./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sum10-1.i --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_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/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_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sum10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/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_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/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 f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 --- 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 17:35:32,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:35:32,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:35:32,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:35:32,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:35:32,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:35:32,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:35:32,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:35:32,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:35:32,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:35:32,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:35:32,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:35:32,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:35:32,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:35:32,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:35:32,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:35:32,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:35:32,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:35:32,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:35:32,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:35:32,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:35:32,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:35:32,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:35:32,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:35:32,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:35:32,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:35:32,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:35:32,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:35:32,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:35:32,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:35:32,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:35:32,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:35:32,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:35:32,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:35:32,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:35:32,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:35:32,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:35:32,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:35:32,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:35:32,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:35:32,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:35:32,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:35:32,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:35:32,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:35:32,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:35:32,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:35:32,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:35:32,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:35:32,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:35:32,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:35:32,710 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:35:32,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:35:32,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:35:32,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:35:32,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:35:32,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:35:32,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:35:32,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:35:32,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:35:32,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:35:32,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:35:32,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:35:32,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:35:32,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:35:32,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:35:32,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:35:32,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:35:32,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:35:32,714 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:35:32,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:35:32,714 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:35:32,714 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_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2022-12-13 17:35:32,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:35:32,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:35:32,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:35:32,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:35:32,911 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:35:32,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/reducercommutativity/sum10-1.i [2022-12-13 17:35:35,388 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:35:35,530 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:35:35,531 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/sv-benchmarks/c/reducercommutativity/sum10-1.i [2022-12-13 17:35:35,535 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/data/0b2b17fa9/2d0dfc89c6314dc1921ce93ef727e3c1/FLAGb316d54e1 [2022-12-13 17:35:35,957 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/data/0b2b17fa9/2d0dfc89c6314dc1921ce93ef727e3c1 [2022-12-13 17:35:35,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:35:35,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:35:35,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:35:35,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:35:35,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:35:35,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:35:35" (1/1) ... [2022-12-13 17:35:35,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37880fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:35, skipping insertion in model container [2022-12-13 17:35:35,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:35:35" (1/1) ... [2022-12-13 17:35:35,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:35:35,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:35:36,085 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_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2022-12-13 17:35:36,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:35:36,094 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:35:36,107 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_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2022-12-13 17:35:36,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:35:36,117 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:35:36,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36 WrapperNode [2022-12-13 17:35:36,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:35:36,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:35:36,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:35:36,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:35:36,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,140 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-12-13 17:35:36,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:35:36,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:35:36,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:35:36,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:35:36,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:35:36,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:35:36,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:35:36,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:35:36,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (1/1) ... [2022-12-13 17:35:36,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:35:36,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:36,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:35:36,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-12-13 17:35:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-12-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:35:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:35:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:35:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:35:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:35:36,270 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:35:36,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:35:36,382 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:35:36,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:35:36,386 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:35:36,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:35:36 BoogieIcfgContainer [2022-12-13 17:35:36,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:35:36,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:35:36,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:35:36,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:35:36,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:35:35" (1/3) ... [2022-12-13 17:35:36,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682857cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:35:36, skipping insertion in model container [2022-12-13 17:35:36,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:35:36" (2/3) ... [2022-12-13 17:35:36,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682857cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:35:36, skipping insertion in model container [2022-12-13 17:35:36,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:35:36" (3/3) ... [2022-12-13 17:35:36,393 INFO L112 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2022-12-13 17:35:36,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:35:36,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:35:36,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:35:36,443 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;@6ff28a73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:35:36,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:35:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 17:35:36,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:36,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:36,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash -141219973, now seen corresponding path program 1 times [2022-12-13 17:35:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:36,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093310943] [2022-12-13 17:35:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:35:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:35:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:35:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:35:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:36,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093310943] [2022-12-13 17:35:36,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093310943] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:36,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691459378] [2022-12-13 17:35:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:36,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:36,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:36,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:35:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:36,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:35:36,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 17:35:36,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:35:36,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691459378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:35:36,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:35:36,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 17:35:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430642749] [2022-12-13 17:35:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:35:36,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:35:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:35:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:35:36,828 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 17:35:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:36,853 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-12-13 17:35:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:35:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-13 17:35:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:36,861 INFO L225 Difference]: With dead ends: 50 [2022-12-13 17:35:36,861 INFO L226 Difference]: Without dead ends: 24 [2022-12-13 17:35:36,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:35:36,866 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:36,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-13 17:35:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-13 17:35:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-13 17:35:36,901 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-12-13 17:35:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:36,901 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-13 17:35:36,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 17:35:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-13 17:35:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 17:35:36,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:36,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:36,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:35:37,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 17:35:37,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash -618478211, now seen corresponding path program 1 times [2022-12-13 17:35:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:37,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402743188] [2022-12-13 17:35:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:37,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:35:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:35:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:35:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 17:35:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402743188] [2022-12-13 17:35:37,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402743188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096794248] [2022-12-13 17:35:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:37,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:37,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:37,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:37,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:35:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:35:37,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:35:37,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:35:37,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096794248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:35:37,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:35:37,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 17:35:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800165643] [2022-12-13 17:35:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:35:37,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:35:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:35:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:35:37,361 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:35:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:37,370 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-12-13 17:35:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:35:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 17:35:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:37,371 INFO L225 Difference]: With dead ends: 42 [2022-12-13 17:35:37,371 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 17:35:37,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:35:37,373 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:37,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 17:35:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-13 17:35:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-13 17:35:37,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-12-13 17:35:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:37,378 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-13 17:35:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:35:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-13 17:35:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 17:35:37,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:37,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:37,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:35:37,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:37,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1511029509, now seen corresponding path program 1 times [2022-12-13 17:35:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:37,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635866436] [2022-12-13 17:35:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:37,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:35:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:35:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 17:35:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 17:35:37,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:37,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635866436] [2022-12-13 17:35:37,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635866436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:37,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812287656] [2022-12-13 17:35:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:37,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:37,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:37,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:37,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:35:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:37,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:35:37,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 17:35:37,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:35:37,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812287656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:35:37,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:35:37,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 17:35:37,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265090625] [2022-12-13 17:35:37,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:35:37,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:35:37,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:37,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:35:37,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:35:37,767 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:35:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:37,777 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-12-13 17:35:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:35:37,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-12-13 17:35:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:37,779 INFO L225 Difference]: With dead ends: 39 [2022-12-13 17:35:37,779 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 17:35:37,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:35:37,781 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:37,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 17:35:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-12-13 17:35:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-12-13 17:35:37,785 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-12-13 17:35:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:37,786 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-12-13 17:35:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:35:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-12-13 17:35:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 17:35:37,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:37,787 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:37,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:35:37,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 17:35:37,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:37,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:37,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1553738215, now seen corresponding path program 1 times [2022-12-13 17:35:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:37,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052753527] [2022-12-13 17:35:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:35:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:35:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:35:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:35:38,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:38,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052753527] [2022-12-13 17:35:38,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052753527] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:38,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071992652] [2022-12-13 17:35:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:38,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:38,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:38,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:38,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:35:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:35:38,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:35:38,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:35:38,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071992652] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:38,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:38,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-12-13 17:35:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161021893] [2022-12-13 17:35:38,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:38,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:35:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:35:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:35:38,302 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 17:35:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:38,336 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-12-13 17:35:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:35:38,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-12-13 17:35:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:38,337 INFO L225 Difference]: With dead ends: 54 [2022-12-13 17:35:38,337 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 17:35:38,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:35:38,339 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:38,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 17:35:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-12-13 17:35:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-12-13 17:35:38,345 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-12-13 17:35:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:38,345 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-12-13 17:35:38,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 17:35:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-12-13 17:35:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 17:35:38,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:38,346 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:38,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:35:38,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:38,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:38,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1124150243, now seen corresponding path program 2 times [2022-12-13 17:35:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:38,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180627916] [2022-12-13 17:35:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:38,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 17:35:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 17:35:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 17:35:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 17:35:38,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180627916] [2022-12-13 17:35:38,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180627916] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519470753] [2022-12-13 17:35:38,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:35:38,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:38,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:38,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:38,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:35:38,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:35:38,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:35:38,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:35:38,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 17:35:38,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 17:35:38,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519470753] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:38,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:38,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 17:35:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739356495] [2022-12-13 17:35:38,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:35:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:35:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:35:38,913 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 17:35:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:38,956 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-12-13 17:35:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:35:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-12-13 17:35:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:38,957 INFO L225 Difference]: With dead ends: 70 [2022-12-13 17:35:38,957 INFO L226 Difference]: Without dead ends: 48 [2022-12-13 17:35:38,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:35:38,958 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:38,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-13 17:35:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-12-13 17:35:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-12-13 17:35:38,965 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-12-13 17:35:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:38,965 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-12-13 17:35:38,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 17:35:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-12-13 17:35:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 17:35:38,966 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:38,967 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:38,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:35:39,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:39,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1238744391, now seen corresponding path program 3 times [2022-12-13 17:35:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:39,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293740422] [2022-12-13 17:35:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:35:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:35:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:35:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-12-13 17:35:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293740422] [2022-12-13 17:35:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293740422] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:39,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200830284] [2022-12-13 17:35:39,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:35:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:39,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:39,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:39,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:35:39,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 17:35:39,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:35:39,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:35:39,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-12-13 17:35:39,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-12-13 17:35:39,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200830284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:39,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:39,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 17:35:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646395192] [2022-12-13 17:35:39,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:39,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:35:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:35:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:35:39,457 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 17:35:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:39,477 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-12-13 17:35:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:35:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-12-13 17:35:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:39,478 INFO L225 Difference]: With dead ends: 78 [2022-12-13 17:35:39,478 INFO L226 Difference]: Without dead ends: 55 [2022-12-13 17:35:39,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:35:39,479 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:39,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-13 17:35:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-13 17:35:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-12-13 17:35:39,486 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2022-12-13 17:35:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:39,486 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-12-13 17:35:39,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 17:35:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-12-13 17:35:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 17:35:39,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:39,488 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:39,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:35:39,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:35:39,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash 756543039, now seen corresponding path program 4 times [2022-12-13 17:35:39,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:39,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953805874] [2022-12-13 17:35:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:39,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:35:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 17:35:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:35:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-12-13 17:35:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:39,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953805874] [2022-12-13 17:35:39,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953805874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:39,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433264413] [2022-12-13 17:35:39,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:35:39,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:39,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:39,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:39,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:35:39,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:35:39,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:35:39,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:35:39,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-12-13 17:35:39,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-12-13 17:35:40,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433264413] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:40,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:40,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-12-13 17:35:40,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076594291] [2022-12-13 17:35:40,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:35:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:35:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:35:40,029 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:35:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:40,057 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2022-12-13 17:35:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:35:40,058 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2022-12-13 17:35:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:40,059 INFO L225 Difference]: With dead ends: 94 [2022-12-13 17:35:40,059 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 17:35:40,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:35:40,060 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:40,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 17:35:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-13 17:35:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-12-13 17:35:40,068 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 88 [2022-12-13 17:35:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:40,068 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-12-13 17:35:40,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:35:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-12-13 17:35:40,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 17:35:40,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:40,070 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:40,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:35:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:35:40,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash 953202487, now seen corresponding path program 5 times [2022-12-13 17:35:40,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877169025] [2022-12-13 17:35:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:40,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:35:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 17:35:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 17:35:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-12-13 17:35:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877169025] [2022-12-13 17:35:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877169025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075398151] [2022-12-13 17:35:40,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:35:40,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:40,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:40,409 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:40,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:35:40,698 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-12-13 17:35:40,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:35:40,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:35:40,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 450 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-12-13 17:35:40,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-12-13 17:35:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075398151] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:40,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:40,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 17:35:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981198916] [2022-12-13 17:35:40,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:35:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:35:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:35:40,748 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 17:35:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:40,769 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-12-13 17:35:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:35:40,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-12-13 17:35:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:40,771 INFO L225 Difference]: With dead ends: 102 [2022-12-13 17:35:40,771 INFO L226 Difference]: Without dead ends: 71 [2022-12-13 17:35:40,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:35:40,772 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:40,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-13 17:35:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-13 17:35:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:40,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-12-13 17:35:40,779 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 112 [2022-12-13 17:35:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:40,780 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-12-13 17:35:40,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 17:35:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-12-13 17:35:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 17:35:40,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:40,782 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:40,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:35:40,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:40,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1215823185, now seen corresponding path program 6 times [2022-12-13 17:35:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:40,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898169072] [2022-12-13 17:35:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:40,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:35:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 17:35:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:35:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-12-13 17:35:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898169072] [2022-12-13 17:35:41,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898169072] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102238797] [2022-12-13 17:35:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 17:35:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:41,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:41,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:35:41,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-12-13 17:35:41,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:35:41,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:35:41,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 450 proven. 36 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-12-13 17:35:41,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-12-13 17:35:41,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102238797] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:41,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:41,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-12-13 17:35:41,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903196846] [2022-12-13 17:35:41,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:41,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:35:41,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:35:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:35:41,763 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 17:35:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:35:41,793 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-12-13 17:35:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:35:41,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-12-13 17:35:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:35:41,794 INFO L225 Difference]: With dead ends: 108 [2022-12-13 17:35:41,794 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 17:35:41,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:35:41,795 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:35:41,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:35:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 17:35:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-13 17:35:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:35:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-12-13 17:35:41,802 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2022-12-13 17:35:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:41,803 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-12-13 17:35:41,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 17:35:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-12-13 17:35:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-13 17:35:41,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:41,805 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:41,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 17:35:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 17:35:42,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1982748809, now seen corresponding path program 7 times [2022-12-13 17:35:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:42,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067676442] [2022-12-13 17:35:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:00,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:36:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 17:36:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:36:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:36:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:06,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067676442] [2022-12-13 17:36:06,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067676442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:36:06,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894626034] [2022-12-13 17:36:06,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 17:36:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:36:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:36:06,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:36:06,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab2bb5e8-6f67-4dc4-93b5-1f594b546ab1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:36:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:07,101 WARN L261 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 265 conjunts are in the unsatisfiable core [2022-12-13 17:36:07,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:36:07,225 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 15 treesize of output 11 [2022-12-13 17:36:08,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:08,824 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:36:08,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 464 treesize of output 178 [2022-12-13 17:36:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:11,095 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-13 17:36:11,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 844 treesize of output 307 [2022-12-13 17:36:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:11,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:11,998 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-13 17:36:11,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 810 treesize of output 307 [2022-12-13 17:36:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:13,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:13,029 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-12-13 17:36:13,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 794 treesize of output 310 [2022-12-13 17:36:14,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:14,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:14,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:14,086 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-12-13 17:36:14,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 797 treesize of output 313 [2022-12-13 17:36:15,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:15,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:15,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:15,125 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-12-13 17:36:15,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 827 treesize of output 316 [2022-12-13 17:36:16,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:16,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:16,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:16,225 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-13 17:36:16,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-12-13 17:36:17,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:17,330 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-13 17:36:17,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-12-13 17:36:18,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:18,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:36:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:18,307 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-13 17:36:18,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-12-13 17:36:19,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:19,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:36:19,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 787 treesize of output 284 [2022-12-13 17:36:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:36:20,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:36:20,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 112 treesize of output 106 [2022-12-13 17:36:21,813 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:36:21,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 633 treesize of output 193 [2022-12-13 17:36:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 17:36:22,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:36:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 4 proven. 981 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-12-13 17:36:48,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894626034] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:36:48,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:36:48,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 58, 48] total 144 [2022-12-13 17:36:48,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129687057] [2022-12-13 17:36:48,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:36:48,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-12-13 17:36:48,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-12-13 17:36:48,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=19969, Unknown=0, NotChecked=0, Total=20592 [2022-12-13 17:36:48,203 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 144 states, 140 states have (on average 1.2285714285714286) internal successors, (172), 136 states have internal predecessors, (172), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 17:36:58,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:36:59,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:37:05,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:37:09,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:38:18,115 WARN L233 SmtUtils]: Spent 55.44s on a formula simplification. DAG size of input: 459 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:38:32,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:43:52,384 WARN L233 SmtUtils]: Spent 5.18m on a formula simplification. DAG size of input: 234 DAG size of output: 218 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:43:57,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:43:59,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:44:00,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:44:03,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 17:50:12,707 WARN L233 SmtUtils]: Spent 6.07m on a formula simplification. DAG size of input: 262 DAG size of output: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)