./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/nr4.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_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/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_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/nr4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/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_6811527a-fadd-401b-8a31-7614cddd0a28/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 3219130777e42bfc39497c312a66c6d1b1af231a6df358861eaa545434d20cb1 --- 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 20:43:29,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:29,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:29,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:29,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:29,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:29,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:29,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:29,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:29,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:29,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:29,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:29,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:29,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:29,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:29,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:29,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:29,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:29,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:29,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:29,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:29,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:29,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:29,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:29,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:29,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:29,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:29,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:29,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:29,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:29,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:29,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:29,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:29,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:29,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:29,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:29,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:29,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:29,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:29,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:29,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:29,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:43:29,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:29,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:29,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:29,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:29,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:29,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:29,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:29,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:29,484 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:29,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:29,486 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:43:29,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:29,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:43:29,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:29,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:29,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:29,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:29,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:43:29,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:29,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:29,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:29,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:29,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:29,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:29,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:29,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:29,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:29,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:29,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:29,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:29,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:43:29,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:43:29,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:29,491 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_6811527a-fadd-401b-8a31-7614cddd0a28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3219130777e42bfc39497c312a66c6d1b1af231a6df358861eaa545434d20cb1 [2022-11-02 20:43:29,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:29,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:29,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:29,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:29,807 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:29,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-tiling/nr4.c [2022-11-02 20:43:29,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/data/c3d4286b5/0e20188ee9bf4c90a5b8f761eca6842d/FLAG38ea6fdf4 [2022-11-02 20:43:30,414 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:30,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/sv-benchmarks/c/array-tiling/nr4.c [2022-11-02 20:43:30,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/data/c3d4286b5/0e20188ee9bf4c90a5b8f761eca6842d/FLAG38ea6fdf4 [2022-11-02 20:43:30,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/data/c3d4286b5/0e20188ee9bf4c90a5b8f761eca6842d [2022-11-02 20:43:30,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:30,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:30,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:30,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:30,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:30,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:30" (1/1) ... [2022-11-02 20:43:30,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5943e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:30, skipping insertion in model container [2022-11-02 20:43:30,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:30" (1/1) ... [2022-11-02 20:43:30,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:30,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:31,007 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_6811527a-fadd-401b-8a31-7614cddd0a28/sv-benchmarks/c/array-tiling/nr4.c[394,407] [2022-11-02 20:43:31,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:31,046 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:31,062 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_6811527a-fadd-401b-8a31-7614cddd0a28/sv-benchmarks/c/array-tiling/nr4.c[394,407] [2022-11-02 20:43:31,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:31,100 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:31,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31 WrapperNode [2022-11-02 20:43:31,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:31,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:31,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:31,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:31,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,155 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-02 20:43:31,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:31,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:31,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:31,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:31,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:31,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:31,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:31,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:31,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (1/1) ... [2022-11-02 20:43:31,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:31,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:31,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:31,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:43:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:43:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:43:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:43:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:31,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:43:31,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:43:31,389 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:31,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:43:31,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:43:31,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:43:31,610 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:43:31,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:31 BoogieIcfgContainer [2022-11-02 20:43:31,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:43:31,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:43:31,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:43:31,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:43:31,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:30" (1/3) ... [2022-11-02 20:43:31,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa926cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:31, skipping insertion in model container [2022-11-02 20:43:31,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:31" (2/3) ... [2022-11-02 20:43:31,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa926cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:31, skipping insertion in model container [2022-11-02 20:43:31,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:31" (3/3) ... [2022-11-02 20:43:31,621 INFO L112 eAbstractionObserver]: Analyzing ICFG nr4.c [2022-11-02 20:43:31,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:43:31,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:43:31,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:43:31,773 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;@17de1a43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:43:31,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:43:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:43:31,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:31,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:31,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:31,821 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2022-11-02 20:43:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:31,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197016031] [2022-11-02 20:43:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:31,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:32,088 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 20:43:32,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:32,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197016031] [2022-11-02 20:43:32,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197016031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:32,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:32,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775849345] [2022-11-02 20:43:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:32,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:43:32,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:43:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:43:32,143 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:32,166 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2022-11-02 20:43:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:43:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:43:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:32,178 INFO L225 Difference]: With dead ends: 45 [2022-11-02 20:43:32,179 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:43:32,185 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 20:43:32,190 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:32,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:43:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 20:43:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-02 20:43:32,230 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2022-11-02 20:43:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:32,231 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-02 20:43:32,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-02 20:43:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:43:32,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:32,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:43:32,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2022-11-02 20:43:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:32,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364019404] [2022-11-02 20:43:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:32,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:32,524 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 20:43:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364019404] [2022-11-02 20:43:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364019404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:32,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:32,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:43:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461356005] [2022-11-02 20:43:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:32,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:43:32,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:43:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:43:32,528 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:32,588 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-02 20:43:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:43:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:32,589 INFO L225 Difference]: With dead ends: 29 [2022-11-02 20:43:32,589 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:43:32,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:32,591 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:32,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 62 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:43:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-02 20:43:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-02 20:43:32,597 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2022-11-02 20:43:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:32,597 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-02 20:43:32,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-02 20:43:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:43:32,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:32,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:32,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:43:32,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2022-11-02 20:43:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145855176] [2022-11-02 20:43:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:32,823 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 20:43:32,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:32,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145855176] [2022-11-02 20:43:32,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145855176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:32,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:32,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:32,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318915606] [2022-11-02 20:43:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:32,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:32,827 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:32,870 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-02 20:43:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:43:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:32,871 INFO L225 Difference]: With dead ends: 38 [2022-11-02 20:43:32,871 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:43:32,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:32,873 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:32,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 27 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:43:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-02 20:43:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-02 20:43:32,881 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2022-11-02 20:43:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:32,881 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-02 20:43:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-02 20:43:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:43:32,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:32,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:43:32,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -715167033, now seen corresponding path program 1 times [2022-11-02 20:43:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:32,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167387411] [2022-11-02 20:43:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:32,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:32,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167387411] [2022-11-02 20:43:32,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167387411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:32,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:32,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334907224] [2022-11-02 20:43:32,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:32,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:32,943 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:32,965 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-02 20:43:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:32,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:43:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:32,968 INFO L225 Difference]: With dead ends: 42 [2022-11-02 20:43:32,968 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:43:32,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:32,970 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:32,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:43:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-02 20:43:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 20:43:32,978 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-11-02 20:43:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:32,979 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 20:43:32,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 20:43:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:43:32,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:32,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:32,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:43:32,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1618667584, now seen corresponding path program 1 times [2022-11-02 20:43:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:33,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968163129] [2022-11-02 20:43:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968163129] [2022-11-02 20:43:33,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968163129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:33,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489415559] [2022-11-02 20:43:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:33,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:33,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:33,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:43:33,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:33,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:33,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489415559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:33,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:33,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-02 20:43:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749656833] [2022-11-02 20:43:33,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:33,318 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:33,366 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-11-02 20:43:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:43:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:33,367 INFO L225 Difference]: With dead ends: 50 [2022-11-02 20:43:33,368 INFO L226 Difference]: Without dead ends: 33 [2022-11-02 20:43:33,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:33,369 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:33,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 68 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-02 20:43:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-02 20:43:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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 20:43:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-02 20:43:33,378 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2022-11-02 20:43:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:33,378 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-02 20:43:33,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-02 20:43:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:43:33,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:33,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:33,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:33,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:33,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2124634745, now seen corresponding path program 2 times [2022-11-02 20:43:33,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:33,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237318155] [2022-11-02 20:43:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:33,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237318155] [2022-11-02 20:43:33,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237318155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268402697] [2022-11-02 20:43:33,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:43:33,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:33,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:33,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:33,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:33,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:43:33,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:33,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:43:33,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:34,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:34,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268402697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:34,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:34,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-02 20:43:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116669428] [2022-11-02 20:43:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:34,094 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:34,184 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-11-02 20:43:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:43:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:43:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:34,187 INFO L225 Difference]: With dead ends: 59 [2022-11-02 20:43:34,187 INFO L226 Difference]: Without dead ends: 33 [2022-11-02 20:43:34,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:34,189 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:34,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:43:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-02 20:43:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-02 20:43:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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 20:43:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-02 20:43:34,198 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2022-11-02 20:43:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:34,198 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-02 20:43:34,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-02 20:43:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:43:34,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:34,200 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:34,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:34,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:34,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1423570167, now seen corresponding path program 1 times [2022-11-02 20:43:34,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:34,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251750428] [2022-11-02 20:43:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:34,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:35,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:35,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251750428] [2022-11-02 20:43:35,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251750428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:35,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405214523] [2022-11-02 20:43:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:35,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:35,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:35,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:35,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:43:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:35,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:43:35,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:35,956 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 18 treesize of output 14 [2022-11-02 20:43:36,076 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 36 treesize of output 35 [2022-11-02 20:43:36,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:43:36,151 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 31 treesize of output 30 [2022-11-02 20:43:36,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:43:36,228 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 24 treesize of output 23 [2022-11-02 20:43:36,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:43:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:36,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:50,606 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_20| Int) (v_ArrVal_64 Int) (v_ArrVal_62 Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_20| 1) |c_ULTIMATE.start_main_~j~0#1|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 16 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_62) (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_20| (- 4))) v_ArrVal_64)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)))) is different from false [2022-11-02 20:43:52,660 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_21| Int)) (or (forall ((|v_ULTIMATE.start_main_~j~0#1_20| Int) (v_ArrVal_64 Int) (v_ArrVal_62 Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_20| 1) |v_ULTIMATE.start_main_~j~0#1_21|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 16 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_21| (- 4))) v_ArrVal_62) (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_20| (- 4))) v_ArrVal_64)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)))) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_21| 1) |c_ULTIMATE.start_main_~j~0#1|)))) is different from false [2022-11-02 20:44:08,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2022-11-02 20:44:08,408 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 730 treesize of output 726 [2022-11-02 20:44:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-02 20:44:10,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405214523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:10,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:10,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 14] total 36 [2022-11-02 20:44:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456550599] [2022-11-02 20:44:10,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:10,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:44:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:44:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=913, Unknown=13, NotChecked=130, Total=1260 [2022-11-02 20:44:10,846 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 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 20:44:13,005 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (* 16 |c_ULTIMATE.start_main_~i~0#1|))) (and (<= 4 (+ (div |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4) .cse0)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select .cse1 (+ .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) 1)) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~j~0#1| 3) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= (+ |c_ULTIMATE.start_main_~j~0#1| 1) (select .cse1 (+ .cse2 (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4))))) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (= (select .cse1 0) 4) (= |c_ULTIMATE.start_main_~j~0#1| 3) (forall ((|v_ULTIMATE.start_main_~j~0#1_21| Int)) (or (forall ((|v_ULTIMATE.start_main_~j~0#1_20| Int) (v_ArrVal_64 Int) (v_ArrVal_62 Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_20| 1) |v_ULTIMATE.start_main_~j~0#1_21|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store (store .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_21| (- 4))) v_ArrVal_62) (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_20| (- 4))) v_ArrVal_64) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)))) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_21| 1) |c_ULTIMATE.start_main_~j~0#1|)))) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from false [2022-11-02 20:44:15,136 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* 16 |c_ULTIMATE.start_main_~i~0#1|))) (and (<= 4 (+ (div |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4) (* |c_ULTIMATE.start_main_~i~0#1| 4))) (<= 4 (select .cse0 (+ (- 16) .cse1 |c_ULTIMATE.start_main_~#volArray~0#1.offset|))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~j~0#1| 2) (<= |c_ULTIMATE.start_main_~j~0#1| 3) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (= (select .cse0 0) 4) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| |c_ULTIMATE.start_main_~j~0#1|) (forall ((|v_ULTIMATE.start_main_~j~0#1_21| Int)) (or (forall ((|v_ULTIMATE.start_main_~j~0#1_20| Int) (v_ArrVal_64 Int) (v_ArrVal_62 Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_20| 1) |v_ULTIMATE.start_main_~j~0#1_21|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store (store .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_21| (- 4))) v_ArrVal_62) (+ .cse1 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_20| (- 4))) v_ArrVal_64) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)))) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_21| 1) |c_ULTIMATE.start_main_~j~0#1|)))) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from false [2022-11-02 20:44:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:17,102 INFO L93 Difference]: Finished difference Result 184 states and 220 transitions. [2022-11-02 20:44:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:44:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:44:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:17,105 INFO L225 Difference]: With dead ends: 184 [2022-11-02 20:44:17,105 INFO L226 Difference]: Without dead ends: 158 [2022-11-02 20:44:17,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 66 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=752, Invalid=3281, Unknown=15, NotChecked=508, Total=4556 [2022-11-02 20:44:17,108 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 399 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:17,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 186 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 420 Invalid, 0 Unknown, 326 Unchecked, 0.5s Time] [2022-11-02 20:44:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-02 20:44:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 75. [2022-11-02 20:44:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 74 states have internal predecessors, (92), 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 20:44:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-11-02 20:44:17,131 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 28 [2022-11-02 20:44:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:17,131 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-11-02 20:44:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 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 20:44:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-11-02 20:44:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 20:44:17,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:17,133 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:17,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:17,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:44:17,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:17,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1580642084, now seen corresponding path program 1 times [2022-11-02 20:44:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:17,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296165831] [2022-11-02 20:44:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:17,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:18,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296165831] [2022-11-02 20:44:18,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296165831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:18,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583116019] [2022-11-02 20:44:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:18,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:18,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:18,388 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:18,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:44:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:44:18,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:18,633 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 18 treesize of output 14 [2022-11-02 20:44:18,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:18,746 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 31 treesize of output 30 [2022-11-02 20:44:18,820 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 20:44:18,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 31 [2022-11-02 20:44:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:19,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:45,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2022-11-02 20:44:45,723 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 163 treesize of output 155 [2022-11-02 20:44:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:44:47,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583116019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:47,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:47,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 14] total 39 [2022-11-02 20:44:47,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114850403] [2022-11-02 20:44:47,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:47,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 20:44:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:47,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 20:44:47,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1276, Unknown=10, NotChecked=0, Total=1482 [2022-11-02 20:44:47,943 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 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 20:44:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:54,490 INFO L93 Difference]: Finished difference Result 181 states and 222 transitions. [2022-11-02 20:44:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 20:44:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-02 20:44:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:54,492 INFO L225 Difference]: With dead ends: 181 [2022-11-02 20:44:54,492 INFO L226 Difference]: Without dead ends: 179 [2022-11-02 20:44:54,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=525, Invalid=3624, Unknown=11, NotChecked=0, Total=4160 [2022-11-02 20:44:54,498 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:54,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 376 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 478 Invalid, 0 Unknown, 252 Unchecked, 0.4s Time] [2022-11-02 20:44:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-02 20:44:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 135. [2022-11-02 20:44:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 134 states have internal predecessors, (171), 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 20:44:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 171 transitions. [2022-11-02 20:44:54,525 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 171 transitions. Word has length 34 [2022-11-02 20:44:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:54,525 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 171 transitions. [2022-11-02 20:44:54,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 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 20:44:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 171 transitions. [2022-11-02 20:44:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:44:54,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:54,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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 20:44:54,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:54,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:44:54,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2045226095, now seen corresponding path program 2 times [2022-11-02 20:44:54,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:54,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140222211] [2022-11-02 20:44:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:55,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140222211] [2022-11-02 20:44:55,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140222211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:55,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823004024] [2022-11-02 20:44:55,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:44:55,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:55,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:55,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:55,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:44:55,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:44:55,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:44:55,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:44:55,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:55,614 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 16 treesize of output 12 [2022-11-02 20:44:55,678 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 20:44:55,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 31 [2022-11-02 20:44:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:56,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:03,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-02 20:45:03,951 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 67 treesize of output 59 [2022-11-02 20:45:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:45:04,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823004024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:04,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:04,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 35 [2022-11-02 20:45:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050013779] [2022-11-02 20:45:04,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:04,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:45:04,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:45:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:45:04,122 INFO L87 Difference]: Start difference. First operand 135 states and 171 transitions. Second operand has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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 20:45:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:05,138 INFO L93 Difference]: Finished difference Result 287 states and 365 transitions. [2022-11-02 20:45:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:45:05,139 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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 40 [2022-11-02 20:45:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:05,141 INFO L225 Difference]: With dead ends: 287 [2022-11-02 20:45:05,141 INFO L226 Difference]: Without dead ends: 172 [2022-11-02 20:45:05,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=393, Invalid=2469, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 20:45:05,143 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:05,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 309 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 283 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-11-02 20:45:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-02 20:45:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2022-11-02 20:45:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.25625) internal successors, (201), 160 states have internal predecessors, (201), 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 20:45:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2022-11-02 20:45:05,209 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 40 [2022-11-02 20:45:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2022-11-02 20:45:05,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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 20:45:05,210 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2022-11-02 20:45:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:45:05,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:05,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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 20:45:05,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:05,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:05,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1652199085, now seen corresponding path program 3 times [2022-11-02 20:45:05,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:05,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106587378] [2022-11-02 20:45:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:06,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:06,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106587378] [2022-11-02 20:45:06,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106587378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:06,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561289004] [2022-11-02 20:45:06,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:45:06,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:06,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:06,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:06,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:45:06,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:45:06,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:06,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:45:06,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:06,155 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 18 treesize of output 14 [2022-11-02 20:45:06,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-11-02 20:45:06,718 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-02 20:45:06,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-02 20:45:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:45:06,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:07,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-02 20:45:07,097 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 90 treesize of output 86 [2022-11-02 20:45:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:45:07,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561289004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:07,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:07,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2022-11-02 20:45:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416360291] [2022-11-02 20:45:07,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:07,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:45:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:45:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:45:07,163 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 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 20:45:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:08,187 INFO L93 Difference]: Finished difference Result 203 states and 247 transitions. [2022-11-02 20:45:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 20:45:08,188 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 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 40 [2022-11-02 20:45:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:08,189 INFO L225 Difference]: With dead ends: 203 [2022-11-02 20:45:08,189 INFO L226 Difference]: Without dead ends: 193 [2022-11-02 20:45:08,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=583, Invalid=2279, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 20:45:08,191 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 192 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:08,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 263 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 323 Invalid, 0 Unknown, 140 Unchecked, 0.3s Time] [2022-11-02 20:45:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-02 20:45:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 161. [2022-11-02 20:45:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.25625) internal successors, (201), 160 states have internal predecessors, (201), 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 20:45:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2022-11-02 20:45:08,220 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 40 [2022-11-02 20:45:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:08,220 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2022-11-02 20:45:08,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 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 20:45:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2022-11-02 20:45:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:45:08,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:08,222 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:08,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:08,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:08,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash 189819769, now seen corresponding path program 2 times [2022-11-02 20:45:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:08,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474518818] [2022-11-02 20:45:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:08,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 2 proven. 102 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:10,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474518818] [2022-11-02 20:45:10,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474518818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:10,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478246552] [2022-11-02 20:45:10,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:10,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:10,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:10,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6811527a-fadd-401b-8a31-7614cddd0a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:45:10,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:45:10,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:10,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:45:10,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:10,845 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 18 treesize of output 14 [2022-11-02 20:45:10,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:10,953 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 31 treesize of output 30 [2022-11-02 20:45:11,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,036 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 31 treesize of output 30 [2022-11-02 20:45:11,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,122 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 31 treesize of output 30 [2022-11-02 20:45:11,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,301 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 26 treesize of output 25 [2022-11-02 20:45:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,449 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:11,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-02 20:45:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,555 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:11,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-02 20:45:11,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:11,672 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:11,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-02 20:45:12,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:12,024 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:12,025 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 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-02 20:45:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:12,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:50,014 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_57| Int)) (or (forall ((v_ArrVal_189 Int) (v_ArrVal_188 Int) (|v_ULTIMATE.start_main_~j~0#1_56| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_56| 1) |v_ULTIMATE.start_main_~j~0#1_57|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 16 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_57| (- 4)) .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_188) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_56| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_189)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)))) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_57| 1) |c_ULTIMATE.start_main_~j~0#1|)))) is different from false [2022-11-02 20:46:04,859 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_58| Int)) (or (forall ((v_ArrVal_189 Int) (|v_ULTIMATE.start_main_~j~0#1_57| Int) (v_ArrVal_188 Int) (v_ArrVal_185 Int) (|v_ULTIMATE.start_main_~j~0#1_56| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_56| 1) |v_ULTIMATE.start_main_~j~0#1_57|)) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_57| 1) |v_ULTIMATE.start_main_~j~0#1_58|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 16 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_58| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_185) (+ (* |v_ULTIMATE.start_main_~j~0#1_57| (- 4)) .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_188) (+ .cse0 (* |v_ULTIMATE.start_main_~j~0#1_56| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_189)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 1)))) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_58| 1) |c_ULTIMATE.start_main_~j~0#1|)))) is different from false