./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH --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 61e163c7079e2ec105ad677de51f27ac7eccc49ef492909c4fa51ebc02ead9b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:30:59,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:30:59,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:30:59,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:30:59,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:30:59,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:30:59,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:30:59,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:30:59,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:30:59,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:30:59,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:30:59,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:30:59,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:30:59,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:30:59,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:30:59,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:30:59,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:30:59,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:30:59,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:30:59,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:30:59,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:30:59,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:30:59,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:30:59,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:30:59,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:30:59,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:30:59,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:30:59,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:30:59,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:30:59,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:30:59,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:30:59,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:30:59,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:30:59,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:30:59,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:30:59,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:30:59,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:30:59,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:30:59,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:30:59,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:30:59,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:30:59,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:30:59,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:30:59,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:30:59,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:30:59,821 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:30:59,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:30:59,822 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:30:59,822 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:30:59,822 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:30:59,829 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:30:59,829 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:30:59,830 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:30:59,831 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:30:59,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:30:59,831 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:30:59,831 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:30:59,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:30:59,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:30:59,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:30:59,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:30:59,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:30:59,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:30:59,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:30:59,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:30:59,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:30:59,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:30:59,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:30:59,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:30:59,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:30:59,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:30:59,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:30:59,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:30:59,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:30:59,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:30:59,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:30:59,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:30:59,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:30:59,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:30:59,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:30:59,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:30:59,840 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_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61e163c7079e2ec105ad677de51f27ac7eccc49ef492909c4fa51ebc02ead9b7 [2021-11-03 04:31:00,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:31:00,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:31:00,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:31:00,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:31:00,197 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:31:00,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-regression/test24-1.c [2021-11-03 04:31:00,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/data/f9ff95f66/680eba18f349405aa527b593d9e05889/FLAGf7d01140b [2021-11-03 04:31:00,706 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:31:00,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/sv-benchmarks/c/ldv-regression/test24-1.c [2021-11-03 04:31:00,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/data/f9ff95f66/680eba18f349405aa527b593d9e05889/FLAGf7d01140b [2021-11-03 04:31:01,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/data/f9ff95f66/680eba18f349405aa527b593d9e05889 [2021-11-03 04:31:01,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:31:01,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:31:01,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:31:01,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:31:01,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:31:01,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dff7e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01, skipping insertion in model container [2021-11-03 04:31:01,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:31:01,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:31:01,318 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_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-11-03 04:31:01,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:31:01,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:31:01,367 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_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-11-03 04:31:01,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:31:01,381 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:31:01,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01 WrapperNode [2021-11-03 04:31:01,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:31:01,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:31:01,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:31:01,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:31:01,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:31:01,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:31:01,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:31:01,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:31:01,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:31:01,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:31:01,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:31:01,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:31:01,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (1/1) ... [2021-11-03 04:31:01,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:31:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:31:01,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:31:01,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:31:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:31:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:31:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:31:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:31:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:31:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:31:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:31:01,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:31:01,763 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:31:01,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:31:01 BoogieIcfgContainer [2021-11-03 04:31:01,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:31:01,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:31:01,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:31:01,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:31:01,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:31:01" (1/3) ... [2021-11-03 04:31:01,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28995839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:31:01, skipping insertion in model container [2021-11-03 04:31:01,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:31:01" (2/3) ... [2021-11-03 04:31:01,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28995839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:31:01, skipping insertion in model container [2021-11-03 04:31:01,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:31:01" (3/3) ... [2021-11-03 04:31:01,774 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2021-11-03 04:31:01,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:31:01,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:31:01,837 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:31:01,852 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, mAutomataTypeConcurrency=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 [2021-11-03 04:31:01,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:31:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:31:01,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:01,892 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:31:01,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:31:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1980571804, now seen corresponding path program 1 times [2021-11-03 04:31:01,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:01,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873731143] [2021-11-03 04:31:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:01,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:02,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:02,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873731143] [2021-11-03 04:31:02,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873731143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:31:02,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:31:02,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:31:02,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443206526] [2021-11-03 04:31:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:31:02,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:31:02,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:31:02,160 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-03 04:31:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:02,176 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-11-03 04:31:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:31:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-11-03 04:31:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:02,191 INFO L225 Difference]: With dead ends: 18 [2021-11-03 04:31:02,192 INFO L226 Difference]: Without dead ends: 8 [2021-11-03 04:31:02,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:31:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-03 04:31:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-03 04:31:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-11-03 04:31:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-03 04:31:02,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-03 04:31:02,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:02,303 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-03 04:31:02,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-03 04:31:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-03 04:31:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:31:02,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:02,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:02,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:31:02,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:31:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1261016426, now seen corresponding path program 1 times [2021-11-03 04:31:02,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:02,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242257195] [2021-11-03 04:31:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:02,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:02,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:02,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242257195] [2021-11-03 04:31:02,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242257195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:31:02,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:31:02,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:31:02,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672575944] [2021-11-03 04:31:02,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:31:02,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:02,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:31:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:31:02,539 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-03 04:31:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:02,601 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-11-03 04:31:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:31:02,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:31:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:02,603 INFO L225 Difference]: With dead ends: 14 [2021-11-03 04:31:02,603 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 04:31:02,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:31:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 04:31:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 04:31:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-11-03 04:31:02,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-11-03 04:31:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:02,610 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-11-03 04:31:02,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-03 04:31:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-11-03 04:31:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:31:02,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:02,613 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:02,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:31:02,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:31:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 688009029, now seen corresponding path program 1 times [2021-11-03 04:31:02,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:02,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907260549] [2021-11-03 04:31:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:02,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:02,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:02,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907260549] [2021-11-03 04:31:02,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907260549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:31:02,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484524781] [2021-11-03 04:31:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:02,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:31:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:31:02,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:31:02,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:31:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:02,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:31:02,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:31:03,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-11-03 04:31:09,309 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-03 04:31:09,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 17 [2021-11-03 04:31:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:09,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:31:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:09,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484524781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:31:09,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [710399781] [2021-11-03 04:31:09,517 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:31:09,522 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:31:09,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:31:09,545 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:31:09,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:31:09,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:31:09,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:31:09,589 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:31:09,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:31:09,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-03 04:31:09,617 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_18|]} [2021-11-03 04:31:09,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-03 04:31:09,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:31:09,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:31:09,652 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:31:09,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:09,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-03 04:31:09,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:31:09,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:31:09,804 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:31:09,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:09,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:31:09,820 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:31:09,820 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:157, output treesize:119 [2021-11-03 04:31:09,831 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-11-03 04:31:09,838 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:31:09,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 04:31:09,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-03 04:31:09,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:09,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2021-11-03 04:31:09,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-03 04:31:09,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-03 04:31:09,874 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:31:09,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:09,885 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-03 04:31:09,895 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:31:09,895 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:190, output treesize:186 [2021-11-03 04:31:09,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:09,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-03 04:31:09,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:09,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:10,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 470 [2021-11-03 04:31:10,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:10,257 INFO L180 QuantifierPusher]: treesize reduction 36, result has 63.3 percent of original size [2021-11-03 04:31:10,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 04:31:10,268 INFO L180 QuantifierPusher]: treesize reduction 37, result has 60.6 percent of original size [2021-11-03 04:31:10,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:31:10,283 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.2 percent of original size [2021-11-03 04:31:10,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-03 04:31:10,293 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:31:11,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:31:11,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:31:11,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-03 04:31:11,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920199064] [2021-11-03 04:31:11,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:31:11,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:31:11,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=211, Unknown=3, NotChecked=0, Total=272 [2021-11-03 04:31:11,124 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2021-11-03 04:31:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:11,444 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-11-03 04:31:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:31:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:31:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:11,446 INFO L225 Difference]: With dead ends: 20 [2021-11-03 04:31:11,446 INFO L226 Difference]: Without dead ends: 16 [2021-11-03 04:31:11,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=136, Invalid=461, Unknown=3, NotChecked=0, Total=600 [2021-11-03 04:31:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-03 04:31:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-03 04:31:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-11-03 04:31:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-03 04:31:11,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-11-03 04:31:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:11,453 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-03 04:31:11,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2021-11-03 04:31:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-03 04:31:11,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:31:11,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:31:11,454 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2021-11-03 04:31:11,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:31:11,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:31:11,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:31:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:31:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1824228266, now seen corresponding path program 2 times [2021-11-03 04:31:11,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:31:11,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671594395] [2021-11-03 04:31:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:31:11,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:31:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:31:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:31:11,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:31:11,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671594395] [2021-11-03 04:31:11,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671594395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:31:11,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031437183] [2021-11-03 04:31:11,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:31:11,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:31:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:31:11,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:31:11,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:31:11,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-03 04:31:11,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:31:11,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-03 04:31:11,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:31:11,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-03 04:31:12,634 INFO L354 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2021-11-03 04:31:12,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 49 [2021-11-03 04:31:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:31:12,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:31:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-03 04:31:13,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031437183] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:31:13,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263989034] [2021-11-03 04:31:13,159 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 04:31:13,160 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:31:13,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:31:13,160 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:31:13,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:31:13,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,169 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:31:13,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:31:13,171 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:31:13,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 04:31:13,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-03 04:31:13,207 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_19|]} [2021-11-03 04:31:13,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-03 04:31:13,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:31:13,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:31:13,232 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:31:13,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-03 04:31:13,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:31:13,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:31:13,287 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:31:13,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 04:31:13,300 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:31:13,301 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:157, output treesize:119 [2021-11-03 04:31:13,308 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-11-03 04:31:13,312 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:31:13,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 04:31:13,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-03 04:31:13,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:31:13,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2021-11-03 04:31:13,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-03 04:31:13,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-03 04:31:13,346 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:31:13,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-03 04:31:13,362 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:31:13,363 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:190, output treesize:186 [2021-11-03 04:31:13,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-11-03 04:31:13,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:31:13,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 455 [2021-11-03 04:31:13,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:13,570 INFO L180 QuantifierPusher]: treesize reduction 36, result has 63.3 percent of original size [2021-11-03 04:31:13,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 04:31:13,580 INFO L180 QuantifierPusher]: treesize reduction 37, result has 60.6 percent of original size [2021-11-03 04:31:13,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:31:13,590 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.2 percent of original size [2021-11-03 04:31:13,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-03 04:31:13,598 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:31:14,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:31:14,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:31:14,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-11-03 04:31:14,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323099552] [2021-11-03 04:31:14,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 04:31:14,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:31:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 04:31:14,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:31:14,747 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:31:16,036 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-03 04:31:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:31:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:31:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:16,037 INFO L225 Difference]: With dead ends: 20 [2021-11-03 04:31:16,037 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:31:16,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 04:31:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:31:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:31:16,039 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) [2021-11-03 04:31:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:31:16,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-03 04:31:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:31:16,039 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:31:16,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:31:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:31:16,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:31:16,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:31:16,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:31:16,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-03 04:31:16,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:31:16,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:16,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:16,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:16,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:31:16,393 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:31:16,393 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-11-03 04:31:16,393 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 34) no Hoare annotation was computed. [2021-11-03 04:31:16,394 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2021-11-03 04:31:16,394 INFO L853 garLoopResultBuilder]: At program point L32(lines 17 40) the Hoare annotation is: false [2021-11-03 04:31:16,394 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:31:16,394 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2021-11-03 04:31:16,394 INFO L853 garLoopResultBuilder]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (let ((.cse0 (div (+ (* ULTIMATE.start_main_~pa~0.offset (- 1)) |ULTIMATE.start_main_~#ad1~0.offset|) (- 8)))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))))) (= (mod (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset 7)) (- 8)) 0) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1))) [2021-11-03 04:31:16,395 INFO L853 garLoopResultBuilder]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse1 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (and (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (let ((.cse0 (div (+ (* ULTIMATE.start_main_~pa~0.offset (- 1)) |ULTIMATE.start_main_~#ad1~0.offset|) (- 8)))) (= .cse0 (select .cse1 (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))))) (= (mod (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset 7)) (- 8)) 0) (= ULTIMATE.start_main_~i~0 (select .cse1 (+ (* ULTIMATE.start_main_~i~0 8) |ULTIMATE.start_main_~#ad1~0.offset|))) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)))) [2021-11-03 04:31:16,395 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2021-11-03 04:31:16,395 INFO L860 garLoopResultBuilder]: At program point L39(lines 16 40) the Hoare annotation is: true [2021-11-03 04:31:16,399 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-03 04:31:16,401 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:31:16,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:31:16 BoogieIcfgContainer [2021-11-03 04:31:16,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:31:16,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:31:16,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:31:16,427 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:31:16,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:31:01" (3/4) ... [2021-11-03 04:31:16,431 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:31:16,444 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-03 04:31:16,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-03 04:31:16,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:31:16,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:31:16,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:31:16,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:31:16,486 INFO L168 Benchmark]: Toolchain (without parser) took 15361.85 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 53.7 MB in the beginning and 100.0 MB in the end (delta: -46.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:31:16,486 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:31:16,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.77 ms. Allocated memory is still 92.3 MB. Free memory was 53.5 MB in the beginning and 68.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:31:16,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:31:16,488 INFO L168 Benchmark]: Boogie Preprocessor took 22.06 ms. Allocated memory is still 92.3 MB. Free memory was 67.2 MB in the beginning and 66.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:31:16,489 INFO L168 Benchmark]: RCFGBuilder took 327.66 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 54.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:31:16,489 INFO L168 Benchmark]: TraceAbstraction took 14658.79 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 54.4 MB in the beginning and 102.1 MB in the end (delta: -47.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:31:16,490 INFO L168 Benchmark]: Witness Printer took 58.22 ms. Allocated memory is still 134.2 MB. Free memory was 102.1 MB in the beginning and 100.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:31:16,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.77 ms. Allocated memory is still 92.3 MB. Free memory was 53.5 MB in the beginning and 68.6 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 67.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.06 ms. Allocated memory is still 92.3 MB. Free memory was 67.2 MB in the beginning and 66.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 327.66 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 54.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14658.79 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 54.4 MB in the beginning and 102.1 MB in the end (delta: -47.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.22 ms. Allocated memory is still 134.2 MB. Free memory was 102.1 MB in the beginning and 100.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.5s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 49 SDslu, 12 SDs, 0 SdLazy, 87 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 109 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 365 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 13 QuantifiedInterpolants, 1091 SizeOfPredicates, 31 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((pa == ad1 && ad1 == 0) && (pa * -1 + ad1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (pa * -1 + ad1) / -8 * 8]) && (ad1 + pa * 7) % -8 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((pa == ad1 && ad1 == 0) && (pa * -1 + ad1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (pa * -1 + ad1) / -8 * 8]) && (ad1 + pa * 7) % -8 == 0) && i == unknown-#memory_int-unknown[ad1][i * 8 + ad1]) && i < unknown-#memory_int-unknown[pa][pa] + 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-03 04:31:16,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169ecaf4-8c03-43ba-abff-d1f4a713d0ab/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE