./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array26_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array26_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8 --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 56ad35a361c83538323b9be55683beef9c8271c8f67221c1a0924c8496da71d0 --- 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-2329fc7 [2022-12-13 20:37:55,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:37:55,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:37:55,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:37:55,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:37:55,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:37:55,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:37:55,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:37:55,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:37:55,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:37:55,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:37:55,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:37:55,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:37:55,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:37:55,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:37:55,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:37:55,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:37:55,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:37:55,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:37:55,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:37:55,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:37:55,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:37:55,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:37:55,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:37:55,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:37:55,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:37:55,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:37:55,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:37:55,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:37:55,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:37:55,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:37:55,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:37:55,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:37:55,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:37:55,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:37:55,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:37:55,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:37:55,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:37:55,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:37:55,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:37:55,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:37:55,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:37:55,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:37:55,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:37:55,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:37:55,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:37:55,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:37:55,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:37:55,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:37:55,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:37:55,717 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:37:55,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:37:55,717 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:37:55,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:37:55,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:37:55,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:37:55,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:37:55,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:37:55,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:37:55,718 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:37:55,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:37:55,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:37:55,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:37:55,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:37:55,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:37:55,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:37:55,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:37:55,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:37:55,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:37:55,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:37:55,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:37:55,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:37:55,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:37:55,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:37:55,721 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:37:55,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:37:55,721 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:37:55,721 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ad35a361c83538323b9be55683beef9c8271c8f67221c1a0924c8496da71d0 [2022-12-13 20:37:55,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:37:55,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:37:55,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:37:55,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:37:55,926 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:37:55,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array26_pattern.c [2022-12-13 20:37:58,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:37:58,656 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:37:58,656 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/sv-benchmarks/c/array-patterns/array26_pattern.c [2022-12-13 20:37:58,661 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/data/35e059485/0873475d77e54b509a5b2796cb9976f9/FLAG594434957 [2022-12-13 20:37:58,672 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/data/35e059485/0873475d77e54b509a5b2796cb9976f9 [2022-12-13 20:37:58,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:37:58,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:37:58,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:37:58,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:37:58,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:37:58,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cab7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58, skipping insertion in model container [2022-12-13 20:37:58,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:37:58,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:37:58,825 WARN L237 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_13b9f932-39bb-4961-b6b9-d8cba6c28729/sv-benchmarks/c/array-patterns/array26_pattern.c[1324,1337] [2022-12-13 20:37:58,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:37:58,854 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:37:58,866 WARN L237 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_13b9f932-39bb-4961-b6b9-d8cba6c28729/sv-benchmarks/c/array-patterns/array26_pattern.c[1324,1337] [2022-12-13 20:37:58,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:37:58,888 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:37:58,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58 WrapperNode [2022-12-13 20:37:58,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:37:58,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:37:58,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:37:58,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:37:58,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,924 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-12-13 20:37:58,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:37:58,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:37:58,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:37:58,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:37:58,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:37:58,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:37:58,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:37:58,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:37:58,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (1/1) ... [2022-12-13 20:37:58,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:37:58,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:37:58,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:37:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:37:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:37:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:37:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:37:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:37:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:37:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:37:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:37:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:37:59,080 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:37:59,082 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:37:59,217 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:37:59,221 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:37:59,221 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 20:37:59,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:37:59 BoogieIcfgContainer [2022-12-13 20:37:59,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:37:59,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:37:59,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:37:59,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:37:59,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:37:58" (1/3) ... [2022-12-13 20:37:59,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220baa4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:37:59, skipping insertion in model container [2022-12-13 20:37:59,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:37:58" (2/3) ... [2022-12-13 20:37:59,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220baa4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:37:59, skipping insertion in model container [2022-12-13 20:37:59,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:37:59" (3/3) ... [2022-12-13 20:37:59,229 INFO L112 eAbstractionObserver]: Analyzing ICFG array26_pattern.c [2022-12-13 20:37:59,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:37:59,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:37:59,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:37:59,284 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;@71d8ce0b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:37:59,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:37:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 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) [2022-12-13 20:37:59,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 20:37:59,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:37:59,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:37:59,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:37:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash -320975489, now seen corresponding path program 1 times [2022-12-13 20:37:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:59,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002267722] [2022-12-13 20:37:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:59,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:59,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002267722] [2022-12-13 20:37:59,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 20:37:59,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146532962] [2022-12-13 20:37:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:59,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:59,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:37:59,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:37:59,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:37:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:59,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 20:37:59,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:37:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:37:59,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:37:59,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146532962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:37:59,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:37:59,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:37:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900867325] [2022-12-13 20:37:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:37:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:37:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:37:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:37:59,515 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:37:59,527 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2022-12-13 20:37:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:37:59,528 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 20:37:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:37:59,533 INFO L225 Difference]: With dead ends: 43 [2022-12-13 20:37:59,534 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 20:37:59,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:37:59,538 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2022-12-13 20:37:59,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:37:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 20:37:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-13 20:37:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-12-13 20:37:59,562 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2022-12-13 20:37:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:37:59,562 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-12-13 20:37:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:37:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-12-13 20:37:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 20:37:59,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:37:59,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:37:59,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:37:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:59,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:37:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1931938343, now seen corresponding path program 1 times [2022-12-13 20:37:59,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:59,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921927137] [2022-12-13 20:37:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:59,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:37:59,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451745775] [2022-12-13 20:37:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:59,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:37:59,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:37:59,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:37:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:59,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:37:59,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:38:00,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:38:00,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:00,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921927137] [2022-12-13 20:38:00,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:38:00,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451745775] [2022-12-13 20:38:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451745775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:38:00,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:38:00,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:38:00,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485238117] [2022-12-13 20:38:00,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:38:00,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:38:00,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:38:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:38:00,012 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-12-13 20:38:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:00,032 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 20:38:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:38:00,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 20:38:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:00,033 INFO L225 Difference]: With dead ends: 26 [2022-12-13 20:38:00,033 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 20:38:00,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:38:00,034 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:00,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:38:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 20:38:00,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 20:38:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 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) [2022-12-13 20:38:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-12-13 20:38:00,050 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2022-12-13 20:38:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:00,050 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-12-13 20:38:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-12-13 20:38:00,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-12-13 20:38:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 20:38:00,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:00,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:00,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:38:00,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:00,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -94215630, now seen corresponding path program 1 times [2022-12-13 20:38:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:00,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482141167] [2022-12-13 20:38:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:00,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:38:00,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543209736] [2022-12-13 20:38:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:00,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:00,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:00,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:38:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:00,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:38:00,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:38:00,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:38:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:00,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482141167] [2022-12-13 20:38:00,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:38:00,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543209736] [2022-12-13 20:38:00,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543209736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:38:00,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:38:00,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:38:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640912623] [2022-12-13 20:38:00,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:38:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:38:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:38:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:38:00,377 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:38:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:00,439 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2022-12-13 20:38:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:38:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 20:38:00,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:00,440 INFO L225 Difference]: With dead ends: 54 [2022-12-13 20:38:00,440 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 20:38:00,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:38:00,442 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:00,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:38:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 20:38:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2022-12-13 20:38:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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) [2022-12-13 20:38:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-12-13 20:38:00,448 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 15 [2022-12-13 20:38:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:00,448 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-12-13 20:38:00,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:38:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-12-13 20:38:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 20:38:00,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:00,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:00,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:38:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:00,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash -169454663, now seen corresponding path program 1 times [2022-12-13 20:38:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:00,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93984273] [2022-12-13 20:38:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:00,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:00,667 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:38:00,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132610500] [2022-12-13 20:38:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:00,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:00,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:00,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:00,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:38:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:00,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:38:00,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:38:00,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:38:00,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93984273] [2022-12-13 20:38:00,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:38:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132610500] [2022-12-13 20:38:00,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132610500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:38:00,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:38:00,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:38:00,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392432187] [2022-12-13 20:38:00,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:38:00,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:38:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:00,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:38:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:38:00,784 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:38:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:00,837 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2022-12-13 20:38:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:38:00,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 20:38:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:00,838 INFO L225 Difference]: With dead ends: 54 [2022-12-13 20:38:00,838 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 20:38:00,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:38:00,839 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:00,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:38:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 20:38:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-12-13 20:38:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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) [2022-12-13 20:38:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-12-13 20:38:00,843 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 18 [2022-12-13 20:38:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:00,843 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-12-13 20:38:00,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:38:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-12-13 20:38:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 20:38:00,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:00,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:00,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 20:38:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:01,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash -308201553, now seen corresponding path program 1 times [2022-12-13 20:38:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:01,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269217790] [2022-12-13 20:38:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:01,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:38:01,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629706867] [2022-12-13 20:38:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:01,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:01,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:01,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:01,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:38:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:01,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:38:01,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:38:01,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:38:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:38:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269217790] [2022-12-13 20:38:01,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:38:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629706867] [2022-12-13 20:38:01,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629706867] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:38:01,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:38:01,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-12-13 20:38:01,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275579784] [2022-12-13 20:38:01,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:38:01,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:38:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:38:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:38:01,337 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-12-13 20:38:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:01,453 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2022-12-13 20:38:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:38:01,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 21 [2022-12-13 20:38:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:01,454 INFO L225 Difference]: With dead ends: 65 [2022-12-13 20:38:01,454 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 20:38:01,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:38:01,455 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:01,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 26 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:38:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 20:38:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2022-12-13 20:38:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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) [2022-12-13 20:38:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-12-13 20:38:01,460 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 21 [2022-12-13 20:38:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:01,461 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-12-13 20:38:01,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-12-13 20:38:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-12-13 20:38:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 20:38:01,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:01,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:01,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:38:01,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:01,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1610723178, now seen corresponding path program 1 times [2022-12-13 20:38:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:01,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183344238] [2022-12-13 20:38:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:01,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:38:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940240992] [2022-12-13 20:38:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:01,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:01,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:01,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:38:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:01,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:38:01,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:38:01,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:38:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:38:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:01,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183344238] [2022-12-13 20:38:01,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:38:01,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940240992] [2022-12-13 20:38:01,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940240992] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:38:01,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:38:01,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 20:38:01,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515003149] [2022-12-13 20:38:01,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:38:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:38:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:38:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:38:01,946 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2022-12-13 20:38:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:02,169 INFO L93 Difference]: Finished difference Result 113 states and 152 transitions. [2022-12-13 20:38:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 20:38:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 27 [2022-12-13 20:38:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:02,171 INFO L225 Difference]: With dead ends: 113 [2022-12-13 20:38:02,171 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 20:38:02,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2022-12-13 20:38:02,173 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 82 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:02,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 35 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:38:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 20:38:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2022-12-13 20:38:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 66 states have internal predecessors, (88), 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) [2022-12-13 20:38:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2022-12-13 20:38:02,184 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 27 [2022-12-13 20:38:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:02,184 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2022-12-13 20:38:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2022-12-13 20:38:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2022-12-13 20:38:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 20:38:02,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:02,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:02,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:38:02,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:02,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1943339208, now seen corresponding path program 1 times [2022-12-13 20:38:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:02,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717282476] [2022-12-13 20:38:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:02,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:38:02,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708690705] [2022-12-13 20:38:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:02,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:02,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:02,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:02,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13b9f932-39bb-4961-b6b9-d8cba6c28729/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:38:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:02,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 20:38:02,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:02,715 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 16 [2022-12-13 20:38:02,834 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 38 treesize of output 37 [2022-12-13 20:38:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:38:03,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2022-12-13 20:38:03,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:38:03,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 51 [2022-12-13 20:38:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:38:03,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:38:03,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 21 [2022-12-13 20:38:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:38:04,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:38:06,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 471 treesize of output 455 [2022-12-13 20:38:06,510 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-12-13 20:38:06,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138462427 treesize of output 133481691 [2022-12-13 20:43:46,239 WARN L233 SmtUtils]: Spent 5.66m on a formula simplification that was a NOOP. DAG size: 6868 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)