./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/nr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/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_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/nr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/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_fa7c1704-6cba-4bca-9743-85b959d02a2b/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 4885a4fffd0288753086daaa59bdb12816a7be62636dc49311bbb97ad277d866 --- 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 20:36:10,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:36:10,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:36:10,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:36:10,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:36:10,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:36:10,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:36:10,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:36:10,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:36:10,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:36:10,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:36:10,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:36:10,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:36:10,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:36:10,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:36:10,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:36:10,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:36:10,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:36:10,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:36:10,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:36:10,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:36:10,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:36:10,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:36:10,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:36:10,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:36:10,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:36:10,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:36:10,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:36:10,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:36:10,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:36:10,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:36:10,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:36:10,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:36:10,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:36:10,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:36:10,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:36:10,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:36:10,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:36:10,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:36:10,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:36:10,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:36:10,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:36:10,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:36:10,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:36:10,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:36:10,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:36:10,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:36:10,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:36:10,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:36:10,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:36:10,714 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:36:10,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:36:10,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:36:10,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:36:10,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:36:10,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:36:10,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:36:10,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:36:10,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:36:10,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:36:10,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:36:10,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:36:10,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:36:10,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:36:10,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:36:10,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:36:10,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:10,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:36:10,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:36:10,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:36:10,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:36:10,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:36:10,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:36:10,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:36:10,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:36:10,722 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_fa7c1704-6cba-4bca-9743-85b959d02a2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4885a4fffd0288753086daaa59bdb12816a7be62636dc49311bbb97ad277d866 [2022-11-02 20:36:10,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:36:11,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:36:11,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:36:11,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:36:11,015 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:36:11,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-tiling/nr3.c [2022-11-02 20:36:11,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/data/4962b716b/b79928c99a3747e7857d14c8e049775c/FLAGe3977b94b [2022-11-02 20:36:11,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:36:11,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/sv-benchmarks/c/array-tiling/nr3.c [2022-11-02 20:36:11,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/data/4962b716b/b79928c99a3747e7857d14c8e049775c/FLAGe3977b94b [2022-11-02 20:36:11,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/data/4962b716b/b79928c99a3747e7857d14c8e049775c [2022-11-02 20:36:11,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:36:11,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:36:11,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:11,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:36:11,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:36:11,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:11" (1/1) ... [2022-11-02 20:36:11,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690d8e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:11, skipping insertion in model container [2022-11-02 20:36:11,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:11" (1/1) ... [2022-11-02 20:36:11,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:36:11,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:36:12,135 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_fa7c1704-6cba-4bca-9743-85b959d02a2b/sv-benchmarks/c/array-tiling/nr3.c[394,407] [2022-11-02 20:36:12,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:12,177 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:36:12,193 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_fa7c1704-6cba-4bca-9743-85b959d02a2b/sv-benchmarks/c/array-tiling/nr3.c[394,407] [2022-11-02 20:36:12,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:12,226 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:36:12,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12 WrapperNode [2022-11-02 20:36:12,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:12,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:12,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:36:12,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:36:12,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,277 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-02 20:36:12,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:12,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:36:12,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:36:12,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:36:12,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:36:12,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:36:12,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:36:12,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:36:12,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (1/1) ... [2022-11-02 20:36:12,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:12,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:12,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:36:12,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:36:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:36:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:36:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:36:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:36:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:36:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:36:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:36:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:36:12,490 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:36:12,493 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:36:12,728 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:36:12,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:36:12,748 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:36:12,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:12 BoogieIcfgContainer [2022-11-02 20:36:12,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:36:12,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:36:12,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:36:12,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:36:12,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:36:11" (1/3) ... [2022-11-02 20:36:12,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfe7360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:12, skipping insertion in model container [2022-11-02 20:36:12,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:12" (2/3) ... [2022-11-02 20:36:12,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfe7360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:12, skipping insertion in model container [2022-11-02 20:36:12,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:12" (3/3) ... [2022-11-02 20:36:12,769 INFO L112 eAbstractionObserver]: Analyzing ICFG nr3.c [2022-11-02 20:36:12,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:36:12,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:36:12,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:36:12,889 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;@1db5eb9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:36:12,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:36:12,901 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 20:36:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:36:12,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:12,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:12,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2022-11-02 20:36:12,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:12,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136794834] [2022-11-02 20:36:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:13,157 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 20:36:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:13,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136794834] [2022-11-02 20:36:13,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136794834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:13,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:13,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:36:13,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811670270] [2022-11-02 20:36:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:36:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:36:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:36:13,208 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 20:36:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:13,229 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2022-11-02 20:36:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:36:13,233 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 20:36:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:13,244 INFO L225 Difference]: With dead ends: 45 [2022-11-02 20:36:13,244 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:36:13,247 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 20:36:13,253 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 20:36:13,255 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 20:36:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:36:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 20:36:13,290 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 20:36:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-02 20:36:13,293 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2022-11-02 20:36:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:13,294 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-02 20:36:13,295 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 20:36:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-02 20:36:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:36:13,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:13,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:13,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:36:13,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:13,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2022-11-02 20:36:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:13,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878292764] [2022-11-02 20:36:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:13,601 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 20:36:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878292764] [2022-11-02 20:36:13,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878292764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:13,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:13,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:36:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063675490] [2022-11-02 20:36:13,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:13,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:36:13,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:36:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:36:13,609 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 20:36:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:13,647 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-02 20:36:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:13,648 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 20:36:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:13,649 INFO L225 Difference]: With dead ends: 29 [2022-11-02 20:36:13,649 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:36:13,649 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 20:36:13,650 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 20:36:13,651 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 20:36:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:36:13,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-02 20:36:13,655 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 20:36:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-02 20:36:13,655 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2022-11-02 20:36:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:13,656 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-02 20:36:13,656 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 20:36:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-02 20:36:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:36:13,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:13,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:13,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:36:13,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2022-11-02 20:36:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:13,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910845434] [2022-11-02 20:36:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:13,940 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 20:36:13,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910845434] [2022-11-02 20:36:13,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910845434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:13,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:13,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:13,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778886146] [2022-11-02 20:36:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:13,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:36:13,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:13,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:36:13,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:36:13,946 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 20:36:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:14,015 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-02 20:36:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:14,016 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 20:36:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:14,018 INFO L225 Difference]: With dead ends: 38 [2022-11-02 20:36:14,019 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:36:14,020 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 20:36:14,027 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 20:36:14,027 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 20:36:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:36:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-02 20:36:14,032 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 20:36:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-02 20:36:14,033 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2022-11-02 20:36:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:14,033 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-02 20:36:14,033 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 20:36:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-02 20:36:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:36:14,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:14,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:14,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:36:14,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:14,035 INFO L85 PathProgramCache]: Analyzing trace with hash -715167033, now seen corresponding path program 1 times [2022-11-02 20:36:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:14,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362264204] [2022-11-02 20:36:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,129 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 20:36:14,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:14,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362264204] [2022-11-02 20:36:14,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362264204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:14,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:14,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:36:14,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274572634] [2022-11-02 20:36:14,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:14,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:36:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:36:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:36:14,132 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 20:36:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:14,150 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-02 20:36:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:36:14,151 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 20:36:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:14,152 INFO L225 Difference]: With dead ends: 42 [2022-11-02 20:36:14,152 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:36:14,152 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 20:36:14,153 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 20:36:14,154 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 20:36:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:36:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-02 20:36:14,159 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 20:36:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 20:36:14,159 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-11-02 20:36:14,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:14,160 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 20:36:14,160 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 20:36:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 20:36:14,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:36:14,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:14,161 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 20:36:14,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:36:14,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:14,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1618667584, now seen corresponding path program 1 times [2022-11-02 20:36:14,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:14,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39451717] [2022-11-02 20:36:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,244 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 20:36:14,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:14,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39451717] [2022-11-02 20:36:14,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39451717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:36:14,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037928764] [2022-11-02 20:36:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:14,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:14,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:14,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:14,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:36:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:36:14,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:14,391 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 20:36:14,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:14,412 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 20:36:14,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037928764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:14,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:36:14,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-02 20:36:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006417918] [2022-11-02 20:36:14,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:36:14,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:36:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:36:14,414 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 20:36:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:14,468 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2022-11-02 20:36:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:36:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 20:36:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:14,469 INFO L225 Difference]: With dead ends: 47 [2022-11-02 20:36:14,469 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 20:36:14,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:36:14,471 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:14,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 52 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:36:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 20:36:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-02 20:36:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 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 20:36:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-02 20:36:14,478 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 19 [2022-11-02 20:36:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:14,479 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-02 20:36:14,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 20:36:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-02 20:36:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:36:14,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:14,480 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:14,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:36:14,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:14,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1797589728, now seen corresponding path program 2 times [2022-11-02 20:36:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:14,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014131316] [2022-11-02 20:36:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:14,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014131316] [2022-11-02 20:36:14,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014131316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:36:14,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920034848] [2022-11-02 20:36:14,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:36:14,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:14,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:14,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:14,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:36:14,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:36:14,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:36:14,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:36:14,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:15,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:15,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920034848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:15,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:36:15,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-02 20:36:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104622512] [2022-11-02 20:36:15,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:15,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:36:15,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:15,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:36:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:36:15,065 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 20:36:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:15,112 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2022-11-02 20:36:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:36:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 20:36:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:15,114 INFO L225 Difference]: With dead ends: 53 [2022-11-02 20:36:15,115 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 20:36:15,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:36:15,121 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:15,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:36:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 20:36:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-02 20:36:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-02 20:36:15,141 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 25 [2022-11-02 20:36:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:15,142 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-02 20:36:15,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 20:36:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-02 20:36:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:36:15,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:15,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:15,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:15,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1796312990, now seen corresponding path program 1 times [2022-11-02 20:36:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:15,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435132245] [2022-11-02 20:36:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:16,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435132245] [2022-11-02 20:36:16,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435132245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:36:16,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474151160] [2022-11-02 20:36:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:16,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:16,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:36:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:16,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:36:16,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:16,515 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 20:36:16,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:36:16,623 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 20:36:16,716 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-02 20:36:16,717 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 24 treesize of output 29 [2022-11-02 20:36:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:17,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:35,710 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 55 treesize of output 51 [2022-11-02 20:36:35,722 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 307 treesize of output 299 [2022-11-02 20:36:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:36:38,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474151160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:38,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:36:38,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 33 [2022-11-02 20:36:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078122086] [2022-11-02 20:36:38,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:38,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-02 20:36:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-02 20:36:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=892, Unknown=4, NotChecked=0, Total=1056 [2022-11-02 20:36:38,129 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 20:36:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:43,148 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2022-11-02 20:36:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:36:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 20:36:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:43,150 INFO L225 Difference]: With dead ends: 85 [2022-11-02 20:36:43,150 INFO L226 Difference]: Without dead ends: 62 [2022-11-02 20:36:43,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=343, Invalid=1632, Unknown=5, NotChecked=0, Total=1980 [2022-11-02 20:36:43,152 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:43,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 204 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 314 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2022-11-02 20:36:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-02 20:36:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 34. [2022-11-02 20:36:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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 20:36:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-11-02 20:36:43,162 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 25 [2022-11-02 20:36:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:43,163 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-11-02 20:36:43,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 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 20:36:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-11-02 20:36:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:36:43,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:43,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:43,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:36:43,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:36:43,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1325174645, now seen corresponding path program 1 times [2022-11-02 20:36:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:43,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746263663] [2022-11-02 20:36:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:43,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746263663] [2022-11-02 20:36:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746263663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:36:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059940574] [2022-11-02 20:36:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:44,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:44,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:44,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:44,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:36:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:36:44,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:44,214 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 20:36:44,285 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 20:36:44,286 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 20:36:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:44,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:48,642 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 39 treesize of output 35 [2022-11-02 20:36:48,646 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 63 treesize of output 55 [2022-11-02 20:36:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:36:48,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059940574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:48,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:36:48,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 31 [2022-11-02 20:36:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608699667] [2022-11-02 20:36:48,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:48,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:36:48,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:48,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:36:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:36:48,801 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:49,494 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2022-11-02 20:36:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:36:49,494 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 20:36:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:49,498 INFO L225 Difference]: With dead ends: 118 [2022-11-02 20:36:49,498 INFO L226 Difference]: Without dead ends: 93 [2022-11-02 20:36:49,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 20:36:49,502 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:49,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 229 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 188 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-11-02 20:36:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-02 20:36:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2022-11-02 20:36:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 76 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 20:36:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-11-02 20:36:49,541 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 31 [2022-11-02 20:36:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-02 20:36:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-11-02 20:36:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:36:49,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:49,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:49,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:49,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:36:49,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 932147635, now seen corresponding path program 1 times [2022-11-02 20:36:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692524317] [2022-11-02 20:36:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692524317] [2022-11-02 20:36:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692524317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:36:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535727375] [2022-11-02 20:36:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:50,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:50,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:50,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:36:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:50,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:36:50,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:50,490 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 20:36:50,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:36:50,590 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 20:36:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:36:50,651 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 20:36:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:50,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:12,143 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 38 treesize of output 36 [2022-11-02 20:37:12,149 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 338 treesize of output 334 [2022-11-02 20:37:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:12,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535727375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:12,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:37:12,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2022-11-02 20:37:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554571610] [2022-11-02 20:37:12,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:12,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:37:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:37:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=729, Unknown=11, NotChecked=0, Total=870 [2022-11-02 20:37:12,266 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 30 states have internal predecessors, (77), 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 20:37:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:13,188 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2022-11-02 20:37:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:37:13,188 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 20:37:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:13,192 INFO L225 Difference]: With dead ends: 136 [2022-11-02 20:37:13,198 INFO L226 Difference]: Without dead ends: 126 [2022-11-02 20:37:13,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=334, Invalid=1725, Unknown=11, NotChecked=0, Total=2070 [2022-11-02 20:37:13,200 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 190 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:13,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 183 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 386 Invalid, 0 Unknown, 112 Unchecked, 0.3s Time] [2022-11-02 20:37:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-02 20:37:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 80. [2022-11-02 20:37:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 79 states have internal predecessors, (96), 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 20:37:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2022-11-02 20:37:13,221 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 31 [2022-11-02 20:37:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:13,221 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2022-11-02 20:37:13,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 30 states have internal predecessors, (77), 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 20:37:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2022-11-02 20:37:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:37:13,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:13,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:13,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:13,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:13,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:13,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1798450104, now seen corresponding path program 2 times [2022-11-02 20:37:13,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:13,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876252631] [2022-11-02 20:37:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:13,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876252631] [2022-11-02 20:37:13,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876252631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:13,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97090411] [2022-11-02 20:37:13,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:37:13,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:13,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:13,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:13,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:37:13,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:37:13,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:13,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:37:13,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:14,029 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 20:37:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:14,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:14,301 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 19 treesize of output 17 [2022-11-02 20:37:14,304 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 28 treesize of output 24 [2022-11-02 20:37:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:14,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97090411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:14,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:37:14,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 23 [2022-11-02 20:37:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505401007] [2022-11-02 20:37:14,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:14,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:37:14,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:37:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:37:14,527 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:16,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:16,857 INFO L93 Difference]: Finished difference Result 264 states and 310 transitions. [2022-11-02 20:37:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-02 20:37:16,858 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 20:37:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:16,860 INFO L225 Difference]: With dead ends: 264 [2022-11-02 20:37:16,860 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:37:16,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=921, Invalid=4481, Unknown=0, NotChecked=0, Total=5402 [2022-11-02 20:37:16,862 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 268 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:16,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 218 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:37:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:37:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 119. [2022-11-02 20:37:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.2372881355932204) internal successors, (146), 118 states have internal predecessors, (146), 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 20:37:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2022-11-02 20:37:16,915 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 37 [2022-11-02 20:37:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:16,916 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2022-11-02 20:37:16,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2022-11-02 20:37:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:37:16,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:16,921 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:16,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 20:37:17,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:17,139 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash 996077275, now seen corresponding path program 3 times [2022-11-02 20:37:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:17,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005221635] [2022-11-02 20:37:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:17,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:37:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005221635] [2022-11-02 20:37:17,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005221635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002158635] [2022-11-02 20:37:17,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:37:17,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:17,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:17,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:17,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:37:17,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:37:17,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:17,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:37:17,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:37:18,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:37:18,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002158635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:18,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:37:18,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2022-11-02 20:37:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736828678] [2022-11-02 20:37:18,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:37:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:37:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:37:18,657 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 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 20:37:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:19,026 INFO L93 Difference]: Finished difference Result 182 states and 219 transitions. [2022-11-02 20:37:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:37:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-02 20:37:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:19,030 INFO L225 Difference]: With dead ends: 182 [2022-11-02 20:37:19,030 INFO L226 Difference]: Without dead ends: 152 [2022-11-02 20:37:19,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:37:19,032 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 239 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:19,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 165 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:37:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-02 20:37:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 110. [2022-11-02 20:37:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.238532110091743) internal successors, (135), 109 states have internal predecessors, (135), 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 20:37:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2022-11-02 20:37:19,085 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 43 [2022-11-02 20:37:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:19,086 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2022-11-02 20:37:19,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 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 20:37:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2022-11-02 20:37:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:37:19,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:19,088 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:19,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:19,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:37:19,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -218220002, now seen corresponding path program 4 times [2022-11-02 20:37:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326359553] [2022-11-02 20:37:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:20,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:20,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326359553] [2022-11-02 20:37:20,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326359553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851571121] [2022-11-02 20:37:20,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:37:20,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:20,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:20,717 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:20,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c1704-6cba-4bca-9743-85b959d02a2b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:37:20,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:37:20,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:20,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:37:20,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:20,950 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 20:37:21,040 INFO L356 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2022-11-02 20:37:21,040 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 31 treesize of output 36 [2022-11-02 20:37:21,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:37:21,418 INFO L356 Elim1Store]: treesize reduction 38, result has 40.6 percent of original size [2022-11-02 20:37:21,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 61 [2022-11-02 20:37:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:37:21,585 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 38 treesize of output 31 [2022-11-02 20:37:21,699 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-02 20:37:21,699 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 38 treesize of output 41 [2022-11-02 20:37:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:32,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:54,372 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse0 (select (let ((.cse1 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse0 1)) (= .cse0 0)))) (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)))) is different from false [2022-11-02 20:39:34,236 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 101 treesize of output 97 [2022-11-02 20:39:34,245 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 1611 treesize of output 1595 [2022-11-02 20:39:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 58 refuted. 4 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-02 20:39:38,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851571121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:38,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:38,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 18] total 51 [2022-11-02 20:39:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749329532] [2022-11-02 20:39:38,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-02 20:39:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:38,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-02 20:39:38,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2064, Unknown=60, NotChecked=96, Total=2550 [2022-11-02 20:39:38,159 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 51 states, 51 states have (on average 2.3529411764705883) internal successors, (120), 51 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:53,943 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (and (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (let ((.cse0 (select .cse1 .cse2))) (or (and (<= 2 .cse0) (exists ((|ULTIMATE.start_main_~j~0#1| Int)) (= (select .cse1 (+ (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0))) (= .cse0 0))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (<= (+ 6 (div (- |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 4)) (* 3 |c_ULTIMATE.start_main_~i~0#1|)) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (<= 2 (select .cse1 4)) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse3 (select (let ((.cse4 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse2))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse3 1)) (= .cse3 0)))) (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)))))) is different from false [2022-11-02 20:40:03,362 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (and (let ((.cse0 (select .cse1 .cse2))) (or (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse0 1)) (= .cse0 0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_55| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_55|)) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)) (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse3 (select (let ((.cse4 (* |v_ULTIMATE.start_main_~i~0#1_55| 12))) (store (store .cse1 (+ .cse4 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ .cse4 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse2))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse3 1)) (= .cse3 0)))))))))) is different from false [2022-11-02 20:40:05,367 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (and (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (let ((.cse0 (select .cse1 4))) (or (= .cse0 0) (<= 2 .cse0))) (let ((.cse2 (select .cse1 .cse3))) (or (and (<= 2 .cse2) (exists ((|ULTIMATE.start_main_~j~0#1| Int)) (= (select .cse1 (+ (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0))) (= .cse2 0))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse4 (select (let ((.cse5 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse5 (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse5 (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse3))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse4 1)) (= .cse4 0)))) (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)))))) is different from false [2022-11-02 20:40:13,303 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse3 (select .cse1 4))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) (.cse6 (* 12 |c_ULTIMATE.start_main_~i~0#1|)) (.cse4 (<= 2 .cse3))) (and (let ((.cse0 (select .cse1 .cse2))) (or (<= 2 .cse0) (= .cse0 0))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (or (= .cse3 0) .cse4) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (|v_ULTIMATE.start_main_~j~0#1_48| Int) (v_ArrVal_164 Int) (|v_ULTIMATE.start_main_~i~0#1_55| Int)) (let ((.cse5 (select (let ((.cse7 (* |v_ULTIMATE.start_main_~i~0#1_55| 12))) (store (store (store .cse1 (+ (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6) 0) (+ .cse7 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ .cse7 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse2))) (or (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse5 1)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_55|)) (= .cse5 0) (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)) (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|))))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (exists ((|ULTIMATE.start_main_~j~0#1| Int) (|ULTIMATE.start_main_~i~0#1| Int)) (and (<= 2 |ULTIMATE.start_main_~i~0#1|) (= (select .cse1 (+ (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 12))) 0))) (or (= (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6) (+ (* |c_ULTIMATE.start_main_~j~0#1| 4) 4)) .cse4))))) is different from false [2022-11-02 20:40:15,312 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (and (let ((.cse0 (select .cse1 .cse2))) (or (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse0 1)) (= .cse0 0))) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse3 (select (let ((.cse4 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse2))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse3 1)) (= .cse3 0)))) (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)))))) is different from false [2022-11-02 20:40:17,316 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (let ((.cse0 (select .cse1 .cse2))) (or (<= 2 .cse0) (= .cse0 0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_55| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_55|)) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)) (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse3 (select (let ((.cse4 (* |v_ULTIMATE.start_main_~i~0#1_55| 12))) (store (store .cse1 (+ .cse4 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ .cse4 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse2))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse3 1)) (= .cse3 0)))))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (exists ((|ULTIMATE.start_main_~j~0#1| Int) (|ULTIMATE.start_main_~i~0#1| Int)) (and (<= 2 |ULTIMATE.start_main_~i~0#1|) (= (select .cse1 (+ (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 12))) 0))))) is different from false [2022-11-02 20:40:23,413 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_55| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_55|)) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)) (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse0 (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_55| 12))) (store (store .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse0 1)) (= .cse0 0)))))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (or (let ((.cse3 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (and (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse3)) 0) (= (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3) (+ (* |c_ULTIMATE.start_main_~j~0#1| 4) 4)))) (<= 2 (select .cse1 4))))) is different from false [2022-11-02 20:40:25,624 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_55| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_55|)) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)) (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse0 (select (let ((.cse2 (* |v_ULTIMATE.start_main_~i~0#1_55| 12))) (store (store .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse0 1)) (= .cse0 0)))))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (let ((.cse3 (select .cse1 4))) (or (= .cse3 0) (<= 2 .cse3))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|))) is different from false [2022-11-02 20:40:30,112 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (and (let ((.cse0 (select .cse1 .cse2))) (or (<= 2 .cse0) (= .cse0 0))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= (+ 6 (div (- |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 4)) (* 3 |c_ULTIMATE.start_main_~i~0#1|)) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (<= 2 (select .cse1 4)) (exists ((|ULTIMATE.start_main_~j~0#1| Int) (|ULTIMATE.start_main_~i~0#1| Int)) (and (<= 2 |ULTIMATE.start_main_~i~0#1|) (= (select .cse1 (+ (* |ULTIMATE.start_main_~j~0#1| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 12))) 0))) (forall ((|v_ULTIMATE.start_main_~j~0#1_48| Int)) (or (forall ((v_ArrVal_166 Int) (|v_ULTIMATE.start_main_~j~0#1_47| Int) (v_ArrVal_164 Int)) (let ((.cse3 (select (let ((.cse4 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_48| (- 4))) v_ArrVal_164) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_47| (- 4))) v_ArrVal_166)) .cse2))) (or (not (<= (+ |v_ULTIMATE.start_main_~j~0#1_47| 1) |v_ULTIMATE.start_main_~j~0#1_48|)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ .cse3 1)) (= .cse3 0)))) (not (<= |v_ULTIMATE.start_main_~j~0#1_48| 3)))))) is different from false