./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:39:21,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:39:21,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:39:21,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:39:21,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:39:21,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:39:21,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:39:21,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:39:21,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:39:21,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:39:21,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:39:21,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:39:21,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:39:21,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:39:21,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:39:21,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:39:21,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:39:21,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:39:21,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:39:21,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:39:21,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:39:21,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:39:21,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:39:21,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:39:21,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:39:21,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:39:21,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:39:21,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:39:21,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:39:21,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:39:21,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:39:21,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:39:21,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:39:21,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:39:21,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:39:21,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:39:21,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:39:21,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:39:21,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:39:21,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:39:21,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:39:21,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:39:21,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:39:21,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:39:21,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:39:21,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:39:21,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:39:21,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:39:21,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:39:21,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:39:21,929 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:39:21,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:39:21,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:39:21,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:39:21,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:39:21,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:39:21,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:39:21,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:39:21,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:39:21,930 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:39:21,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:39:21,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:39:21,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:39:21,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:39:21,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:39:21,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:39:21,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:39:21,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:39:21,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:39:21,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:39:21,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:39:21,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:39:21,933 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:39:21,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:39:21,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:39:21,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2022-10-17 10:39:22,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:39:22,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:39:22,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:39:22,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:39:22,208 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:39:22,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2022-10-17 10:39:22,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/data/3c0acfe5c/4136767995484d66872eaf22d7c9279b/FLAG04d34a8a9 [2022-10-17 10:39:22,771 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:39:22,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2022-10-17 10:39:22,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/data/3c0acfe5c/4136767995484d66872eaf22d7c9279b/FLAG04d34a8a9 [2022-10-17 10:39:23,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/data/3c0acfe5c/4136767995484d66872eaf22d7c9279b [2022-10-17 10:39:23,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:39:23,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:39:23,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:39:23,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:39:23,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:39:23,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a63619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23, skipping insertion in model container [2022-10-17 10:39:23,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:39:23,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:39:23,477 WARN L230 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_372b9578-e562-4c89-8149-e429c700e85e/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2022-10-17 10:39:23,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:39:23,502 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:39:23,514 WARN L230 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_372b9578-e562-4c89-8149-e429c700e85e/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2022-10-17 10:39:23,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:39:23,535 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:39:23,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23 WrapperNode [2022-10-17 10:39:23,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:39:23,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:39:23,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:39:23,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:39:23,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,577 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-10-17 10:39:23,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:39:23,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:39:23,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:39:23,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:39:23,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:39:23,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:39:23,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:39:23,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:39:23,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (1/1) ... [2022-10-17 10:39:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:39:23,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:39:23,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:39:23,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:39:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:39:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:39:23,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:39:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:39:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:39:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:39:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:39:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:39:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:39:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:39:23,807 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:39:23,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:39:24,004 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:39:24,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:39:24,010 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:39:24,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:39:24 BoogieIcfgContainer [2022-10-17 10:39:24,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:39:24,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:39:24,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:39:24,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:39:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:39:23" (1/3) ... [2022-10-17 10:39:24,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bdb374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:39:24, skipping insertion in model container [2022-10-17 10:39:24,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:23" (2/3) ... [2022-10-17 10:39:24,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bdb374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:39:24, skipping insertion in model container [2022-10-17 10:39:24,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:39:24" (3/3) ... [2022-10-17 10:39:24,022 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2022-10-17 10:39:24,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:39:24,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:39:24,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:39:24,120 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b0631c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:39:24,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:39:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:39:24,135 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:24,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:24,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1700606493, now seen corresponding path program 1 times [2022-10-17 10:39:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:24,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891261788] [2022-10-17 10:39:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:24,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:39:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:39:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:39:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:24,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891261788] [2022-10-17 10:39:24,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891261788] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:24,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:24,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:39:24,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167963915] [2022-10-17 10:39:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:24,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:39:24,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:39:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:39:24,393 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:24,412 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2022-10-17 10:39:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:39:24,414 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-10-17 10:39:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:24,421 INFO L225 Difference]: With dead ends: 41 [2022-10-17 10:39:24,421 INFO L226 Difference]: Without dead ends: 18 [2022-10-17 10:39:24,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:39:24,428 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:24,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:39:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-17 10:39:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-10-17 10:39:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-10-17 10:39:24,467 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 18 [2022-10-17 10:39:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:24,468 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-10-17 10:39:24,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-10-17 10:39:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:39:24,470 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:24,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:39:24,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1364006487, now seen corresponding path program 1 times [2022-10-17 10:39:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:24,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239604649] [2022-10-17 10:39:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:24,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:39:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:39:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:39:24,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:24,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239604649] [2022-10-17 10:39:24,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239604649] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:24,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:24,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:39:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866848034] [2022-10-17 10:39:24,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:24,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:39:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:39:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:39:24,749 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:39:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:24,803 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-10-17 10:39:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:39:24,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-10-17 10:39:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:24,805 INFO L225 Difference]: With dead ends: 34 [2022-10-17 10:39:24,805 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 10:39:24,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:39:24,807 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:24,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:39:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 10:39:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2022-10-17 10:39:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-10-17 10:39:24,832 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2022-10-17 10:39:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:24,834 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-10-17 10:39:24,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:39:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-10-17 10:39:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:39:24,835 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:24,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:24,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:39:24,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:24,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1804375691, now seen corresponding path program 1 times [2022-10-17 10:39:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:24,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734004312] [2022-10-17 10:39:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:39:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:39:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:39:25,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734004312] [2022-10-17 10:39:25,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734004312] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:39:25,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990627318] [2022-10-17 10:39:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:25,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:39:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:39:25,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:39:25,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:39:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:25,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:39:25,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:39:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:39:25,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:39:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:39:25,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990627318] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:39:25,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:39:25,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-10-17 10:39:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530281623] [2022-10-17 10:39:25,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:39:25,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:39:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:39:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:39:25,714 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:25,827 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-10-17 10:39:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:39:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-10-17 10:39:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:25,829 INFO L225 Difference]: With dead ends: 41 [2022-10-17 10:39:25,830 INFO L226 Difference]: Without dead ends: 34 [2022-10-17 10:39:25,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:39:25,842 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:25,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:39:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-17 10:39:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2022-10-17 10:39:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-10-17 10:39:25,850 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2022-10-17 10:39:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:25,850 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-10-17 10:39:25,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:39:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-10-17 10:39:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:39:25,852 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:25,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:25,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:39:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:39:26,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1487835885, now seen corresponding path program 2 times [2022-10-17 10:39:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:26,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17127601] [2022-10-17 10:39:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:39:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:39:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:39:26,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:26,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17127601] [2022-10-17 10:39:26,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17127601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:39:26,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507132502] [2022-10-17 10:39:26,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:39:26,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:39:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:39:26,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:39:26,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372b9578-e562-4c89-8149-e429c700e85e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:39:26,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:39:26,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:39:26,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:39:26,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:39:26,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-17 10:39:27,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:39:27,021 INFO L356 Elim1Store]: treesize reduction 37, result has 28.8 percent of original size [2022-10-17 10:39:27,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2022-10-17 10:39:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:39:27,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:39:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:39:27,100 INFO L390 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 38 treesize of output 44 [2022-10-17 10:39:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:39:27,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:39:27,400 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:39:27,402 INFO L390 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 72288 treesize of output 68968 [2022-10-17 10:39:27,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68960 treesize of output 65504