./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res1o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res1o.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc --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 64693615f2d98484fbf4ccec390e9fe8d95f9d4648b0c6cc4a2e86f0656bfacf --- 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-5e519f3 [2022-11-02 21:00:57,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:57,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:58,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:58,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:58,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:58,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:58,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:58,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:58,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:58,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:58,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:58,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:58,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:58,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:58,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:58,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:58,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:58,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:58,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:58,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:58,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:58,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:58,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:58,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:58,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:58,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:58,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:58,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:58,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:58,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:58,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:58,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:58,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:58,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:58,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:58,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:58,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:58,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:58,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:58,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:58,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:00:58,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:58,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:58,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:58,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:58,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:58,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:58,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:58,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:58,132 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:58,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:58,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:00:58,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:58,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:00:58,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:58,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:58,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:58,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:58,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:00:58,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:58,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:58,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:58,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:58,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:58,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:58,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:58,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:58,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:58,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:58,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:58,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:58,137 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:58,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:58,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:58,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64693615f2d98484fbf4ccec390e9fe8d95f9d4648b0c6cc4a2e86f0656bfacf [2022-11-02 21:00:58,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:58,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:58,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:58,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:58,468 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:58,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-fpi/res1o.c [2022-11-02 21:00:58,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/data/5df24f28d/4067ec3358fe44638f7a96061d8a6fa1/FLAGc1608bcd6 [2022-11-02 21:00:59,066 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:59,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/sv-benchmarks/c/array-fpi/res1o.c [2022-11-02 21:00:59,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/data/5df24f28d/4067ec3358fe44638f7a96061d8a6fa1/FLAGc1608bcd6 [2022-11-02 21:00:59,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/data/5df24f28d/4067ec3358fe44638f7a96061d8a6fa1 [2022-11-02 21:00:59,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:59,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:59,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:59,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:59,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:59,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3b1545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59, skipping insertion in model container [2022-11-02 21:00:59,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:59,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:59,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/sv-benchmarks/c/array-fpi/res1o.c[588,601] [2022-11-02 21:00:59,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:59,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:59,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/sv-benchmarks/c/array-fpi/res1o.c[588,601] [2022-11-02 21:00:59,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:59,776 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:59,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59 WrapperNode [2022-11-02 21:00:59,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:59,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:59,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:59,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:59,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,821 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-11-02 21:00:59,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:59,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:59,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:59,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:59,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:59,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:59,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:59,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:59,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (1/1) ... [2022-11-02 21:00:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:59,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:59,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:59,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:59,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:00:59,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:00:59,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:00:59,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:00:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:59,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:00:59,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:01:00,072 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:00,075 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:00,289 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:00,294 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:00,295 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:01:00,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:00 BoogieIcfgContainer [2022-11-02 21:01:00,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:00,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:00,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:00,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:00,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:59" (1/3) ... [2022-11-02 21:01:00,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cd4b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:00, skipping insertion in model container [2022-11-02 21:01:00,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:59" (2/3) ... [2022-11-02 21:01:00,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cd4b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:00, skipping insertion in model container [2022-11-02 21:01:00,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:00" (3/3) ... [2022-11-02 21:01:00,320 INFO L112 eAbstractionObserver]: Analyzing ICFG res1o.c [2022-11-02 21:01:00,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:00,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:01:00,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:00,410 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;@1afe92bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:00,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:01:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:01:00,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:00,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:00,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2022-11-02 21:01:00,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:00,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256258029] [2022-11-02 21:01:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:00,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256258029] [2022-11-02 21:01:00,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256258029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:00,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:00,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:01:00,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020200422] [2022-11-02 21:01:00,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:01:00,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:01:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:01:00,657 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:00,672 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-11-02 21:01:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:01:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:01:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:00,682 INFO L225 Difference]: With dead ends: 44 [2022-11-02 21:01:00,682 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 21:01:00,685 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 [2022-11-02 21:01:00,689 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:00,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 21:01:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 21:01:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2022-11-02 21:01:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-02 21:01:00,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2022-11-02 21:01:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:00,722 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-02 21:01:00,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-02 21:01:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:01:00,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:00,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:00,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:01:00,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2022-11-02 21:01:00,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:00,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212011574] [2022-11-02 21:01:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:00,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:00,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212011574] [2022-11-02 21:01:00,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212011574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:00,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:00,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578603212] [2022-11-02 21:01:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:00,946 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:01,071 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-11-02 21:01:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:01:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:01,073 INFO L225 Difference]: With dead ends: 41 [2022-11-02 21:01:01,073 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 21:01:01,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:01,075 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:01,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 21:01:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-11-02 21:01:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2022-11-02 21:01:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-02 21:01:01,082 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-11-02 21:01:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:01,083 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-02 21:01:01,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:01,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-02 21:01:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:01:01,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:01,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:01,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:01:01,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2022-11-02 21:01:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:01,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926217484] [2022-11-02 21:01:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:02,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:02,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926217484] [2022-11-02 21:01:02,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926217484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:02,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816908147] [2022-11-02 21:01:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:02,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:02,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:01:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:02,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 21:01:02,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:02,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 21:01:02,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:01:02,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 21:01:03,074 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:01:03,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 36 treesize of output 27 [2022-11-02 21:01:03,271 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-02 21:01:03,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 28 [2022-11-02 21:01:03,498 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-02 21:01:03,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2022-11-02 21:01:03,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-02 21:01:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:03,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:05,348 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~b~0#1.base| Int)) (< (let ((.cse0 (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (+ (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (* c_~N~0 2) 1))) is different from false [2022-11-02 21:01:07,389 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~b~0#1.base| Int)) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (* c_~N~0 2))) is different from false [2022-11-02 21:01:07,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:01:07,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 21:01:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 21:01:07,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816908147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:07,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:07,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 29 [2022-11-02 21:01:07,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690216331] [2022-11-02 21:01:07,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:07,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 21:01:07,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 21:01:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=574, Unknown=2, NotChecked=102, Total=812 [2022-11-02 21:01:07,684 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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) [2022-11-02 21:01:09,080 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (* c_~N~0 2))) (and (forall ((|ULTIMATE.start_main_~b~0#1.base| Int)) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse2 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (= .cse1 .cse2) (= .cse2 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|))))) (= |c_ULTIMATE.start_main_~#sum~0#1.offset| 0) (<= (+ .cse1 1) .cse0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 1 c_~N~0) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)))) is different from false [2022-11-02 21:01:10,350 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (* c_~N~0 2))) (and (forall ((|ULTIMATE.start_main_~b~0#1.base| Int)) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse2 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (= .cse1 .cse2) (= .cse2 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|))))) (= |c_ULTIMATE.start_main_~#sum~0#1.offset| 0) (<= (+ .cse1 1) .cse0) (<= 1 c_~N~0) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)))) is different from false [2022-11-02 21:01:11,563 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (* c_~N~0 2))) (and (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse1 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) 0))) (and (= .cse0 .cse1) (= .cse1 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|))))) (= |c_ULTIMATE.start_main_~#sum~0#1.offset| 0) (<= (+ .cse0 1) .cse2) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 1 c_~N~0) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (forall ((|ULTIMATE.start_main_~b~0#1.base| Int)) (< (let ((.cse3 (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (+ (select (select (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse2 1))))) is different from false [2022-11-02 21:01:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:11,642 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-02 21:01:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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 23 [2022-11-02 21:01:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:11,644 INFO L225 Difference]: With dead ends: 39 [2022-11-02 21:01:11,645 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 21:01:11,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=189, Invalid=756, Unknown=5, NotChecked=310, Total=1260 [2022-11-02 21:01:11,647 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:11,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 66 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 74 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2022-11-02 21:01:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 21:01:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-11-02 21:01:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-02 21:01:11,657 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2022-11-02 21:01:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:11,658 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-02 21:01:11,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 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) [2022-11-02 21:01:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-02 21:01:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:01:11,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:11,660 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, 1, 1, 1] [2022-11-02 21:01:11,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:01:11,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:11,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1774307726, now seen corresponding path program 2 times [2022-11-02 21:01:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:11,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424296412] [2022-11-02 21:01:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:01:11,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424296412] [2022-11-02 21:01:11,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424296412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:11,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782844020] [2022-11-02 21:01:11,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:11,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:11,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:12,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:01:12,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:12,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:12,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:12,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:01:12,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:01:12,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782844020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:12,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:12,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-02 21:01:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494602720] [2022-11-02 21:01:12,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:12,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:12,252 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:12,479 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2022-11-02 21:01:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 21:01:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:12,483 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:01:12,483 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 21:01:12,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:12,489 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:12,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 34 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:12,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 21:01:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-11-02 21:01:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-11-02 21:01:12,506 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2022-11-02 21:01:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:12,506 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-11-02 21:01:12,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-11-02 21:01:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:01:12,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:12,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:12,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:12,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:12,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1964080588, now seen corresponding path program 3 times [2022-11-02 21:01:12,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:12,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214321861] [2022-11-02 21:01:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:01:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:12,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214321861] [2022-11-02 21:01:12,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214321861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299523399] [2022-11-02 21:01:12,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:01:12,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:12,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:12,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:12,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:01:12,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 21:01:12,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:12,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:01:12,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:01:13,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:01:13,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299523399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:13,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:13,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-02 21:01:13,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498617060] [2022-11-02 21:01:13,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:13,102 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:13,274 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-11-02 21:01:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 21:01:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:13,276 INFO L225 Difference]: With dead ends: 43 [2022-11-02 21:01:13,276 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 21:01:13,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:01:13,279 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:13,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 33 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 21:01:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-11-02 21:01:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-02 21:01:13,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2022-11-02 21:01:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:13,294 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-02 21:01:13,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-02 21:01:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 21:01:13,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:13,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:13,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:13,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash 666081912, now seen corresponding path program 4 times [2022-11-02 21:01:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:13,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865114605] [2022-11-02 21:01:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865114605] [2022-11-02 21:01:16,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865114605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:16,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459526489] [2022-11-02 21:01:16,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:01:16,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:16,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:16,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:01:16,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:01:16,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:16,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 21:01:16,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:16,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 21:01:16,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:01:16,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 21:01:16,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-02 21:01:16,859 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-02 21:01:16,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 49 [2022-11-02 21:01:17,119 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-02 21:01:17,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 61 [2022-11-02 21:01:17,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:17,867 INFO L356 Elim1Store]: treesize reduction 178, result has 26.1 percent of original size [2022-11-02 21:01:17,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 92 [2022-11-02 21:01:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:18,734 INFO L356 Elim1Store]: treesize reduction 154, result has 36.4 percent of original size [2022-11-02 21:01:18,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 138 treesize of output 170 [2022-11-02 21:01:19,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:19,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:01:19,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-11-02 21:01:19,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:19,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-02 21:01:20,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:20,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2022-11-02 21:01:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:20,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:52,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459526489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:52,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:52,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 64 [2022-11-02 21:01:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996984276] [2022-11-02 21:01:52,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:52,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-02 21:01:52,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:52,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-02 21:01:52,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=3519, Unknown=12, NotChecked=0, Total=4032 [2022-11-02 21:01:52,887 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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) [2022-11-02 21:02:04,317 WARN L234 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:02:31,183 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:03:31,002 WARN L234 SmtUtils]: Spent 42.40s on a formula simplification. DAG size of input: 71 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:03:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:40,418 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2022-11-02 21:03:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 21:03:40,419 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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 31 [2022-11-02 21:03:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:40,421 INFO L225 Difference]: With dead ends: 88 [2022-11-02 21:03:40,421 INFO L226 Difference]: Without dead ends: 83 [2022-11-02 21:03:40,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 141.3s TimeCoverageRelationStatistics Valid=1062, Invalid=7461, Unknown=33, NotChecked=0, Total=8556 [2022-11-02 21:03:40,425 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:40,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 131 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 251 Invalid, 0 Unknown, 485 Unchecked, 0.4s Time] [2022-11-02 21:03:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-02 21:03:40,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2022-11-02 21:03:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 68 states have internal predecessors, (81), 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) [2022-11-02 21:03:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2022-11-02 21:03:40,445 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 31 [2022-11-02 21:03:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:40,445 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2022-11-02 21:03:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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) [2022-11-02 21:03:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2022-11-02 21:03:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 21:03:40,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:40,447 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] [2022-11-02 21:03:40,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 21:03:40,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:40,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash 207824378, now seen corresponding path program 5 times [2022-11-02 21:03:40,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:40,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023550126] [2022-11-02 21:03:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:40,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:03:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023550126] [2022-11-02 21:03:40,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023550126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664424384] [2022-11-02 21:03:40,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:03:40,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:40,815 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:40,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:03:40,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 21:03:40,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:40,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:03:40,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:03:41,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:03:41,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664424384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:41,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:41,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-02 21:03:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804659010] [2022-11-02 21:03:41,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:41,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:03:41,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:03:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:03:41,182 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2022-11-02 21:03:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:41,436 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2022-11-02 21:03:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 33 [2022-11-02 21:03:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:41,438 INFO L225 Difference]: With dead ends: 131 [2022-11-02 21:03:41,438 INFO L226 Difference]: Without dead ends: 74 [2022-11-02 21:03:41,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:41,439 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:41,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 34 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-02 21:03:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2022-11-02 21:03:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 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) [2022-11-02 21:03:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-11-02 21:03:41,456 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 33 [2022-11-02 21:03:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:41,456 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-11-02 21:03:41,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2022-11-02 21:03:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-11-02 21:03:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 21:03:41,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:41,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:41,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:41,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:41,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:41,687 INFO L85 PathProgramCache]: Analyzing trace with hash 236928956, now seen corresponding path program 6 times [2022-11-02 21:03:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:41,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788168770] [2022-11-02 21:03:41,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:41,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:03:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788168770] [2022-11-02 21:03:41,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788168770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242486592] [2022-11-02 21:03:41,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:03:41,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:41,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:41,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:41,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:03:41,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 21:03:41,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:41,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:03:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:03:42,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:03:42,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242486592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:42,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:42,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-02 21:03:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10685635] [2022-11-02 21:03:42,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:03:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:03:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:03:42,187 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2022-11-02 21:03:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:42,449 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-02 21:03:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:03:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 35 [2022-11-02 21:03:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:42,451 INFO L225 Difference]: With dead ends: 69 [2022-11-02 21:03:42,451 INFO L226 Difference]: Without dead ends: 53 [2022-11-02 21:03:42,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:42,452 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:42,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 27 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-02 21:03:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-11-02 21:03:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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) [2022-11-02 21:03:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-11-02 21:03:42,473 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 35 [2022-11-02 21:03:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:42,475 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-11-02 21:03:42,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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) [2022-11-02 21:03:42,475 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-11-02 21:03:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 21:03:42,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:42,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:42,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 21:03:42,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 315843584, now seen corresponding path program 7 times [2022-11-02 21:03:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:42,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643971019] [2022-11-02 21:03:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:42,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:47,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643971019] [2022-11-02 21:03:47,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643971019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:47,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885468130] [2022-11-02 21:03:47,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:03:47,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:47,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:47,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7eb0b47-5513-4bda-863c-508ec814a9aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:03:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-02 21:03:47,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:47,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:03:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:47,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 21:03:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-02 21:03:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-02 21:03:48,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:48,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:48,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-02 21:03:49,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:49,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-11-02 21:03:49,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2022-11-02 21:03:49,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:49,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:49,805 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 21:03:49,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-11-02 21:03:50,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:50,334 INFO L356 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-11-02 21:03:50,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 106 treesize of output 104 [2022-11-02 21:03:50,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:50,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:50,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:50,952 INFO L356 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-11-02 21:03:50,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 101 treesize of output 103 [2022-11-02 21:03:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:51,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-02 21:03:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:51,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 59 [2022-11-02 21:03:51,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:51,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-11-02 21:03:52,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:03:52,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2022-11-02 21:03:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:52,280 INFO L328 TraceCheckSpWp]: Computing backward predicates...