 INFO L93 Difference]: Finished difference Result 267 states and 301 transitions. [2021-10-16 02:29:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 02:29:51,041 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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 23 [2021-10-16 02:29:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:51,045 INFO L225 Difference]: With dead ends: 267 [2021-10-16 02:29:51,045 INFO L226 Difference]: Without dead ends: 257 [2021-10-16 02:29:51,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 633.0ms TimeCoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2021-10-16 02:29:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-16 02:29:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 191. [2021-10-16 02:29:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 181 states have (on average 1.2486187845303867) internal successors, (226), 190 states have internal predecessors, (226), 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 02:29:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2021-10-16 02:29:51,077 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 23 [2021-10-16 02:29:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:51,078 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2021-10-16 02:29:51,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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 02:29:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2021-10-16 02:29:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:29:51,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:51,081 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:51,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:51,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-16 02:29:51,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-16 02:29:51,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:51,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:29:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:29:51,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1282440907, now seen corresponding path program 1 times [2021-10-16 02:29:51,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:29:51,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070936620] [2021-10-16 02:29:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:51,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:29:51,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:29:51,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:29:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:29:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:51,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:29:51,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:52,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:29:52,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:29:52,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070936620] [2021-10-16 02:29:52,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070936620] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:52,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1566764524] [2021-10-16 02:29:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:52,767 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:29:52,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:29:52,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:29:52,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:29:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:53,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:29:53,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:53,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:54,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1566764524] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:54,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953858838] [2021-10-16 02:29:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:29:54,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:29:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:29:54,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:29:54,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:29:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:29:54,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:29:54,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:29:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:55,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:29:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:29:56,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953858838] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:29:56,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:29:56,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 10, 9, 12, 13] total 35 [2021-10-16 02:29:56,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585723910] [2021-10-16 02:29:56,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-16 02:29:56,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:29:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-16 02:29:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2021-10-16 02:29:56,807 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 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 02:29:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:29:59,447 INFO L93 Difference]: Finished difference Result 195 states and 230 transitions. [2021-10-16 02:29:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:29:59,448 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 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 25 [2021-10-16 02:29:59,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:29:59,449 INFO L225 Difference]: With dead ends: 195 [2021-10-16 02:29:59,449 INFO L226 Difference]: Without dead ends: 177 [2021-10-16 02:29:59,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2685.8ms TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2021-10-16 02:29:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-16 02:29:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-10-16 02:29:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.1395348837209303) internal successors, (196), 176 states have internal predecessors, (196), 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 02:29:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 196 transitions. [2021-10-16 02:29:59,487 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 196 transitions. Word has length 25 [2021-10-16 02:29:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:29:59,488 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 196 transitions. [2021-10-16 02:29:59,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 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 02:29:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 196 transitions. [2021-10-16 02:29:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-16 02:29:59,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:29:59,496 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-16 02:29:59,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:59,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:29:59,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:00,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:00,108 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-16 02:30:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:00,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1346007246, now seen corresponding path program 2 times [2021-10-16 02:30:00,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:30:00,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729001479] [2021-10-16 02:30:00,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:30:00,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:30:00,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:30:00,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:30:00,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:30:00,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:30:00,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:30:00,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:30:00,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:00,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:30:01,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729001479] [2021-10-16 02:30:01,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729001479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:01,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1189091516] [2021-10-16 02:30:01,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:30:01,096 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:01,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:30:01,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:30:01,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:30:01,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:30:01,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:30:01,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:30:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:01,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1189091516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:01,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874144357] [2021-10-16 02:30:01,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:30:01,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:30:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:01,948 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:30:01,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:30:02,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:30:02,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:30:02,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:30:02,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:30:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:03,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:30:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-16 02:30:03,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874144357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:30:03,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:30:03,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 17, 9] total 33 [2021-10-16 02:30:03,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520522570] [2021-10-16 02:30:03,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-16 02:30:03,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:30:03,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-16 02:30:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2021-10-16 02:30:03,605 INFO L87 Difference]: Start difference. First operand 177 states and 196 transitions. Second operand has 33 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 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 02:30:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:07,187 INFO L93 Difference]: Finished difference Result 388 states and 463 transitions. [2021-10-16 02:30:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-16 02:30:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 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 51 [2021-10-16 02:30:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:07,188 INFO L225 Difference]: With dead ends: 388 [2021-10-16 02:30:07,189 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:30:07,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 2073.6ms TimeCoverageRelationStatistics Valid=1326, Invalid=3366, Unknown=0, NotChecked=0, Total=4692 [2021-10-16 02:30:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:30:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:30:07,194 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 02:30:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:30:07,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-10-16 02:30:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:07,195 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:30:07,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 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 02:30:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:30:07,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:30:07,199 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,201 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,201 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,201 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,202 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,202 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,202 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,202 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:07,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:07,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:30:07,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-16 02:30:07,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:30:07,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:30:07,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:07,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:07,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:08,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:09,854 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,854 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,854 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,855 INFO L853 garLoopResultBuilder]: At program point L18-26(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,855 INFO L853 garLoopResultBuilder]: At program point L18-29(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,855 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L853 garLoopResultBuilder]: At program point L18-32(lines 17 22) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,856 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,857 INFO L853 garLoopResultBuilder]: At program point L18-38(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,857 INFO L857 garLoopResultBuilder]: For program point L19-8(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,857 INFO L857 garLoopResultBuilder]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,857 INFO L857 garLoopResultBuilder]: For program point L19-9(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,857 INFO L857 garLoopResultBuilder]: For program point L19-10(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,858 INFO L853 garLoopResultBuilder]: At program point L18-41(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,858 INFO L857 garLoopResultBuilder]: For program point L19-11(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,858 INFO L857 garLoopResultBuilder]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,859 INFO L857 garLoopResultBuilder]: For program point L19-12(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,859 INFO L857 garLoopResultBuilder]: For program point L19-13(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,859 INFO L853 garLoopResultBuilder]: At program point L18-44(lines 17 22) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)) [2021-10-16 02:30:09,859 INFO L857 garLoopResultBuilder]: For program point L19-14(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,859 INFO L857 garLoopResultBuilder]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,860 INFO L857 garLoopResultBuilder]: For program point L19-15(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,860 INFO L860 garLoopResultBuilder]: At program point L18-47(lines 17 22) the Hoare annotation is: true [2021-10-16 02:30:09,860 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:30:09,860 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,860 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 68) no Hoare annotation was computed. [2021-10-16 02:30:09,861 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 54 68) no Hoare annotation was computed. [2021-10-16 02:30:09,861 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2021-10-16 02:30:09,861 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,861 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-10-16 02:30:09,862 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,862 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:30:09,862 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,862 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 63) no Hoare annotation was computed. [2021-10-16 02:30:09,862 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,862 INFO L860 garLoopResultBuilder]: At program point L76(lines 24 77) the Hoare annotation is: true [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-10-16 02:30:09,863 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,864 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,864 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,864 INFO L853 garLoopResultBuilder]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0)) [2021-10-16 02:30:09,864 INFO L857 garLoopResultBuilder]: For program point L48-3(lines 48 72) no Hoare annotation was computed. [2021-10-16 02:30:09,864 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:30:09,865 INFO L853 garLoopResultBuilder]: At program point L32-2(lines 32 44) the Hoare annotation is: (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0)) (and (= ULTIMATE.start_main_~t~0 (_ bv0 32)) (bvsge (bvadd ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (_ bv1 32)))) [2021-10-16 02:30:09,865 INFO L857 garLoopResultBuilder]: For program point L32-3(lines 32 44) no Hoare annotation was computed. [2021-10-16 02:30:09,865 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,866 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 53) no Hoare annotation was computed. [2021-10-16 02:30:09,866 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 68) no Hoare annotation was computed. [2021-10-16 02:30:09,867 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 37) no Hoare annotation was computed. [2021-10-16 02:30:09,867 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:30:09,867 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,868 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~t~0 (_ bv0 32)) .cse0 (bvsge (bvadd ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) (_ bv1 32))) (and (bvsge ULTIMATE.start_main_~tagbuf_len~0 (_ bv1 32)) .cse0 (bvsle ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~tagbuf_len~0)))) [2021-10-16 02:30:09,868 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,868 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,869 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,869 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,870 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,870 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,870 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~t~0 (_ bv1 32)))) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvsle (_ bv0 32) ULTIMATE.start_main_~t~0) (bvsle .cse0 ULTIMATE.start_main_~tagbuf_len~0) (bvsle (_ bv0 32) .cse0))) [2021-10-16 02:30:09,870 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:30:09,876 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:30:09,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:30:09 BoogieIcfgContainer [2021-10-16 02:30:09,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:30:09,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:30:09,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:30:09,945 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:30:09,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:29:45" (3/4) ... [2021-10-16 02:30:09,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:30:09,973 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-16 02:30:09,976 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:30:09,977 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:30:09,977 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:30:10,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:30:10,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:30:10,066 INFO L168 Benchmark]: Toolchain (without parser) took 25754.59 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.1 MB in the beginning and 55.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,067 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:30:10,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.34 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 33.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.12 ms. Allocated memory is still 54.5 MB. Free memory was 33.6 MB in the beginning and 31.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,069 INFO L168 Benchmark]: Boogie Preprocessor took 56.10 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 30.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,070 INFO L168 Benchmark]: RCFGBuilder took 631.28 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.3 MB in the beginning and 42.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,070 INFO L168 Benchmark]: TraceAbstraction took 24506.80 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 42.0 MB in the beginning and 59.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,071 INFO L168 Benchmark]: Witness Printer took 120.61 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 55.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:10,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.34 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 33.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.12 ms. Allocated memory is still 54.5 MB. Free memory was 33.6 MB in the beginning and 31.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.10 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 30.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 631.28 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.3 MB in the beginning and 42.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24506.80 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 42.0 MB in the beginning and 59.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * Witness Printer took 120.61 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 55.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 80 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 24343.1ms, OverallIterations: 6, TraceHistogramMax: 7, EmptinessCheckTime: 38.4ms, AutomataDifference: 8594.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2036.1ms, InitialAbstractionConstructionTime: 20.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 327 SDtfs, 2828 SDslu, 1489 SDs, 0 SdLazy, 2844 SolverSat, 1909 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4793.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 741 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2397 ImplicationChecksByTransitivity, 5672.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=4, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 157.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 123 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 156 NumberOfFragments, 225 HoareAnnotationTreeSize, 16 FomulaSimplifications, 7834 FormulaSimplificationTreeSizeReduction, 567.1ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 2266 FormulaSimplificationTreeSizeReductionInter, 1457.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 122.5ms SsaConstructionTime, 352.5ms SatisfiabilityAnalysisTime, 8716.5ms InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 622 ConstructedInterpolants, 1 QuantifiedInterpolants, 3071 SizeOfPredicates, 53 NumberOfNonLiveVariables, 644 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 164/978 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 16 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len)) && ~bvsle32(0bv32, t) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvsge32(tagbuf_len, 1bv32) && !(cond == 0bv32)) && ~bvsle32(t, tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(t, tagbuf_len)) && ~bvsle32(0bv32, t)) || (t == 0bv32 && ~bvsge32(~bvadd64(tagbuf_len, 1bv32), 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((t == 0bv32 && cond == 1bv32) && ~bvsge32(~bvadd64(tagbuf_len, 1bv32), 1bv32)) || ((~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvsge32(tagbuf_len, 1bv32) && cond == 1bv32) && ~bvsle32(t, tagbuf_len) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((cond == 1bv32 && ~bvsle32(0bv32, t)) && ~bvsle32(~bvadd64(t, 1bv32), tagbuf_len)) && ~bvsle32(0bv32, ~bvadd64(t, 1bv32)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:30:10,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c9890f3-3cd3-42ec-b0f4-f85041bc7583/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...