./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/nr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/nr2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R --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 2a5d4c3d8db636946363c81d25b5c2e381fc236cdcde6b4765d7ce6e059d8a21 --- 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-38b53e6 [2022-11-25 17:11:22,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:11:22,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:11:22,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:11:22,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:11:22,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:11:22,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:11:22,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:11:22,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:11:22,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:11:22,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:11:22,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:11:22,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:11:22,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:11:22,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:11:22,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:11:22,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:11:22,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:11:22,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:11:22,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:11:22,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:11:22,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:11:22,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:11:22,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:11:22,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:11:22,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:11:22,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:11:22,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:11:22,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:11:22,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:11:22,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:11:22,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:11:22,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:11:22,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:11:22,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:11:22,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:11:22,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:11:22,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:11:22,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:11:22,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:11:22,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:11:22,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:11:22,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:11:22,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:11:22,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:11:22,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:11:22,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:11:22,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:11:22,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:11:22,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:11:22,950 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:11:22,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:11:22,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:11:22,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:11:22,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:11:22,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:11:22,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:11:22,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:11:22,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:11:22,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:11:22,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:11:22,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:11:22,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:11:22,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:11:22,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:11:22,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:11:22,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:11:22,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:11:22,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:11:22,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:11:22,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:11:22,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:11:22,959 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:11:22,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:11:22,960 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:11:22,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:11:22,961 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_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5d4c3d8db636946363c81d25b5c2e381fc236cdcde6b4765d7ce6e059d8a21 [2022-11-25 17:11:23,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:11:23,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:11:23,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:11:23,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:11:23,368 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:11:23,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-tiling/nr2.c [2022-11-25 17:11:26,584 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:11:26,792 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:11:26,793 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/sv-benchmarks/c/array-tiling/nr2.c [2022-11-25 17:11:26,802 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/data/74fa6c7c2/3762afc634fc4169ba39241ae1b25382/FLAGcc4409f76 [2022-11-25 17:11:26,828 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/data/74fa6c7c2/3762afc634fc4169ba39241ae1b25382 [2022-11-25 17:11:26,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:11:26,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:11:26,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:11:26,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:11:26,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:11:26,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:11:26" (1/1) ... [2022-11-25 17:11:26,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b53bdeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:26, skipping insertion in model container [2022-11-25 17:11:26,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:11:26" (1/1) ... [2022-11-25 17:11:26,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:11:26,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:11:27,090 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_17bfc1af-d0a0-4935-ac88-58c780d55029/sv-benchmarks/c/array-tiling/nr2.c[394,407] [2022-11-25 17:11:27,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:11:27,121 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:11:27,135 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_17bfc1af-d0a0-4935-ac88-58c780d55029/sv-benchmarks/c/array-tiling/nr2.c[394,407] [2022-11-25 17:11:27,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:11:27,158 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:11:27,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27 WrapperNode [2022-11-25 17:11:27,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:11:27,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:11:27,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:11:27,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:11:27,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,220 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-25 17:11:27,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:11:27,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:11:27,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:11:27,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:11:27,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:11:27,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:11:27,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:11:27,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:11:27,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (1/1) ... [2022-11-25 17:11:27,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:11:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:27,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:11:27,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:11:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:11:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:11:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:11:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:11:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:11:27,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:11:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:11:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:11:27,405 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:11:27,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:11:27,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:11:27,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:11:27,752 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:11:27,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:11:27 BoogieIcfgContainer [2022-11-25 17:11:27,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:11:27,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:11:27,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:11:27,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:11:27,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:11:26" (1/3) ... [2022-11-25 17:11:27,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cdaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:11:27, skipping insertion in model container [2022-11-25 17:11:27,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:27" (2/3) ... [2022-11-25 17:11:27,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38cdaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:11:27, skipping insertion in model container [2022-11-25 17:11:27,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:11:27" (3/3) ... [2022-11-25 17:11:27,802 INFO L112 eAbstractionObserver]: Analyzing ICFG nr2.c [2022-11-25 17:11:27,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:11:27,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:11:27,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:11:27,991 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;@198078ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:11:27,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:11:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:11:28,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:28,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:28,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2022-11-25 17:11:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732995108] [2022-11-25 17:11:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:28,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:28,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:28,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732995108] [2022-11-25 17:11:28,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732995108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:28,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:28,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:11:28,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387654540] [2022-11-25 17:11:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:11:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:11:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:11:28,340 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:28,358 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2022-11-25 17:11:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:11:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 17:11:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:28,370 INFO L225 Difference]: With dead ends: 45 [2022-11-25 17:11:28,370 INFO L226 Difference]: Without dead ends: 20 [2022-11-25 17:11:28,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:11:28,377 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:28,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:11:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-25 17:11:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-25 17:11:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-25 17:11:28,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2022-11-25 17:11:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:28,409 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-25 17:11:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-25 17:11:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:11:28,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:28,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:28,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:11:28,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2022-11-25 17:11:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:28,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760590376] [2022-11-25 17:11:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:28,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:28,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:28,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760590376] [2022-11-25 17:11:28,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760590376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:28,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:28,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:11:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981504839] [2022-11-25 17:11:28,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:11:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:11:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:11:28,626 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:28,673 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-25 17:11:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:11:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 17:11:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:28,675 INFO L225 Difference]: With dead ends: 29 [2022-11-25 17:11:28,675 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 17:11:28,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:11:28,677 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:28,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 62 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:11:28,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 17:11:28,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-25 17:11:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-25 17:11:28,684 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2022-11-25 17:11:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:28,685 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-25 17:11:28,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-25 17:11:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:11:28,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:28,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:28,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:11:28,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2022-11-25 17:11:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:28,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238186689] [2022-11-25 17:11:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:28,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238186689] [2022-11-25 17:11:28,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238186689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:28,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:28,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:11:28,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629734698] [2022-11-25 17:11:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:11:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:11:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:11:28,992 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:29,066 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-25 17:11:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:11:29,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 17:11:29,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:29,068 INFO L225 Difference]: With dead ends: 38 [2022-11-25 17:11:29,068 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 17:11:29,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:11:29,071 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:29,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:11:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 17:11:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-25 17:11:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-25 17:11:29,079 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2022-11-25 17:11:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:29,079 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-25 17:11:29,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-25 17:11:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 17:11:29,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:29,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:29,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:11:29,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash -715167033, now seen corresponding path program 1 times [2022-11-25 17:11:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:29,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032798386] [2022-11-25 17:11:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:29,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032798386] [2022-11-25 17:11:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032798386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:29,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:29,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:11:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420414416] [2022-11-25 17:11:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:29,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:11:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:29,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:11:29,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:11:29,167 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:29,194 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-25 17:11:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:11:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-25 17:11:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:29,196 INFO L225 Difference]: With dead ends: 42 [2022-11-25 17:11:29,196 INFO L226 Difference]: Without dead ends: 26 [2022-11-25 17:11:29,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:11:29,198 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:29,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:11:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-25 17:11:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-25 17:11:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-25 17:11:29,207 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-11-25 17:11:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:29,208 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-25 17:11:29,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-25 17:11:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 17:11:29,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:29,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:29,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:11:29,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1618667584, now seen corresponding path program 1 times [2022-11-25 17:11:29,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:29,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816920198] [2022-11-25 17:11:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:29,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:29,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816920198] [2022-11-25 17:11:29,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816920198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:11:29,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809594874] [2022-11-25 17:11:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:29,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:29,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:11:29,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:11:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:29,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:11:29,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:11:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:29,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:11:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:29,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809594874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:11:29,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:11:29,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-11-25 17:11:29,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306329461] [2022-11-25 17:11:29,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:11:29,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:11:29,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:11:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:11:29,473 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:29,502 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-11-25 17:11:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:11:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-25 17:11:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:29,504 INFO L225 Difference]: With dead ends: 44 [2022-11-25 17:11:29,504 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 17:11:29,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:11:29,506 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:29,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:11:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 17:11:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-25 17:11:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-25 17:11:29,513 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2022-11-25 17:11:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:29,514 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-25 17:11:29,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-25 17:11:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 17:11:29,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:29,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:29,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:11:29,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:29,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1955154983, now seen corresponding path program 2 times [2022-11-25 17:11:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:29,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435466404] [2022-11-25 17:11:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435466404] [2022-11-25 17:11:29,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435466404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:11:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54901875] [2022-11-25 17:11:29,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:11:29,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:29,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:29,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:11:29,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:11:29,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:11:29,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:11:29,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:11:29,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:11:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:30,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:11:30,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54901875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:30,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:11:30,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 17:11:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441302125] [2022-11-25 17:11:30,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:11:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:11:30,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:30,019 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:30,072 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-11-25 17:11:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:11:30,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 17:11:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:30,074 INFO L225 Difference]: With dead ends: 47 [2022-11-25 17:11:30,076 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 17:11:30,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:30,078 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:30,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:11:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 17:11:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-25 17:11:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-25 17:11:30,096 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 22 [2022-11-25 17:11:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:30,098 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-25 17:11:30,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-25 17:11:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 17:11:30,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:30,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:30,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:11:30,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:11:30,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1638747735, now seen corresponding path program 1 times [2022-11-25 17:11:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:30,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313059450] [2022-11-25 17:11:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:30,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:31,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:31,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313059450] [2022-11-25 17:11:31,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313059450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:11:31,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912806161] [2022-11-25 17:11:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:31,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:31,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:11:31,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:11:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:31,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 17:11:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:11:31,350 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 16 treesize of output 12 [2022-11-25 17:11:31,431 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-25 17:11:31,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-11-25 17:11:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:31,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:11:32,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-25 17:11:32,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-25 17:11:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:11:32,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912806161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:11:32,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:11:32,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 31 [2022-11-25 17:11:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750554917] [2022-11-25 17:11:32,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:11:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:11:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:11:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2022-11-25 17:11:32,411 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:35,448 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 [0] [2022-11-25 17:11:43,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:11:45,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:11:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:46,913 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2022-11-25 17:11:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-25 17:11:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 17:11:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:46,916 INFO L225 Difference]: With dead ends: 154 [2022-11-25 17:11:46,917 INFO L226 Difference]: Without dead ends: 134 [2022-11-25 17:11:46,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1183, Invalid=4363, Unknown=4, NotChecked=0, Total=5550 [2022-11-25 17:11:46,920 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 518 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:46,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 115 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 329 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2022-11-25 17:11:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-25 17:11:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 41. [2022-11-25 17:11:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-25 17:11:46,934 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 22 [2022-11-25 17:11:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:46,934 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-25 17:11:46,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-25 17:11:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 17:11:46,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:46,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:46,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:11:47,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:47,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash -565805188, now seen corresponding path program 1 times [2022-11-25 17:11:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:47,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404000049] [2022-11-25 17:11:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:47,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:47,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404000049] [2022-11-25 17:11:47,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404000049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:11:47,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188656934] [2022-11-25 17:11:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:47,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:47,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:47,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:11:47,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:11:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:47,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 17:11:47,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:11:47,912 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 16 treesize of output 12 [2022-11-25 17:11:48,284 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 17:11:48,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 20 [2022-11-25 17:11:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:48,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:11:48,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-25 17:11:48,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-25 17:11:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:48,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188656934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:11:48,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:11:48,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-11-25 17:11:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632973726] [2022-11-25 17:11:48,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:11:48,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:11:48,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:11:48,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-11-25 17:11:48,716 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:49,696 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-11-25 17:11:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 17:11:49,697 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-25 17:11:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:49,698 INFO L225 Difference]: With dead ends: 101 [2022-11-25 17:11:49,698 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 17:11:49,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=473, Invalid=2497, Unknown=0, NotChecked=0, Total=2970 [2022-11-25 17:11:49,700 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:49,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 128 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:11:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 17:11:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 57. [2022-11-25 17:11:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-11-25 17:11:49,722 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 28 [2022-11-25 17:11:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:49,723 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-11-25 17:11:49,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-11-25 17:11:49,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 17:11:49,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:49,724 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:49,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:11:49,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:49,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash 321872655, now seen corresponding path program 2 times [2022-11-25 17:11:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:49,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742711978] [2022-11-25 17:11:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:49,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:11:50,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:50,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742711978] [2022-11-25 17:11:50,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742711978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:11:50,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107750041] [2022-11-25 17:11:50,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:11:50,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:50,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:50,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:11:50,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:11:50,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:11:50,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:11:50,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:11:50,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:11:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:11:50,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:11:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:11:51,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107750041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:11:51,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:11:51,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-11-25 17:11:51,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158384410] [2022-11-25 17:11:51,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:11:51,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 17:11:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:51,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 17:11:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:11:51,144 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:51,412 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2022-11-25 17:11:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:11:51,413 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-25 17:11:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:51,418 INFO L225 Difference]: With dead ends: 108 [2022-11-25 17:11:51,418 INFO L226 Difference]: Without dead ends: 84 [2022-11-25 17:11:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2022-11-25 17:11:51,421 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 158 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:51,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 114 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:11:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-25 17:11:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2022-11-25 17:11:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2022-11-25 17:11:51,442 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 34 [2022-11-25 17:11:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:51,443 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2022-11-25 17:11:51,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2022-11-25 17:11:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 17:11:51,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:51,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:51,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:11:51,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:51,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1630657204, now seen corresponding path program 3 times [2022-11-25 17:11:51,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:51,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241735680] [2022-11-25 17:11:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:52,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241735680] [2022-11-25 17:11:52,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241735680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:11:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533784348] [2022-11-25 17:11:52,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:11:52,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:11:52,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:52,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:11:52,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:11:52,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 17:11:52,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:11:52,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 17:11:52,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:11:52,855 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 18 treesize of output 14 [2022-11-25 17:11:52,985 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-25 17:11:52,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 37 [2022-11-25 17:11:53,138 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-25 17:11:53,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 50 [2022-11-25 17:11:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:53,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:11:55,800 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|v_ULTIMATE.start_main_~j~0#1_29| Int) (v_ArrVal_94 Int) (v_ArrVal_95 Int)) (or (= (select (let ((.cse0 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_94) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_29| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_95)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (not (<= |ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_29| 1))) (< 1 |v_ULTIMATE.start_main_~j~0#1_29|))) is different from false [2022-11-25 17:12:00,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-25 17:12:00,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 370 [2022-11-25 17:12:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-25 17:12:00,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533784348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:12:00,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:12:00,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 39 [2022-11-25 17:12:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417729961] [2022-11-25 17:12:00,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:12:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-25 17:12:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-25 17:12:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1158, Unknown=2, NotChecked=72, Total=1482 [2022-11-25 17:12:00,651 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:10,729 INFO L93 Difference]: Finished difference Result 225 states and 271 transitions. [2022-11-25 17:12:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-25 17:12:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-25 17:12:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:10,731 INFO L225 Difference]: With dead ends: 225 [2022-11-25 17:12:10,731 INFO L226 Difference]: Without dead ends: 182 [2022-11-25 17:12:10,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=916, Invalid=4198, Unknown=2, NotChecked=140, Total=5256 [2022-11-25 17:12:10,735 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 404 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:10,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 147 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 609 Invalid, 0 Unknown, 74 Unchecked, 0.8s Time] [2022-11-25 17:12:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-25 17:12:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 70. [2022-11-25 17:12:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2022-11-25 17:12:10,757 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 37 [2022-11-25 17:12:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:10,757 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2022-11-25 17:12:10,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2022-11-25 17:12:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 17:12:10,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:10,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:10,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:12:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:12:10,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1907846367, now seen corresponding path program 4 times [2022-11-25 17:12:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065617998] [2022-11-25 17:12:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:10,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:12:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065617998] [2022-11-25 17:12:11,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065617998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:11,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266204202] [2022-11-25 17:12:11,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:12:11,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:11,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:11,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:11,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:12:11,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:12:11,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:12:11,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:12:11,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:11,817 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 18 treesize of output 14 [2022-11-25 17:12:11,903 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-25 17:12:11,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-11-25 17:12:12,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 17:12:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:12:12,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:12:18,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-11-25 17:12:18,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 86 [2022-11-25 17:12:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:12:18,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266204202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:12:18,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:12:18,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 31 [2022-11-25 17:12:18,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204397707] [2022-11-25 17:12:18,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:12:18,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:12:18,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:12:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=793, Unknown=2, NotChecked=0, Total=930 [2022-11-25 17:12:18,581 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:19,474 INFO L93 Difference]: Finished difference Result 176 states and 210 transitions. [2022-11-25 17:12:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 17:12:19,475 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-25 17:12:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:19,476 INFO L225 Difference]: With dead ends: 176 [2022-11-25 17:12:19,476 INFO L226 Difference]: Without dead ends: 124 [2022-11-25 17:12:19,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=264, Invalid=1456, Unknown=2, NotChecked=0, Total=1722 [2022-11-25 17:12:19,478 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 128 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:19,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 208 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:12:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-25 17:12:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2022-11-25 17:12:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2022-11-25 17:12:19,509 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 43 [2022-11-25 17:12:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:19,509 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2022-11-25 17:12:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2022-11-25 17:12:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 17:12:19,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:19,511 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:19,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 17:12:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:19,717 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -326927822, now seen corresponding path program 5 times [2022-11-25 17:12:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845978810] [2022-11-25 17:12:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:12:20,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:20,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845978810] [2022-11-25 17:12:20,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845978810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:20,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604351083] [2022-11-25 17:12:20,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:12:20,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:20,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:20,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:20,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:12:20,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-25 17:12:20,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:12:20,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 17:12:20,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:20,680 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 16 treesize of output 12 [2022-11-25 17:12:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:12:20,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:12:21,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-25 17:12:21,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-11-25 17:12:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:12:21,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604351083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:12:21,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:12:21,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 27 [2022-11-25 17:12:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489437576] [2022-11-25 17:12:21,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:12:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 17:12:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 17:12:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2022-11-25 17:12:21,255 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 27 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:22,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:22,406 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2022-11-25 17:12:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-25 17:12:22,407 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-25 17:12:22,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:22,408 INFO L225 Difference]: With dead ends: 205 [2022-11-25 17:12:22,408 INFO L226 Difference]: Without dead ends: 203 [2022-11-25 17:12:22,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=452, Invalid=2410, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 17:12:22,410 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 134 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:22,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 332 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:12:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-25 17:12:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 109. [2022-11-25 17:12:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 108 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2022-11-25 17:12:22,445 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 49 [2022-11-25 17:12:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:22,445 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2022-11-25 17:12:22,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2022-11-25 17:12:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 17:12:22,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:22,446 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:22,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:12:22,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:22,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1936093747, now seen corresponding path program 6 times [2022-11-25 17:12:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634791554] [2022-11-25 17:12:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 17:12:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:22,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634791554] [2022-11-25 17:12:22,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634791554] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:22,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713906543] [2022-11-25 17:12:22,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:12:22,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:22,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:12:22,862 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-25 17:12:22,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:12:22,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:12:22,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 17:12:22,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:12:22,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713906543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:22,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:12:22,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-11-25 17:12:22,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588505701] [2022-11-25 17:12:22,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:22,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:12:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:12:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:22,893 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:22,954 INFO L93 Difference]: Finished difference Result 198 states and 240 transitions. [2022-11-25 17:12:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:12:22,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-25 17:12:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:22,956 INFO L225 Difference]: With dead ends: 198 [2022-11-25 17:12:22,957 INFO L226 Difference]: Without dead ends: 109 [2022-11-25 17:12:22,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:22,958 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:22,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:12:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-25 17:12:22,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2022-11-25 17:12:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 103 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2022-11-25 17:12:22,993 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 49 [2022-11-25 17:12:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:22,993 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2022-11-25 17:12:22,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2022-11-25 17:12:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 17:12:22,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:22,995 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:23,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:12:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:23,202 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -53121777, now seen corresponding path program 7 times [2022-11-25 17:12:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:23,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039685261] [2022-11-25 17:12:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:12:24,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039685261] [2022-11-25 17:12:24,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039685261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904275047] [2022-11-25 17:12:24,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:12:24,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:24,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:24,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:24,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:12:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:24,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 17:12:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:24,568 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 16 treesize of output 12 [2022-11-25 17:12:24,670 INFO L321 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2022-11-25 17:12:24,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 36 [2022-11-25 17:12:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:12:25,047 INFO L321 Elim1Store]: treesize reduction 38, result has 40.6 percent of original size [2022-11-25 17:12:25,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 61 [2022-11-25 17:12:25,180 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-25 17:12:25,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2022-11-25 17:12:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:12:43,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:12:45,827 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_53| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_53| 2)) (forall ((v_ArrVal_207 Int)) (let ((.cse0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) (* |v_ULTIMATE.start_main_~j~0#1_53| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_207) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0) (= .cse0 0)))))) is different from false [2022-11-25 17:13:18,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-11-25 17:13:18,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1555 treesize of output 1523 [2022-11-25 17:13:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 77 refuted. 2 times theorem prover too weak. 7 trivial. 3 not checked. [2022-11-25 17:13:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904275047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:13:21,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:13:21,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 19] total 53 [2022-11-25 17:13:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014754252] [2022-11-25 17:13:21,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:13:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-25 17:13:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-25 17:13:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2331, Unknown=24, NotChecked=100, Total=2756 [2022-11-25 17:13:21,704 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:29,518 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 [0] [2022-11-25 17:13:31,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:37,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:39,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:41,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:47,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:50,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:54,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:56,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:13:58,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:00,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:02,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:18,811 WARN L233 SmtUtils]: Spent 14.07s on a formula simplification. DAG size of input: 47 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:14:21,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:23,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:33,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:43,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:45,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:14:59,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:01,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:04,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:06,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:08,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:10,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:12,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:25,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:27,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:33,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:41,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:48,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:54,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:56,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:58,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:00,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:02,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:04,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:06,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:08,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:14,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:17,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:23,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:25,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:27,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:29,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:31,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:41,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:47,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:49,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:51,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:53,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:55,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:57,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:59,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:05,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:07,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:09,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:09,836 INFO L93 Difference]: Finished difference Result 238 states and 271 transitions. [2022-11-25 17:17:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-25 17:17:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-25 17:17:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:09,839 INFO L225 Difference]: With dead ends: 238 [2022-11-25 17:17:09,839 INFO L226 Difference]: Without dead ends: 222 [2022-11-25 17:17:09,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3261 ImplicationChecksByTransitivity, 169.1s TimeCoverageRelationStatistics Valid=1489, Invalid=9585, Unknown=60, NotChecked=208, Total=11342 [2022-11-25 17:17:09,842 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 484 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 86 mSolverCounterUnsat, 57 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 57 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 111.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:09,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 502 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1507 Invalid, 57 Unknown, 134 Unchecked, 111.9s Time] [2022-11-25 17:17:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-25 17:17:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 102. [2022-11-25 17:17:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 101 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2022-11-25 17:17:09,871 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 52 [2022-11-25 17:17:09,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:09,871 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2022-11-25 17:17:09,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2022-11-25 17:17:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 17:17:09,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:09,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:09,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:10,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash -168362683, now seen corresponding path program 8 times [2022-11-25 17:17:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693460223] [2022-11-25 17:17:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 33 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:10,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693460223] [2022-11-25 17:17:10,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693460223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:10,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062713016] [2022-11-25 17:17:10,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:17:10,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:10,671 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:10,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:17:10,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:17:10,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:17:10,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:17:10,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:11,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:17:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:11,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062713016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:17:11,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:17:11,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2022-11-25 17:17:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715831042] [2022-11-25 17:17:11,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:17:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 17:17:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 17:17:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 17:17:11,876 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:12,317 INFO L93 Difference]: Finished difference Result 165 states and 185 transitions. [2022-11-25 17:17:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:17:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 17:17:12,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:12,320 INFO L225 Difference]: With dead ends: 165 [2022-11-25 17:17:12,320 INFO L226 Difference]: Without dead ends: 129 [2022-11-25 17:17:12,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=418, Invalid=1142, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:17:12,324 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 291 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:12,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 196 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:17:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-25 17:17:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 109. [2022-11-25 17:17:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 108 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2022-11-25 17:17:12,359 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 55 [2022-11-25 17:17:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:12,360 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2022-11-25 17:17:12,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2022-11-25 17:17:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 17:17:12,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:12,361 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:12,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:12,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1879844020, now seen corresponding path program 9 times [2022-11-25 17:17:12,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962301151] [2022-11-25 17:17:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 6 proven. 134 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:17:14,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:14,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962301151] [2022-11-25 17:17:14,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962301151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:14,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494053] [2022-11-25 17:17:14,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:17:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:14,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:14,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bfc1af-d0a0-4935-ac88-58c780d55029/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:17:14,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-25 17:17:14,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:17:14,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-25 17:17:14,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:14,739 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 16 treesize of output 12 [2022-11-25 17:17:14,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:14,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-25 17:17:14,946 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-25 17:17:14,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 37 [2022-11-25 17:17:15,153 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-25 17:17:15,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 37 [2022-11-25 17:17:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:15,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-11-25 17:17:17,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:17,559 INFO L321 Elim1Store]: treesize reduction 51, result has 49.5 percent of original size [2022-11-25 17:17:17,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 70 [2022-11-25 17:17:17,934 INFO L321 Elim1Store]: treesize reduction 51, result has 55.7 percent of original size [2022-11-25 17:17:17,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 108 [2022-11-25 17:17:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 6 proven. 135 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:18,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:17:20,873 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| Int) (v_ArrVal_279 Int) (v_ArrVal_277 Int) (|v_ULTIMATE.start_main_~j~0#1_75| Int)) (or (= (select (let ((.cse0 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_277) (+ (* |v_ULTIMATE.start_main_~j~0#1_75| (- 4)) .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_279)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (< 1 |v_ULTIMATE.start_main_~j~0#1_75|) (not (<= |ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_75| 1))))) is different from false [2022-11-25 17:17:56,735 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (forall ((|ULTIMATE.start_main_~j~0#1| Int) (v_ArrVal_279 Int) (v_ArrVal_277 Int) (|v_ULTIMATE.start_main_~j~0#1_79| Int) (v_ArrVal_274 Int) (|v_ULTIMATE.start_main_~j~0#1_75| Int) (|v_ULTIMATE.start_main_~i~0#1_96| Int) (|v_ULTIMATE.start_main_~j~0#1_78| Int)) (or (= (select (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_96| 8))) (store (store (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_97| 8))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_274) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_79| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0)) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_78| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_277) (+ (* |v_ULTIMATE.start_main_~j~0#1_75| (- 4)) .cse1 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_279)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (not (<= |v_ULTIMATE.start_main_~j~0#1_78| (+ |v_ULTIMATE.start_main_~j~0#1_75| 1))) (< 1 |v_ULTIMATE.start_main_~j~0#1_75|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |v_ULTIMATE.start_main_~j~0#1_79|) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_97| 1) |v_ULTIMATE.start_main_~i~0#1_96|)) (not (<= |ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_79| 1))))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_97|)))) is different from false [2022-11-25 17:18:10,465 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| Int)) (or (forall ((v_ArrVal_279 Int) (v_ArrVal_277 Int) (|v_ULTIMATE.start_main_~j~0#1_79| Int) (v_ArrVal_274 Int) (|v_ULTIMATE.start_main_~j~0#1_75| Int) (v_ArrVal_271 Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (|v_ULTIMATE.start_main_~i~0#1_96| Int) (|v_ULTIMATE.start_main_~j~0#1_78| Int) (|v_ULTIMATE.start_main_~j~0#1_82| Int)) (or (= (select (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_96| 8))) (store (store (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_97| 8))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_271) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_82| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_274) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_79| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0)) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_78| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_277) (+ (* |v_ULTIMATE.start_main_~j~0#1_75| (- 4)) .cse1 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_279)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (not (<= |v_ULTIMATE.start_main_~j~0#1_78| (+ |v_ULTIMATE.start_main_~j~0#1_75| 1))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_97|)) (< 1 |v_ULTIMATE.start_main_~j~0#1_75|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |v_ULTIMATE.start_main_~j~0#1_79|) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_97| 1) |v_ULTIMATE.start_main_~i~0#1_96|)) (not (<= |v_ULTIMATE.start_main_~j~0#1_82| (+ |v_ULTIMATE.start_main_~j~0#1_79| 1))))) (< 1 |ULTIMATE.start_main_~j~0#1|))) is different from false [2022-11-25 17:18:12,659 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_75| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (|v_ULTIMATE.start_main_~i~0#1_96| Int) (|v_ULTIMATE.start_main_~j~0#1_78| Int) (|v_ULTIMATE.start_main_~j~0#1_82| Int) (|v_ULTIMATE.start_main_~j~0#1_84| Int) (v_ArrVal_269 Int) (v_ArrVal_279 Int) (v_ArrVal_277 Int) (|v_ULTIMATE.start_main_~j~0#1_79| Int) (v_ArrVal_274 Int) (v_ArrVal_271 Int)) (or (< 1 |v_ULTIMATE.start_main_~j~0#1_84|) (not (<= |v_ULTIMATE.start_main_~j~0#1_78| (+ |v_ULTIMATE.start_main_~j~0#1_75| 1))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_97|)) (< 1 |v_ULTIMATE.start_main_~j~0#1_75|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |v_ULTIMATE.start_main_~j~0#1_79|) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_96| 8))) (store (store (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_97| 8))) (store (store (let ((.cse0 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_269) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_84| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_271)) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_82| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_274) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_79| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0)) (+ .cse2 (* |v_ULTIMATE.start_main_~j~0#1_78| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_277) (+ (* |v_ULTIMATE.start_main_~j~0#1_75| (- 4)) .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_279)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_97| 1) |v_ULTIMATE.start_main_~i~0#1_96|)) (not (<= |v_ULTIMATE.start_main_~j~0#1_82| (+ |v_ULTIMATE.start_main_~j~0#1_79| 1))))) is different from false [2022-11-25 17:18:14,789 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_85| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_85| 2)) (forall ((|v_ULTIMATE.start_main_~j~0#1_75| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (|v_ULTIMATE.start_main_~i~0#1_96| Int) (|v_ULTIMATE.start_main_~j~0#1_78| Int) (|v_ULTIMATE.start_main_~j~0#1_82| Int) (|v_ULTIMATE.start_main_~j~0#1_84| Int) (v_ArrVal_269 Int) (v_ArrVal_279 Int) (v_ArrVal_277 Int) (|v_ULTIMATE.start_main_~j~0#1_79| Int) (v_ArrVal_274 Int) (v_ArrVal_271 Int)) (or (< 1 |v_ULTIMATE.start_main_~j~0#1_84|) (not (<= |v_ULTIMATE.start_main_~j~0#1_78| (+ |v_ULTIMATE.start_main_~j~0#1_75| 1))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_97|)) (< 1 |v_ULTIMATE.start_main_~j~0#1_75|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |v_ULTIMATE.start_main_~j~0#1_79|) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_97| 1) |v_ULTIMATE.start_main_~i~0#1_96|)) (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_96| 8))) (store (store (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_97| 8))) (store (store (let ((.cse0 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_85| (- 4))) v_ArrVal_269) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_84| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_271)) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_82| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_274) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_79| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0)) (+ .cse2 (* |v_ULTIMATE.start_main_~j~0#1_78| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_277) (+ (* |v_ULTIMATE.start_main_~j~0#1_75| (- 4)) .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_279)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (not (<= |v_ULTIMATE.start_main_~j~0#1_82| (+ |v_ULTIMATE.start_main_~j~0#1_79| 1))))))) is different from false [2022-11-25 17:18:16,869 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (forall ((|v_ULTIMATE.start_main_~j~0#1_85| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_85| 2)) (forall ((|v_ULTIMATE.start_main_~j~0#1_75| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (|v_ULTIMATE.start_main_~i~0#1_96| Int) (|v_ULTIMATE.start_main_~j~0#1_78| Int) (|v_ULTIMATE.start_main_~j~0#1_82| Int) (|v_ULTIMATE.start_main_~j~0#1_84| Int) (v_ArrVal_269 Int) (v_ArrVal_279 Int) (v_ArrVal_277 Int) (|v_ULTIMATE.start_main_~j~0#1_79| Int) (v_ArrVal_274 Int) (v_ArrVal_271 Int)) (or (= (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_96| 8))) (store (store (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_97| 8))) (store (store (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_98| 8))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_85| (- 4))) v_ArrVal_269) (+ (* |v_ULTIMATE.start_main_~j~0#1_84| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) v_ArrVal_271)) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_82| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_274) (+ .cse1 (* |v_ULTIMATE.start_main_~j~0#1_79| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0)) (+ .cse2 (* |v_ULTIMATE.start_main_~j~0#1_78| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_277) (+ (* |v_ULTIMATE.start_main_~j~0#1_75| (- 4)) .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_279)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (< 1 |v_ULTIMATE.start_main_~j~0#1_84|) (not (<= |v_ULTIMATE.start_main_~j~0#1_78| (+ |v_ULTIMATE.start_main_~j~0#1_75| 1))) (< 1 |v_ULTIMATE.start_main_~j~0#1_75|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |v_ULTIMATE.start_main_~j~0#1_79|) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_97| 1) |v_ULTIMATE.start_main_~i~0#1_96|)) (not (<= |v_ULTIMATE.start_main_~j~0#1_82| (+ |v_ULTIMATE.start_main_~j~0#1_79| 1))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_98| 1) |v_ULTIMATE.start_main_~i~0#1_97|)))))))) is different from false [2022-11-25 17:18:17,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2022-11-25 17:18:17,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51294186 treesize of output 51228650