./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/hash_fun.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/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_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/hash_fun.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/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_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/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 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b --- 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 19:55:16,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:55:16,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:55:16,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:55:16,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:55:16,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:55:16,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:55:16,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:55:16,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:55:16,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:55:16,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:55:16,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:55:16,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:55:16,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:55:16,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:55:16,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:55:16,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:55:16,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:55:16,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:55:16,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:55:16,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:55:16,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:55:16,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:55:16,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:55:16,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:55:16,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:55:16,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:55:16,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:55:16,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:55:16,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:55:16,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:55:16,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:55:16,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:55:16,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:55:16,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:55:16,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:55:16,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:55:16,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:55:16,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:55:16,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:55:16,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:55:16,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:55:16,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:55:16,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:55:16,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:55:16,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:55:16,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:55:16,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:55:16,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:55:16,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:55:16,850 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:55:16,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:55:16,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:55:16,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:55:16,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:55:16,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:55:16,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:55:16,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:55:16,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:55:16,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:55:16,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:55:16,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:55:16,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:55:16,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:55:16,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:55:16,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:55:16,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:55:16,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:55:16,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:55:16,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:55:16,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:55:16,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:55:16,856 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:55:16,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:55:16,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:55:16,857 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_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b [2022-11-02 19:55:17,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:55:17,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:55:17,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:55:17,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:55:17,211 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:55:17,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/heap-data/hash_fun.i [2022-11-02 19:55:17,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/data/eecc124d5/305bd35d771b4da09523798a7cfaad11/FLAG30fddab2b [2022-11-02 19:55:17,804 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:55:17,804 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/sv-benchmarks/c/heap-data/hash_fun.i [2022-11-02 19:55:17,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/data/eecc124d5/305bd35d771b4da09523798a7cfaad11/FLAG30fddab2b [2022-11-02 19:55:18,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/data/eecc124d5/305bd35d771b4da09523798a7cfaad11 [2022-11-02 19:55:18,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:55:18,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:55:18,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:55:18,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:55:18,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:55:18,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2a5141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18, skipping insertion in model container [2022-11-02 19:55:18,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:55:18,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:55:18,542 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_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2022-11-02 19:55:18,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:55:18,556 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:55:18,635 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_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2022-11-02 19:55:18,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:55:18,665 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:55:18,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18 WrapperNode [2022-11-02 19:55:18,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:55:18,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:55:18,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:55:18,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:55:18,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,715 INFO L138 Inliner]: procedures = 125, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-11-02 19:55:18,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:55:18,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:55:18,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:55:18,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:55:18,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:55:18,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:55:18,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:55:18,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:55:18,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (1/1) ... [2022-11-02 19:55:18,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:55:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:18,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:55:18,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:55:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 19:55:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 19:55:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:55:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 19:55:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:55:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:55:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:55:19,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:55:19,046 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:55:19,277 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:55:19,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:55:19,297 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 19:55:19,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:55:19 BoogieIcfgContainer [2022-11-02 19:55:19,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:55:19,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:55:19,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:55:19,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:55:19,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:55:18" (1/3) ... [2022-11-02 19:55:19,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60522d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:55:19, skipping insertion in model container [2022-11-02 19:55:19,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:18" (2/3) ... [2022-11-02 19:55:19,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60522d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:55:19, skipping insertion in model container [2022-11-02 19:55:19,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:55:19" (3/3) ... [2022-11-02 19:55:19,309 INFO L112 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2022-11-02 19:55:19,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:55:19,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:55:19,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:55:19,398 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;@3a2ad54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:55:19,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:55:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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 19:55:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:55:19,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:19,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:19,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 859985196, now seen corresponding path program 1 times [2022-11-02 19:55:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:19,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545865224] [2022-11-02 19:55:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:19,581 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 19:55:19,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:19,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545865224] [2022-11-02 19:55:19,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545865224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:19,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:19,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:55:19,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65021891] [2022-11-02 19:55:19,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:55:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:55:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:55:19,640 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 19:55:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:19,654 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-11-02 19:55:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:55:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-02 19:55:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:19,665 INFO L225 Difference]: With dead ends: 30 [2022-11-02 19:55:19,665 INFO L226 Difference]: Without dead ends: 15 [2022-11-02 19:55:19,668 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 19:55:19,671 INFO L413 NwaCegarLoop]: 23 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, 23 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 19:55:19,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:55:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-02 19:55:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-02 19:55:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 19:55:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-02 19:55:19,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2022-11-02 19:55:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:19,705 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-02 19:55:19,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 19:55:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-02 19:55:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:55:19,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:19,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:19,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:55:19,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1231547617, now seen corresponding path program 1 times [2022-11-02 19:55:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578421179] [2022-11-02 19:55:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:19,941 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 19:55:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578421179] [2022-11-02 19:55:19,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578421179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:19,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:19,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:55:19,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080372591] [2022-11-02 19:55:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:55:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:55:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:55:19,950 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:55:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:20,021 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-11-02 19:55:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:55:20,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 19:55:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:20,023 INFO L225 Difference]: With dead ends: 29 [2022-11-02 19:55:20,023 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 19:55:20,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:20,025 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 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 19:55:20,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:55:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 19:55:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 19:55:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 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 19:55:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-02 19:55:20,031 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 9 [2022-11-02 19:55:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:20,031 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-02 19:55:20,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:55:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-11-02 19:55:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 19:55:20,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:20,032 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:20,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:55:20,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:20,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2121530184, now seen corresponding path program 1 times [2022-11-02 19:55:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:20,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247977711] [2022-11-02 19:55:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:20,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247977711] [2022-11-02 19:55:20,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247977711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:20,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556665545] [2022-11-02 19:55:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:20,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:21,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:21,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:55:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:21,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 19:55:21,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:21,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-02 19:55:21,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:21,412 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 19:55:21,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:21,443 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:55:21,444 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 20 treesize of output 30 [2022-11-02 19:55:21,463 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 7 treesize of output 5 [2022-11-02 19:55:21,477 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-02 19:55:21,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-02 19:55:21,612 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 37 treesize of output 25 [2022-11-02 19:55:21,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-02 19:55:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:21,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:21,705 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:21,706 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-02 19:55:21,736 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 20 treesize of output 16 [2022-11-02 19:55:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:21,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556665545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:21,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:55:21,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-02 19:55:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969595258] [2022-11-02 19:55:21,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:21,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:55:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:55:21,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:55:21,776 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 19:55:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:21,902 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-11-02 19:55:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:55:21,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 19:55:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:21,906 INFO L225 Difference]: With dead ends: 30 [2022-11-02 19:55:21,906 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 19:55:21,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:55:21,917 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:21,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 36 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:55:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 19:55:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-11-02 19:55:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-02 19:55:21,923 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 15 [2022-11-02 19:55:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:21,923 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-02 19:55:21,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 19:55:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-02 19:55:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 19:55:21,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:21,924 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:21,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:22,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:22,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2121528262, now seen corresponding path program 1 times [2022-11-02 19:55:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:22,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003183495] [2022-11-02 19:55:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:22,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003183495] [2022-11-02 19:55:22,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003183495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096278423] [2022-11-02 19:55:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:22,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:22,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:55:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:22,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 19:55:22,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:22,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-02 19:55:22,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:22,720 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 19:55:22,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:22,743 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:55:22,744 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 20 treesize of output 30 [2022-11-02 19:55:22,752 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 7 treesize of output 5 [2022-11-02 19:55:22,767 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-02 19:55:22,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-02 19:55:22,849 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 37 treesize of output 25 [2022-11-02 19:55:22,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-02 19:55:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:22,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:22,954 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:22,955 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-02 19:55:22,960 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 20 treesize of output 16 [2022-11-02 19:55:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:22,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096278423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:22,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:55:22,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-02 19:55:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038129295] [2022-11-02 19:55:22,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:22,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:55:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:55:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:55:22,985 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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 19:55:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:23,112 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-11-02 19:55:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:55:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 19:55:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:23,114 INFO L225 Difference]: With dead ends: 32 [2022-11-02 19:55:23,114 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 19:55:23,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:55:23,115 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:23,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:55:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 19:55:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-02 19:55:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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 19:55:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-02 19:55:23,122 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2022-11-02 19:55:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:23,123 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-02 19:55:23,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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 19:55:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-11-02 19:55:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 19:55:23,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:23,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:23,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:23,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:23,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2123144338, now seen corresponding path program 1 times [2022-11-02 19:55:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:23,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878035360] [2022-11-02 19:55:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:23,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878035360] [2022-11-02 19:55:23,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878035360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021568359] [2022-11-02 19:55:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:23,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:23,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:24,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:55:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:24,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 19:55:24,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:24,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-02 19:55:24,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:24,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2022-11-02 19:55:24,231 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-02 19:55:24,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-02 19:55:24,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 33 [2022-11-02 19:55:24,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:24,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:55:24,379 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 19:55:24,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 66 [2022-11-02 19:55:24,391 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:55:24,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-11-02 19:55:24,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-02 19:55:24,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-02 19:55:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:24,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:24,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021568359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:24,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:55:24,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-02 19:55:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480345014] [2022-11-02 19:55:24,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:24,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:55:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:55:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:55:24,749 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:24,821 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-11-02 19:55:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:55:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 19:55:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:24,824 INFO L225 Difference]: With dead ends: 44 [2022-11-02 19:55:24,824 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 19:55:24,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:55:24,826 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:24,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2022-11-02 19:55:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 19:55:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-02 19:55:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-02 19:55:24,842 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 20 [2022-11-02 19:55:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:24,842 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-02 19:55:24,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-02 19:55:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 19:55:24,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:24,844 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:24,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:25,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:25,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:25,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash -153301193, now seen corresponding path program 2 times [2022-11-02 19:55:25,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:25,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505648928] [2022-11-02 19:55:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505648928] [2022-11-02 19:55:26,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505648928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167838401] [2022-11-02 19:55:26,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:55:26,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:26,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:26,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:26,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:55:26,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:55:26,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:55:26,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-02 19:55:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:26,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:26,462 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 19:55:26,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:26,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-11-02 19:55:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,486 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 20 treesize of output 22 [2022-11-02 19:55:26,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-11-02 19:55:26,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 41 [2022-11-02 19:55:26,686 INFO L356 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-11-02 19:55:26,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 19:55:26,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 33 [2022-11-02 19:55:26,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:55:26,927 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 19:55:26,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 82 [2022-11-02 19:55:26,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,946 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:55:26,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-11-02 19:55:26,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:26,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 19:55:27,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:27,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2022-11-02 19:55:27,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:55:27,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-02 19:55:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:27,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:27,185 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_299 (Array Int Int))) (<= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse1 (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_299) (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)) (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1))) (+ |c_ULTIMATE.start_main_~base~0#1| 99))) is different from false [2022-11-02 19:55:27,688 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:27,688 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 159 [2022-11-02 19:55:27,732 INFO L356 Elim1Store]: treesize reduction 69, result has 51.7 percent of original size [2022-11-02 19:55:27,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14418 treesize of output 13148 [2022-11-02 19:55:28,071 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 2637 treesize of output 2573 [2022-11-02 19:55:28,119 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 2573 treesize of output 2541 [2022-11-02 19:55:28,168 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 1283 treesize of output 1267 [2022-11-02 19:55:28,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 19:55:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-02 19:55:55,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167838401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:55,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:55:55,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2022-11-02 19:55:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699362736] [2022-11-02 19:55:55,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:55,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 19:55:55,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 19:55:55,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=142, Unknown=3, NotChecked=24, Total=210 [2022-11-02 19:55:55,241 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 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 19:55:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:57,848 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-11-02 19:55:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:55:57,848 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 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 26 [2022-11-02 19:55:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:57,849 INFO L225 Difference]: With dead ends: 47 [2022-11-02 19:55:57,849 INFO L226 Difference]: Without dead ends: 45 [2022-11-02 19:55:57,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=4, NotChecked=40, Total=506 [2022-11-02 19:55:57,851 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:57,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 103 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2022-11-02 19:55:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-02 19:55:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-11-02 19:55:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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 19:55:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-02 19:55:57,857 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 26 [2022-11-02 19:55:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:57,858 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-02 19:55:57,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 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 19:55:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-02 19:55:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 19:55:57,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:57,859 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:57,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 19:55:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:58,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash -153299271, now seen corresponding path program 1 times [2022-11-02 19:55:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607055198] [2022-11-02 19:55:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:58,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:59,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:59,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607055198] [2022-11-02 19:55:59,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607055198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:59,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640315150] [2022-11-02 19:55:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:59,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:59,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:59,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:55:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:59,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-02 19:55:59,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:59,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:59,314 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 19:55:59,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:55:59,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-11-02 19:55:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,340 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 20 treesize of output 22 [2022-11-02 19:55:59,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2022-11-02 19:55:59,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 41 [2022-11-02 19:55:59,526 INFO L356 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-11-02 19:55:59,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 19:55:59,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 35 [2022-11-02 19:55:59,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:55:59,747 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 19:55:59,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 82 [2022-11-02 19:55:59,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,773 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:55:59,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-11-02 19:55:59,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 19:55:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:55:59,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2022-11-02 19:55:59,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:55:59,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-02 19:55:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:59,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:59,928 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array Int Int))) (< |c_ULTIMATE.start_main_~base~0#1| (+ (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse1 (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_421) (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)) (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1))) 1))) is different from false [2022-11-02 19:56:00,190 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:56:00,191 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 159 [2022-11-02 19:56:00,231 INFO L356 Elim1Store]: treesize reduction 69, result has 51.7 percent of original size [2022-11-02 19:56:00,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3498 treesize of output 3236 [2022-11-02 19:56:00,293 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 633 treesize of output 625 [2022-11-02 19:56:00,306 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 625 treesize of output 621 [2022-11-02 19:56:00,318 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 621 treesize of output 605 [2022-11-02 19:56:00,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 19:56:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-02 19:56:00,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640315150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:00,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:56:00,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-02 19:56:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210491588] [2022-11-02 19:56:00,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 19:56:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 19:56:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=142, Unknown=1, NotChecked=24, Total=210 [2022-11-02 19:56:00,631 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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 19:56:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:03,020 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-02 19:56:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:56:03,021 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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 26 [2022-11-02 19:56:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:03,023 INFO L225 Difference]: With dead ends: 42 [2022-11-02 19:56:03,024 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 19:56:03,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=98, Invalid=245, Unknown=3, NotChecked=34, Total=380 [2022-11-02 19:56:03,025 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:03,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 87 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 63 Unchecked, 0.1s Time] [2022-11-02 19:56:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 19:56:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-02 19:56:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-11-02 19:56:03,033 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 26 [2022-11-02 19:56:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:03,034 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-11-02 19:56:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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 19:56:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-11-02 19:56:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 19:56:03,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:03,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 19:56:03,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:03,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:03,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:03,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1774735439, now seen corresponding path program 3 times [2022-11-02 19:56:03,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:03,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040193037] [2022-11-02 19:56:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:03,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040193037] [2022-11-02 19:56:04,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040193037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:56:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106059681] [2022-11-02 19:56:04,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:56:04,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:04,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:04,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:04,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:56:04,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 19:56:04,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:56:04,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-02 19:56:04,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:04,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:04,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-11-02 19:56:04,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-11-02 19:56:04,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:04,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 35 [2022-11-02 19:56:05,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2022-11-02 19:56:05,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,037 INFO L356 Elim1Store]: treesize reduction 178, result has 6.8 percent of original size [2022-11-02 19:56:05,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 64 [2022-11-02 19:56:05,061 INFO L356 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-11-02 19:56:05,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 19:56:05,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:56:05,271 INFO L356 Elim1Store]: treesize reduction 70, result has 9.1 percent of original size [2022-11-02 19:56:05,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 139 treesize of output 101 [2022-11-02 19:56:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,285 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:56:05,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 75 [2022-11-02 19:56:05,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:56:05,500 INFO L356 Elim1Store]: treesize reduction 160, result has 14.4 percent of original size [2022-11-02 19:56:05,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 113 treesize of output 96 [2022-11-02 19:56:05,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,514 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:56:05,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 83 [2022-11-02 19:56:05,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,596 INFO L356 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-02 19:56:05,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 52 [2022-11-02 19:56:05,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:05,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2022-11-02 19:56:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:05,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:08,327 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:56:08,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1655 treesize of output 1660 [2022-11-02 19:56:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:38,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106059681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:38,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:56:38,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-11-02 19:56:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304288103] [2022-11-02 19:56:38,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:38,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 19:56:38,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 19:56:38,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=217, Unknown=9, NotChecked=0, Total=272 [2022-11-02 19:56:38,377 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:43,147 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-02 19:56:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:56:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 19:56:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:43,148 INFO L225 Difference]: With dead ends: 60 [2022-11-02 19:56:43,150 INFO L226 Difference]: Without dead ends: 41 [2022-11-02 19:56:43,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=74, Invalid=377, Unknown=11, NotChecked=0, Total=462 [2022-11-02 19:56:43,151 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:43,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 166 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-02 19:56:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-02 19:56:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-02 19:56:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 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 19:56:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-02 19:56:43,166 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 31 [2022-11-02 19:56:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:43,168 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-02 19:56:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-02 19:56:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 19:56:43,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:43,170 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 19:56:43,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:43,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:43,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash -212280090, now seen corresponding path program 4 times [2022-11-02 19:56:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:43,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511994377] [2022-11-02 19:56:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:45,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:45,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511994377] [2022-11-02 19:56:45,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511994377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:56:45,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628383329] [2022-11-02 19:56:45,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 19:56:45,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:45,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:45,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:45,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_839cb83e-e83b-4bbf-9ef1-aeba1388ba44/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 19:56:45,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 19:56:45,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:56:45,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-02 19:56:45,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:45,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-02 19:56:45,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:56:45,631 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-02 19:56:45,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:56:45,653 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 19:56:45,653 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 20 treesize of output 30 [2022-11-02 19:56:45,660 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 7 treesize of output 5 [2022-11-02 19:56:45,688 INFO L356 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-11-02 19:56:45,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2022-11-02 19:56:45,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:45,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2022-11-02 19:56:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:45,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:45,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-11-02 19:56:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:45,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 40 [2022-11-02 19:56:45,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:45,926 INFO L356 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2022-11-02 19:56:45,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 53 [2022-11-02 19:56:46,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-02 19:56:46,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,259 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 19:56:46,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 71 [2022-11-02 19:56:46,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 51 [2022-11-02 19:56:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,325 INFO L356 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2022-11-02 19:56:46,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 33 [2022-11-02 19:56:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:56:46,662 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-02 19:56:46,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 107 [2022-11-02 19:56:46,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,687 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:56:46,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 60 [2022-11-02 19:56:46,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 19:56:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:46,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:56:46,992 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-02 19:56:46,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 139 treesize of output 98 [2022-11-02 19:56:47,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:47,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:47,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:47,010 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:56:47,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 68 [2022-11-02 19:56:47,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-02 19:56:47,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:56:47,238 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 19:56:47,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 66 [2022-11-02 19:56:47,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:56:47,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-02 19:56:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:47,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:47,317 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_751 (Array Int Int))) (<= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse1 (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_751) (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)) (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1))) (+ |c_ULTIMATE.start_main_~base~0#1| 99))) is different from false [2022-11-02 19:56:47,346 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_751 (Array Int Int))) (<= (let ((.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|)) (.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|))) (let ((.cse5 (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse6 (+ (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.offset|) 4))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| .cse5) .cse6))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| .cse5) .cse6)) (.cse2 (+ 4 .cse4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_751) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse1)) .cse1) .cse2)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse4)) .cse1) .cse2)))))) (+ |c_ULTIMATE.start_main_~base~0#1| 99))) is different from false [2022-11-02 19:57:07,598 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_733 (Array Int Int)) (v_ArrVal_721 (Array Int Int)) (v_ArrVal_725 (Array Int Int)) (v_ArrVal_718 Int) (v_ArrVal_728 Int) (v_ArrVal_738 Int) (v_ArrVal_737 Int) (v_ArrVal_751 (Array Int Int))) (or (< (let ((.cse4 (let ((.cse9 (let ((.cse10 (store |c_#memory_$Pointer$.offset| v_ArrVal_718 (store (store (select |c_#memory_$Pointer$.offset| v_ArrVal_718) 4 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) 0 v_ArrVal_728)))) (store .cse10 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| 0))))) (store .cse9 v_ArrVal_737 (store (store (select .cse9 v_ArrVal_737) 4 0) 0 v_ArrVal_742))))) (let ((.cse0 (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| v_ArrVal_718 (store (store (select |c_#memory_$Pointer$.base| v_ArrVal_718) 4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) 0 v_ArrVal_731)))) (store .cse8 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| v_ArrVal_718))))) (store .cse7 v_ArrVal_737 (store (store (select .cse7 v_ArrVal_737) 4 v_ArrVal_718) 0 v_ArrVal_738)))) (.cse5 (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#list~0#1.offset| 0)) v_ArrVal_737) 4)) (.cse1 (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|))) (let ((.cse2 (select (select (store .cse0 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#list~0#1.offset| v_ArrVal_737)) v_ArrVal_737) 4)) (.cse3 (+ .cse6 4))) (select (select (store (store (store (store |c_#memory_int| v_ArrVal_718 v_ArrVal_721) |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_725) v_ArrVal_737 v_ArrVal_733) |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_751) (select (select (store .cse0 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse2)) .cse2) .cse3)) (select (select (store .cse4 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse6)) .cse2) .cse3)))))) (+ |c_ULTIMATE.start_main_~base~0#1| 100)) (not (< v_ArrVal_718 |c_#StackHeapBarrier|)) (not (= (select |c_#valid| v_ArrVal_718) 0)) (not (< v_ArrVal_737 |c_#StackHeapBarrier|)) (not (= (select (store |c_#valid| v_ArrVal_718 1) v_ArrVal_737) 0)))) is different from false [2022-11-02 19:57:08,042 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:57:08,043 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 2292 treesize of output 2293 [2022-11-02 19:57:08,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:57:08,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:57:08,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24808830 treesize of output 24656766 [2022-11-02 19:57:09,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:57:09,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:57:09,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:57:11,624 INFO L356 Elim1Store]: treesize reduction 20468, result has 0.4 percent of original size [2022-11-02 19:57:11,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 2419366718 treesize of output 2334908438