./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa --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 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:43:08,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:43:08,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:43:08,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:43:08,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:43:08,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:43:08,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:43:08,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:43:08,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:43:08,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:43:08,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:43:08,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:43:08,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:43:08,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:43:08,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:43:08,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:43:08,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:43:08,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:43:08,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:43:08,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:43:08,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:43:08,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:43:08,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:43:08,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:43:08,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:43:08,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:43:08,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:43:08,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:43:08,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:43:08,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:43:08,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:43:08,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:43:08,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:43:08,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:43:08,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:43:08,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:43:08,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:43:08,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:43:08,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:43:08,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:43:08,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:43:08,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:43:08,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:43:08,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:43:08,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:43:08,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:43:08,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:43:08,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:43:08,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:43:08,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:43:08,126 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:43:08,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:43:08,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:43:08,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:43:08,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:43:08,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:43:08,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:43:08,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:43:08,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:43:08,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:43:08,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:43:08,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:43:08,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:43:08,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:43:08,129 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_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2021-12-07 01:43:08,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:43:08,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:43:08,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:43:08,325 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:43:08,325 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:43:08,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/list-1.i [2021-12-07 01:43:08,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/data/18665a6d6/c918c096daa44bf8aaac0dc4843eb924/FLAG8e5609042 [2021-12-07 01:43:08,749 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:43:08,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/sv-benchmarks/c/list-properties/list-1.i [2021-12-07 01:43:08,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/data/18665a6d6/c918c096daa44bf8aaac0dc4843eb924/FLAG8e5609042 [2021-12-07 01:43:09,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/data/18665a6d6/c918c096daa44bf8aaac0dc4843eb924 [2021-12-07 01:43:09,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:43:09,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:43:09,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:43:09,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:43:09,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:43:09,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1304f595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09, skipping insertion in model container [2021-12-07 01:43:09,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:43:09,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:43:09,376 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_51030a22-89b2-4db3-ad0d-73c41d38a28d/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-12-07 01:43:09,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:43:09,386 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:43:09,416 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_51030a22-89b2-4db3-ad0d-73c41d38a28d/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2021-12-07 01:43:09,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:43:09,438 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:43:09,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09 WrapperNode [2021-12-07 01:43:09,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:43:09,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:43:09,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:43:09,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:43:09,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,473 INFO L137 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-12-07 01:43:09,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:43:09,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:43:09,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:43:09,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:43:09,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:43:09,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:43:09,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:43:09,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:43:09,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (1/1) ... [2021-12-07 01:43:09,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:43:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:09,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:43:09,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:43:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-07 01:43:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:43:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:43:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:43:09,628 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:43:09,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:43:09,647 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-07 01:43:09,728 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:43:09,733 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:43:09,733 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 01:43:09,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:43:09 BoogieIcfgContainer [2021-12-07 01:43:09,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:43:09,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:43:09,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:43:09,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:43:09,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:43:09" (1/3) ... [2021-12-07 01:43:09,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f033696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:43:09, skipping insertion in model container [2021-12-07 01:43:09,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:43:09" (2/3) ... [2021-12-07 01:43:09,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f033696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:43:09, skipping insertion in model container [2021-12-07 01:43:09,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:43:09" (3/3) ... [2021-12-07 01:43:09,740 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2021-12-07 01:43:09,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:43:09,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:43:09,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:43:09,782 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:43:09,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:43:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 25 states have (on average 1.52) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:43:09,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:09,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:09,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash 896526153, now seen corresponding path program 1 times [2021-12-07 01:43:09,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:09,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137013829] [2021-12-07 01:43:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:09,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:09,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:09,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137013829] [2021-12-07 01:43:09,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137013829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:43:09,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:43:09,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:43:09,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821116986] [2021-12-07 01:43:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:43:09,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:43:09,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:43:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:43:09,942 INFO L87 Difference]: Start difference. First operand has 30 states, 25 states have (on average 1.52) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-12-07 01:43:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:09,954 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2021-12-07 01:43:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:43:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-12-07 01:43:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:09,961 INFO L225 Difference]: With dead ends: 50 [2021-12-07 01:43:09,961 INFO L226 Difference]: Without dead ends: 21 [2021-12-07 01:43:09,963 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:43:09,965 INFO L933 BasicCegarLoop]: 36 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, 36 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 [2021-12-07 01:43:09,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:43:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-07 01:43:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-07 01:43:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-07 01:43:09,989 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2021-12-07 01:43:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:09,990 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-07 01:43:09,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-12-07 01:43:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-07 01:43:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:43:09,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:09,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:09,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:43:09,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash 283143297, now seen corresponding path program 1 times [2021-12-07 01:43:09,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:09,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904402469] [2021-12-07 01:43:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:09,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:10,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:10,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904402469] [2021-12-07 01:43:10,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904402469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:43:10,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:43:10,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:43:10,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426020143] [2021-12-07 01:43:10,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:43:10,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:43:10,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:43:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:43:10,076 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:10,154 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-12-07 01:43:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:43:10,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 01:43:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:10,156 INFO L225 Difference]: With dead ends: 46 [2021-12-07 01:43:10,157 INFO L226 Difference]: Without dead ends: 42 [2021-12-07 01:43:10,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:43:10,159 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:10,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:43:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-07 01:43:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-12-07 01:43:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-12-07 01:43:10,167 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 16 [2021-12-07 01:43:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:10,168 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-07 01:43:10,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-12-07 01:43:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:43:10,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:10,169 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:10,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:43:10,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1566445212, now seen corresponding path program 1 times [2021-12-07 01:43:10,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:10,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124808416] [2021-12-07 01:43:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:10,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:10,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:10,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124808416] [2021-12-07 01:43:10,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124808416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:43:10,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:43:10,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:43:10,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516517699] [2021-12-07 01:43:10,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:43:10,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:43:10,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:43:10,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:43:10,239 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 01:43:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:10,299 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-12-07 01:43:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:43:10,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-12-07 01:43:10,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:10,300 INFO L225 Difference]: With dead ends: 48 [2021-12-07 01:43:10,300 INFO L226 Difference]: Without dead ends: 40 [2021-12-07 01:43:10,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:43:10,302 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:10,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 60 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:43:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-07 01:43:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2021-12-07 01:43:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2021-12-07 01:43:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-07 01:43:10,308 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-12-07 01:43:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:10,309 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-07 01:43:10,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 01:43:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-07 01:43:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:43:10,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:10,310 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:10,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:43:10,310 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1703819108, now seen corresponding path program 1 times [2021-12-07 01:43:10,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:10,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715151157] [2021-12-07 01:43:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:10,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:10,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:10,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715151157] [2021-12-07 01:43:10,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715151157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:43:10,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:43:10,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:43:10,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929008778] [2021-12-07 01:43:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:43:10,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:43:10,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:43:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:43:10,358 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 01:43:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:10,409 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-12-07 01:43:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:43:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-12-07 01:43:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:10,411 INFO L225 Difference]: With dead ends: 48 [2021-12-07 01:43:10,411 INFO L226 Difference]: Without dead ends: 37 [2021-12-07 01:43:10,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:43:10,413 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:10,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:43:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-07 01:43:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2021-12-07 01:43:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-12-07 01:43:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-12-07 01:43:10,418 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2021-12-07 01:43:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:10,418 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-12-07 01:43:10,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 01:43:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-12-07 01:43:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 01:43:10,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:10,419 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:10,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:43:10,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1538293272, now seen corresponding path program 1 times [2021-12-07 01:43:10,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:10,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235940123] [2021-12-07 01:43:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:10,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:10,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235940123] [2021-12-07 01:43:10,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235940123] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:10,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289879645] [2021-12-07 01:43:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:10,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:10,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:43:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:10,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-07 01:43:10,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:10,622 INFO L388 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 [2021-12-07 01:43:10,717 INFO L388 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 [2021-12-07 01:43:10,732 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:10,733 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:10,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:10,786 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:10,835 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:10,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:10,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:10,889 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_84 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_84) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2021-12-07 01:43:10,904 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_84 (Array Int Int)) (v_ArrVal_82 Int)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_82)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_84) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-07 01:43:10,926 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:10,927 INFO L388 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 2 case distinctions, treesize of input 23 treesize of output 29 [2021-12-07 01:43:10,935 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:10,935 INFO L388 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 30 treesize of output 33 [2021-12-07 01:43:10,940 INFO L388 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 9 treesize of output 7 [2021-12-07 01:43:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-07 01:43:11,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289879645] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:11,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:11,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2021-12-07 01:43:11,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293014201] [2021-12-07 01:43:11,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:11,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:43:11,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:43:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=167, Unknown=2, NotChecked=54, Total=272 [2021-12-07 01:43:11,076 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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) [2021-12-07 01:43:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:11,168 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-12-07 01:43:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:43:11,168 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 [2021-12-07 01:43:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:11,169 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:43:11,169 INFO L226 Difference]: Without dead ends: 41 [2021-12-07 01:43:11,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=268, Unknown=2, NotChecked=70, Total=420 [2021-12-07 01:43:11,171 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:11,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 99 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 74 Unchecked, 0.0s Time] [2021-12-07 01:43:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-07 01:43:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-12-07 01:43:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-12-07 01:43:11,176 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 20 [2021-12-07 01:43:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:11,177 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-12-07 01:43:11,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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) [2021-12-07 01:43:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-12-07 01:43:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 01:43:11,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:11,178 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:11,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:43:11,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:11,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -674891608, now seen corresponding path program 1 times [2021-12-07 01:43:11,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:11,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892194432] [2021-12-07 01:43:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:11,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:11,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:11,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892194432] [2021-12-07 01:43:11,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892194432] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:11,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614810715] [2021-12-07 01:43:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:11,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:11,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:11,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:11,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:43:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:11,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-07 01:43:11,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:11,580 INFO L388 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 [2021-12-07 01:43:11,620 INFO L388 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 [2021-12-07 01:43:11,626 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:11,626 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:11,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:11,660 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:11,700 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:11,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:11,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:11,730 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_136 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_136) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-07 01:43:11,746 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_135 Int) (v_ArrVal_136 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_135)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_136) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-07 01:43:11,763 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:11,763 INFO L388 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 2 case distinctions, treesize of input 23 treesize of output 29 [2021-12-07 01:43:11,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:11,770 INFO L388 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 30 treesize of output 33 [2021-12-07 01:43:11,773 INFO L388 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 9 treesize of output 7 [2021-12-07 01:43:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-07 01:43:11,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614810715] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:11,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:11,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2021-12-07 01:43:11,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793759977] [2021-12-07 01:43:11,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:11,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:43:11,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:43:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=167, Unknown=2, NotChecked=54, Total=272 [2021-12-07 01:43:11,855 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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) [2021-12-07 01:43:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:11,984 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-12-07 01:43:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:43:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 [2021-12-07 01:43:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:11,986 INFO L225 Difference]: With dead ends: 70 [2021-12-07 01:43:11,986 INFO L226 Difference]: Without dead ends: 64 [2021-12-07 01:43:11,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=257, Unknown=2, NotChecked=70, Total=420 [2021-12-07 01:43:11,987 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:11,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 157 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 117 Invalid, 0 Unknown, 115 Unchecked, 0.1s Time] [2021-12-07 01:43:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-07 01:43:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-12-07 01:43:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 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) [2021-12-07 01:43:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2021-12-07 01:43:11,992 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 20 [2021-12-07 01:43:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:11,992 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2021-12-07 01:43:11,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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) [2021-12-07 01:43:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2021-12-07 01:43:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 01:43:11,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:11,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:12,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:43:12,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 01:43:12,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:12,197 INFO L85 PathProgramCache]: Analyzing trace with hash -782408125, now seen corresponding path program 1 times [2021-12-07 01:43:12,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:12,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680338526] [2021-12-07 01:43:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:12,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:12,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680338526] [2021-12-07 01:43:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680338526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:12,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793504559] [2021-12-07 01:43:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:12,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:12,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:12,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:43:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:12,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-07 01:43:12,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:12,437 INFO L388 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 [2021-12-07 01:43:12,475 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:12,475 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:12,496 INFO L388 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 13 treesize of output 9 [2021-12-07 01:43:12,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 01:43:12,534 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:12,534 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2021-12-07 01:43:12,537 INFO L388 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 42 treesize of output 44 [2021-12-07 01:43:12,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-12-07 01:43:12,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-12-07 01:43:12,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-12-07 01:43:12,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:12,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:12,605 INFO L388 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 79 treesize of output 57 [2021-12-07 01:43:12,610 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_186 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_189) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.offset|))) is different from false [2021-12-07 01:43:12,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:12,630 INFO L388 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 22 treesize of output 23 [2021-12-07 01:43:12,635 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:12,636 INFO L388 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 36 treesize of output 39 [2021-12-07 01:43:12,638 INFO L388 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 11 treesize of output 7 [2021-12-07 01:43:12,655 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-07 01:43:12,655 INFO L388 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 22 treesize of output 1 [2021-12-07 01:43:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-07 01:43:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793504559] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:12,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:12,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-07 01:43:12,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543753896] [2021-12-07 01:43:12,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:12,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 01:43:12,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 01:43:12,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2021-12-07 01:43:12,728 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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) [2021-12-07 01:43:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:12,892 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-12-07 01:43:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:43:12,893 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-07 01:43:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:12,893 INFO L225 Difference]: With dead ends: 63 [2021-12-07 01:43:12,893 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 01:43:12,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=368, Unknown=1, NotChecked=40, Total=506 [2021-12-07 01:43:12,894 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 104 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:12,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 143 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 191 Invalid, 0 Unknown, 62 Unchecked, 0.1s Time] [2021-12-07 01:43:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 01:43:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2021-12-07 01:43:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 states have internal predecessors, (56), 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) [2021-12-07 01:43:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-12-07 01:43:12,899 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 22 [2021-12-07 01:43:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:12,899 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-12-07 01:43:12,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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) [2021-12-07 01:43:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-12-07 01:43:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:43:12,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:12,900 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:12,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:43:13,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:13,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash -226254882, now seen corresponding path program 2 times [2021-12-07 01:43:13,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:13,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785457558] [2021-12-07 01:43:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:13,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:13,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785457558] [2021-12-07 01:43:13,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785457558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564344353] [2021-12-07 01:43:13,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:43:13,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:13,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:13,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:43:13,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:43:13,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:13,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-07 01:43:13,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:13,314 INFO L388 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 [2021-12-07 01:43:13,358 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:13,358 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:13,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 01:43:13,386 INFO L388 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 13 treesize of output 9 [2021-12-07 01:43:13,416 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:13,417 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2021-12-07 01:43:13,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-12-07 01:43:13,421 INFO L388 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 32 treesize of output 34 [2021-12-07 01:43:13,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-12-07 01:43:13,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-12-07 01:43:13,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:13,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:13,497 INFO L388 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 52 treesize of output 30 [2021-12-07 01:43:13,501 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_242 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_242) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_ArrVal_240 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_240) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-12-07 01:43:13,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:13,516 INFO L388 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 22 treesize of output 23 [2021-12-07 01:43:13,521 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:13,521 INFO L388 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 36 treesize of output 39 [2021-12-07 01:43:13,524 INFO L388 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 11 treesize of output 7 [2021-12-07 01:43:13,539 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-07 01:43:13,539 INFO L388 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 22 treesize of output 1 [2021-12-07 01:43:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-07 01:43:13,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564344353] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:13,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:13,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-07 01:43:13,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453402147] [2021-12-07 01:43:13,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:13,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 01:43:13,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 01:43:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=290, Unknown=1, NotChecked=34, Total=380 [2021-12-07 01:43:13,629 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:13,848 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2021-12-07 01:43:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:43:13,849 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 01:43:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:13,849 INFO L225 Difference]: With dead ends: 65 [2021-12-07 01:43:13,849 INFO L226 Difference]: Without dead ends: 55 [2021-12-07 01:43:13,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=566, Unknown=1, NotChecked=50, Total=756 [2021-12-07 01:43:13,850 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 114 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:13,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 169 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 226 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2021-12-07 01:43:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-07 01:43:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2021-12-07 01:43:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 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) [2021-12-07 01:43:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-12-07 01:43:13,854 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 24 [2021-12-07 01:43:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:13,854 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-12-07 01:43:13,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-12-07 01:43:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:43:13,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:13,855 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:13,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:43:14,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:14,057 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1990497246, now seen corresponding path program 1 times [2021-12-07 01:43:14,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:14,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172040011] [2021-12-07 01:43:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:14,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:43:14,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172040011] [2021-12-07 01:43:14,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172040011] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83790214] [2021-12-07 01:43:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:14,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:14,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:14,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:43:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:14,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-07 01:43:14,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:14,286 INFO L388 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 [2021-12-07 01:43:14,314 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:14,314 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:14,331 INFO L388 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 13 treesize of output 9 [2021-12-07 01:43:14,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 01:43:14,364 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:14,364 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2021-12-07 01:43:14,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-12-07 01:43:14,369 INFO L388 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 32 treesize of output 34 [2021-12-07 01:43:14,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-12-07 01:43:14,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-12-07 01:43:14,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:14,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:14,461 INFO L388 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 52 treesize of output 30 [2021-12-07 01:43:14,473 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_293 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_293) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_ArrVal_295 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_295) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|))) is different from false [2021-12-07 01:43:14,489 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:14,490 INFO L388 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 22 treesize of output 23 [2021-12-07 01:43:14,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:14,495 INFO L388 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 38 treesize of output 35 [2021-12-07 01:43:14,498 INFO L388 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 11 treesize of output 7 [2021-12-07 01:43:14,520 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-07 01:43:14,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2021-12-07 01:43:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-07 01:43:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83790214] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:14,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:14,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2021-12-07 01:43:14,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666612824] [2021-12-07 01:43:14,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:14,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-07 01:43:14,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-07 01:43:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=261, Unknown=1, NotChecked=32, Total=342 [2021-12-07 01:43:14,613 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:14,751 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-12-07 01:43:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:43:14,752 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 01:43:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:14,752 INFO L225 Difference]: With dead ends: 58 [2021-12-07 01:43:14,752 INFO L226 Difference]: Without dead ends: 40 [2021-12-07 01:43:14,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=504, Unknown=1, NotChecked=46, Total=650 [2021-12-07 01:43:14,754 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:14,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 145 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 143 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2021-12-07 01:43:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-07 01:43:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2021-12-07 01:43:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-12-07 01:43:14,758 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 24 [2021-12-07 01:43:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:14,758 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-12-07 01:43:14,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-12-07 01:43:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:43:14,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:14,759 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:14,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:43:14,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:14,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash 366447567, now seen corresponding path program 2 times [2021-12-07 01:43:14,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212020661] [2021-12-07 01:43:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:14,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:15,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212020661] [2021-12-07 01:43:15,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212020661] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194581145] [2021-12-07 01:43:15,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:43:15,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:15,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:15,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:15,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:43:15,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:43:15,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:15,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-07 01:43:15,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:15,118 INFO L388 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 [2021-12-07 01:43:15,145 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:15,145 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:15,149 INFO L388 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 [2021-12-07 01:43:15,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:15,166 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:15,177 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:15,212 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:15,242 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-07 01:43:15,242 INFO L388 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 19 treesize of output 22 [2021-12-07 01:43:15,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:15,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:16,430 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) is different from false [2021-12-07 01:43:16,450 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_61| Int) (v_ArrVal_376 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= 2 .cse0)))) is different from false [2021-12-07 01:43:16,463 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_61| Int) (v_ArrVal_376 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) is different from false [2021-12-07 01:43:16,477 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_61| Int) (v_ArrVal_373 Int) (v_ArrVal_376 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_373)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) is different from false [2021-12-07 01:43:16,497 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:16,497 INFO L388 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 2 case distinctions, treesize of input 95 treesize of output 61 [2021-12-07 01:43:16,509 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:16,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 403 treesize of output 405 [2021-12-07 01:43:16,517 INFO L388 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 403 treesize of output 375 [2021-12-07 01:43:22,038 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:22,073 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:22,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:22,080 INFO L388 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 21 treesize of output 23 [2021-12-07 01:43:22,102 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:22,116 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 67 [2021-12-07 01:43:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-07 01:43:22,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194581145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:22,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-07 01:43:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353677633] [2021-12-07 01:43:22,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:22,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 01:43:22,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 01:43:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=286, Unknown=4, NotChecked=148, Total=506 [2021-12-07 01:43:22,195 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 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) [2021-12-07 01:43:22,253 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_61| Int) (v_ArrVal_376 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1)) is different from false [2021-12-07 01:43:22,257 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_61| Int) (v_ArrVal_376 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3))))) is different from false [2021-12-07 01:43:22,259 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_61| Int) (v_ArrVal_376 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_376))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_61|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= 2 .cse0)))) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0)) is different from false [2021-12-07 01:43:23,624 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0)) is different from false [2021-12-07 01:43:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:23,681 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-12-07 01:43:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:43:23,681 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 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) Word has length 24 [2021-12-07 01:43:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:23,682 INFO L225 Difference]: With dead ends: 79 [2021-12-07 01:43:23,682 INFO L226 Difference]: Without dead ends: 75 [2021-12-07 01:43:23,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=100, Invalid=386, Unknown=8, NotChecked=376, Total=870 [2021-12-07 01:43:23,683 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:23,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 185 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 168 Invalid, 0 Unknown, 201 Unchecked, 0.1s Time] [2021-12-07 01:43:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-07 01:43:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 44. [2021-12-07 01:43:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 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) [2021-12-07 01:43:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-12-07 01:43:23,687 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 24 [2021-12-07 01:43:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:23,687 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-12-07 01:43:23,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 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) [2021-12-07 01:43:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-12-07 01:43:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:43:23,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:23,688 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:23,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:43:23,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:43:23,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:23,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 666149519, now seen corresponding path program 1 times [2021-12-07 01:43:23,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:23,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992526049] [2021-12-07 01:43:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:23,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:24,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992526049] [2021-12-07 01:43:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992526049] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994795306] [2021-12-07 01:43:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:24,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:24,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:24,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:24,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:43:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-07 01:43:24,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:24,074 INFO L388 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 [2021-12-07 01:43:24,092 INFO L388 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 [2021-12-07 01:43:24,098 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:24,098 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:24,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:24,112 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:24,130 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:24,151 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:24,181 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-07 01:43:24,181 INFO L388 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 19 treesize of output 22 [2021-12-07 01:43:24,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:24,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:25,222 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) is different from false [2021-12-07 01:43:25,239 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_70| Int) (v_ArrVal_463 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) is different from false [2021-12-07 01:43:25,250 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_70| Int) (v_ArrVal_463 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 1)))) is different from false [2021-12-07 01:43:25,270 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_70| Int) (v_ArrVal_463 (Array Int Int)) (v_ArrVal_457 Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_457)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= 3 .cse0)))) is different from false [2021-12-07 01:43:25,287 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:25,287 INFO L388 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 2 case distinctions, treesize of input 95 treesize of output 61 [2021-12-07 01:43:25,297 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:25,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 547 treesize of output 537 [2021-12-07 01:43:25,306 INFO L388 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 535 treesize of output 503 [2021-12-07 01:43:25,402 INFO L388 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 275 treesize of output 259 [2021-12-07 01:43:26,387 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:26,394 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:26,394 INFO L388 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 31 treesize of output 33 [2021-12-07 01:43:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-07 01:43:26,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994795306] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:26,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:26,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-07 01:43:26,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940514586] [2021-12-07 01:43:26,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:26,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 01:43:26,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 01:43:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=286, Unknown=4, NotChecked=148, Total=506 [2021-12-07 01:43:26,452 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 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) [2021-12-07 01:43:26,498 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_70| Int) (v_ArrVal_463 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1)) is different from false [2021-12-07 01:43:26,502 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_70| Int) (v_ArrVal_463 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2021-12-07 01:43:26,512 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_70| Int) (v_ArrVal_463 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_463))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_70|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0)) is different from false [2021-12-07 01:43:28,531 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0)) is different from false [2021-12-07 01:43:28,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:28,573 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2021-12-07 01:43:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:43:28,573 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 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) Word has length 24 [2021-12-07 01:43:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:28,574 INFO L225 Difference]: With dead ends: 78 [2021-12-07 01:43:28,574 INFO L226 Difference]: Without dead ends: 74 [2021-12-07 01:43:28,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=94, Invalid=350, Unknown=8, NotChecked=360, Total=812 [2021-12-07 01:43:28,575 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:28,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 157 Invalid, 0 Unknown, 183 Unchecked, 0.1s Time] [2021-12-07 01:43:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-07 01:43:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2021-12-07 01:43:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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) [2021-12-07 01:43:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-12-07 01:43:28,578 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 24 [2021-12-07 01:43:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:28,578 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-12-07 01:43:28,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 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) [2021-12-07 01:43:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-12-07 01:43:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:43:28,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:28,579 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:28,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-07 01:43:28,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:28,781 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1529551183, now seen corresponding path program 2 times [2021-12-07 01:43:28,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:28,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489191518] [2021-12-07 01:43:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:28,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:28,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489191518] [2021-12-07 01:43:28,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489191518] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084063060] [2021-12-07 01:43:28,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:43:28,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:28,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:28,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:28,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:43:28,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:43:28,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:28,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-07 01:43:28,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:28,922 INFO L388 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 [2021-12-07 01:43:28,953 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:28,953 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:28,955 INFO L388 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 [2021-12-07 01:43:28,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:28,977 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:28,991 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:29,011 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:29,039 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-07 01:43:29,039 INFO L388 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 19 treesize of output 22 [2021-12-07 01:43:29,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:29,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:30,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) is different from false [2021-12-07 01:43:30,126 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_547 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 1)))) is different from false [2021-12-07 01:43:30,137 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_547 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) is different from false [2021-12-07 01:43:30,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_544 Int) (v_ArrVal_547 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_544)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 1)))) is different from false [2021-12-07 01:43:30,168 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:30,168 INFO L388 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 2 case distinctions, treesize of input 95 treesize of output 61 [2021-12-07 01:43:30,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:30,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 403 treesize of output 405 [2021-12-07 01:43:30,187 INFO L388 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 403 treesize of output 375 [2021-12-07 01:43:32,701 INFO L388 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 11 treesize of output 7 [2021-12-07 01:43:32,736 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-07 01:43:32,821 INFO L388 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 19 treesize of output 15 [2021-12-07 01:43:32,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:32,857 INFO L388 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 26 treesize of output 28 [2021-12-07 01:43:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-07 01:43:32,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084063060] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:32,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:32,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 29 [2021-12-07 01:43:32,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586817262] [2021-12-07 01:43:32,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:32,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-07 01:43:32,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:32,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-07 01:43:32,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=517, Unknown=4, NotChecked=196, Total=812 [2021-12-07 01:43:32,906 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:32,960 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (forall ((v_ArrVal_547 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~t~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1)) is different from false [2021-12-07 01:43:32,964 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (forall ((v_ArrVal_547 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= .cse0 1)))) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1)) is different from false [2021-12-07 01:43:32,972 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_ArrVal_547 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_79| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_547))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_79|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 3) (= .cse0 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~t~0#1.base|)) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0)) is different from false [2021-12-07 01:43:34,981 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 1) (= .cse0 3)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0)) is different from false [2021-12-07 01:43:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:35,030 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2021-12-07 01:43:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:43:35,031 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 01:43:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:35,031 INFO L225 Difference]: With dead ends: 81 [2021-12-07 01:43:35,031 INFO L226 Difference]: Without dead ends: 75 [2021-12-07 01:43:35,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=130, Invalid=650, Unknown=8, NotChecked=472, Total=1260 [2021-12-07 01:43:35,032 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:35,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 190 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 0 Unknown, 236 Unchecked, 0.1s Time] [2021-12-07 01:43:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-07 01:43:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2021-12-07 01:43:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 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) [2021-12-07 01:43:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-12-07 01:43:35,036 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 24 [2021-12-07 01:43:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:35,037 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-12-07 01:43:35,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-12-07 01:43:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 01:43:35,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:35,038 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:35,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:43:35,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 01:43:35,240 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 17470058, now seen corresponding path program 3 times [2021-12-07 01:43:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:35,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10560049] [2021-12-07 01:43:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:35,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:35,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:35,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10560049] [2021-12-07 01:43:35,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10560049] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:35,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501264674] [2021-12-07 01:43:35,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:43:35,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:35,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:35,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:35,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:43:35,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:43:35,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:35,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-07 01:43:35,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:35,467 INFO L388 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 [2021-12-07 01:43:35,504 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:43:35,504 INFO L388 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 17 treesize of output 21 [2021-12-07 01:43:35,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-07 01:43:35,542 INFO L388 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 13 treesize of output 9 [2021-12-07 01:43:35,572 INFO L388 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 [2021-12-07 01:43:35,578 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-07 01:43:35,579 INFO L388 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 16 treesize of output 22 [2021-12-07 01:43:35,581 INFO L388 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 3 [2021-12-07 01:43:35,591 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:35,591 INFO L388 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 37 treesize of output 35 [2021-12-07 01:43:35,599 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-07 01:43:35,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-12-07 01:43:35,650 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-12-07 01:43:35,650 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 89 [2021-12-07 01:43:35,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:35,654 INFO L388 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 51 treesize of output 44 [2021-12-07 01:43:35,657 INFO L388 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 103 treesize of output 99 [2021-12-07 01:43:35,714 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-07 01:43:35,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 125 [2021-12-07 01:43:35,725 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:35,725 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 115 [2021-12-07 01:43:35,728 INFO L388 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 44 treesize of output 46 [2021-12-07 01:43:35,770 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-12-07 01:43:35,771 INFO L388 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 32 [2021-12-07 01:43:35,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-12-07 01:43:35,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:35,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:35,802 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_638 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_640 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_639) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_640) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) 2)) is different from false [2021-12-07 01:43:35,813 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array Int Int)) (v_ArrVal_638 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_637 Int) (v_ArrVal_640 (Array Int Int))) (= 2 (let ((.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 v_ArrVal_637)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_639) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_633) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_640) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) is different from false [2021-12-07 01:43:35,824 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,824 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2021-12-07 01:43:35,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:43:35,830 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 65 [2021-12-07 01:43:35,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,836 INFO L388 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 118 treesize of output 121 [2021-12-07 01:43:35,840 INFO L388 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 45 treesize of output 27 [2021-12-07 01:43:35,873 INFO L388 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 30 treesize of output 22 [2021-12-07 01:43:35,925 INFO L388 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 30 treesize of output 22 [2021-12-07 01:43:35,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,946 INFO L388 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 93 treesize of output 94 [2021-12-07 01:43:35,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,951 INFO L388 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 94 treesize of output 84 [2021-12-07 01:43:35,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,957 INFO L388 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 141 treesize of output 144 [2021-12-07 01:43:35,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,965 INFO L388 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 448 treesize of output 433 [2021-12-07 01:43:35,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:35,975 INFO L388 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 443 treesize of output 339 [2021-12-07 01:43:35,984 INFO L388 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 282 treesize of output 274 [2021-12-07 01:43:35,989 INFO L388 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 274 treesize of output 270 [2021-12-07 01:43:35,995 INFO L388 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 270 treesize of output 254 [2021-12-07 01:43:36,000 INFO L388 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 254 treesize of output 238 [2021-12-07 01:43:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-07 01:43:36,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501264674] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:36,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:36,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2021-12-07 01:43:36,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497610242] [2021-12-07 01:43:36,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:36,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:43:36,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:43:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=480, Unknown=4, NotChecked=90, Total=650 [2021-12-07 01:43:36,349 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:36,760 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-12-07 01:43:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:43:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 01:43:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:36,761 INFO L225 Difference]: With dead ends: 69 [2021-12-07 01:43:36,761 INFO L226 Difference]: Without dead ends: 65 [2021-12-07 01:43:36,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=892, Unknown=4, NotChecked=126, Total=1190 [2021-12-07 01:43:36,762 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:36,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 243 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 350 Invalid, 0 Unknown, 205 Unchecked, 0.2s Time] [2021-12-07 01:43:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-07 01:43:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-12-07 01:43:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 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) [2021-12-07 01:43:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2021-12-07 01:43:36,765 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 26 [2021-12-07 01:43:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:36,766 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2021-12-07 01:43:36,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2021-12-07 01:43:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 01:43:36,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:36,766 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:36,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:43:36,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:43:36,968 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2093251050, now seen corresponding path program 1 times [2021-12-07 01:43:36,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:36,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201486258] [2021-12-07 01:43:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:36,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:37,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:37,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201486258] [2021-12-07 01:43:37,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201486258] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:37,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397717918] [2021-12-07 01:43:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:37,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:37,154 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:37,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:43:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:37,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-07 01:43:37,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:37,225 INFO L388 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 [2021-12-07 01:43:37,248 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:43:37,248 INFO L388 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 17 treesize of output 21 [2021-12-07 01:43:37,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:43:37,283 INFO L388 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 [2021-12-07 01:43:37,319 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-07 01:43:37,319 INFO L388 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 14 treesize of output 20 [2021-12-07 01:43:37,321 INFO L388 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 5 treesize of output 3 [2021-12-07 01:43:37,330 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:37,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-07 01:43:37,336 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-07 01:43:37,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-07 01:43:37,343 INFO L388 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 [2021-12-07 01:43:37,401 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-12-07 01:43:37,401 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 103 [2021-12-07 01:43:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:37,406 INFO L388 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 41 treesize of output 36 [2021-12-07 01:43:37,409 INFO L388 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 93 [2021-12-07 01:43:37,514 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-07 01:43:37,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 145 [2021-12-07 01:43:37,525 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-07 01:43:37,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 134 [2021-12-07 01:43:37,528 INFO L388 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 69 treesize of output 54 [2021-12-07 01:43:37,600 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-12-07 01:43:37,600 INFO L388 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 60 [2021-12-07 01:43:37,602 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 26 [2021-12-07 01:43:37,637 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:37,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-12-07 01:43:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:37,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:37,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:37,812 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 79 [2021-12-07 01:43:37,828 INFO L354 Elim1Store]: treesize reduction 4, result has 91.7 percent of original size [2021-12-07 01:43:37,829 INFO L388 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 2468 treesize of output 2340 [2021-12-07 01:43:37,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:37,849 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1420 treesize of output 1283 [2021-12-07 01:43:38,643 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:38,693 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:38,734 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:39,084 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:39,147 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:39,513 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:39,557 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:39,595 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:39,968 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:40,040 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:40,127 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:40,323 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:40,608 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:40,903 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:40,963 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:41,106 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:41,161 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:41,292 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:41,312 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:41,540 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:41,562 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:41,997 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:42,048 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:42,094 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:42,482 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:42,539 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:42,608 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:42,792 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:43,062 INFO L388 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 8 treesize of output 4 [2021-12-07 01:43:43,305 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:43,365 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:43,539 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:43,594 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:43,724 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:43,741 INFO L388 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 49 treesize of output 37 [2021-12-07 01:43:43,933 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:43,954 INFO L388 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 56 treesize of output 40 [2021-12-07 01:43:44,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:44,110 INFO L388 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 184 treesize of output 164 [2021-12-07 01:43:44,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:44,119 INFO L388 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 793 treesize of output 574 [2021-12-07 01:43:44,127 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:44,128 INFO L388 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 530 treesize of output 510 [2021-12-07 01:43:44,134 INFO L388 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 500 treesize of output 452 [2021-12-07 01:43:44,145 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:44,145 INFO L388 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 460 treesize of output 444 [2021-12-07 01:43:44,161 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:44,162 INFO L388 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 624 treesize of output 615 [2021-12-07 01:43:44,173 INFO L388 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 596 treesize of output 572 [2021-12-07 01:43:44,185 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:44,185 INFO L388 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 593 treesize of output 449 [2021-12-07 01:43:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:45,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397717918] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:45,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:45,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2021-12-07 01:43:45,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456827757] [2021-12-07 01:43:45,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:45,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 01:43:45,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 01:43:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:43:45,242 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:45,503 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2021-12-07 01:43:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:43:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 01:43:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:45,504 INFO L225 Difference]: With dead ends: 75 [2021-12-07 01:43:45,504 INFO L226 Difference]: Without dead ends: 69 [2021-12-07 01:43:45,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 01:43:45,505 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:45,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 260 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 225 Invalid, 0 Unknown, 140 Unchecked, 0.1s Time] [2021-12-07 01:43:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-07 01:43:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2021-12-07 01:43:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-07 01:43:45,509 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 26 [2021-12-07 01:43:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:45,509 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-07 01:43:45,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-07 01:43:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:43:45,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:45,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:45,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:43:45,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:43:45,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash -342467003, now seen corresponding path program 4 times [2021-12-07 01:43:45,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:45,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791392038] [2021-12-07 01:43:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:45,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:45,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791392038] [2021-12-07 01:43:45,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791392038] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007271434] [2021-12-07 01:43:45,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:43:45,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:45,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:45,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:45,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:43:45,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:43:45,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:45,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-07 01:43:45,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:45,973 INFO L388 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 [2021-12-07 01:43:46,013 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:43:46,013 INFO L388 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 17 treesize of output 21 [2021-12-07 01:43:46,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:43:46,047 INFO L388 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 [2021-12-07 01:43:46,086 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-07 01:43:46,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-07 01:43:46,094 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-07 01:43:46,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-07 01:43:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:46,102 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:46,145 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-12-07 01:43:46,145 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 75 [2021-12-07 01:43:46,147 INFO L388 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 82 [2021-12-07 01:43:46,210 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-07 01:43:46,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 159 treesize of output 132 [2021-12-07 01:43:46,220 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-07 01:43:46,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 121 [2021-12-07 01:43:46,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-12-07 01:43:46,384 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-12-07 01:43:46,384 INFO L388 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 58 [2021-12-07 01:43:46,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-12-07 01:43:46,424 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:46,424 INFO L388 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 22 treesize of output 14 [2021-12-07 01:43:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:46,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:46,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:46,491 INFO L388 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 202 treesize of output 205 [2021-12-07 01:43:46,656 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:46,656 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 103 [2021-12-07 01:43:46,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:46,660 INFO L388 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 96 [2021-12-07 01:43:46,955 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_21 (Array Int Int)) (v_arrayElimArr_20 (Array Int Int))) (let ((.cse7 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse6 (select v_arrayElimArr_20 .cse7))) (or (and (forall ((v_ArrVal_818 (Array Int Int)) (v_ArrVal_819 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_20 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_20) .cse2 v_ArrVal_819))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_21) .cse2 v_ArrVal_818) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) 4))) .cse2))) (forall ((v_prenex_218 (Array Int Int)) (v_prenex_219 (Array Int Int))) (= (let ((.cse4 (select v_arrayElimArr_20 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_21) .cse4 v_prenex_218)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (select (select .cse3 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_20) .cse4 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)) (+ (select (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) 4)))) 0))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= .cse6 |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= (select v_arrayElimArr_21 .cse7) 0)) (not (= (select |c_#valid| .cse6) 0)))))) is different from false [2021-12-07 01:43:47,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:47,205 INFO L388 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 167 treesize of output 148 [2021-12-07 01:43:47,209 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:47,210 INFO L388 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 148 treesize of output 128 [2021-12-07 01:43:47,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:47,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 4126 treesize of output 3879 [2021-12-07 01:43:47,933 INFO L354 Elim1Store]: treesize reduction 574, result has 48.8 percent of original size [2021-12-07 01:43:47,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 23293 treesize of output 21592 [2021-12-07 01:43:48,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:48,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 21613 treesize of output 14709 [2021-12-07 01:43:48,359 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:48,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 14717 treesize of output 14591 [2021-12-07 01:43:48,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:48,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 13520 treesize of output 12488 [2021-12-07 01:43:48,918 INFO L388 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 12664 treesize of output 11720 [2021-12-07 01:43:49,139 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:49,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 11598 treesize of output 11466 [2021-12-07 01:43:49,486 INFO L388 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 279 treesize of output 203 [2021-12-07 01:43:49,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-07 01:43:49,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:43:49,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-12-07 01:43:49,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216368490] [2021-12-07 01:43:49,666 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:49,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 01:43:49,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 01:43:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=528, Unknown=1, NotChecked=46, Total=650 [2021-12-07 01:43:49,667 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:49,948 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2021-12-07 01:43:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:43:49,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 01:43:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:49,948 INFO L225 Difference]: With dead ends: 77 [2021-12-07 01:43:49,948 INFO L226 Difference]: Without dead ends: 73 [2021-12-07 01:43:49,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=984, Unknown=1, NotChecked=64, Total=1190 [2021-12-07 01:43:49,949 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:49,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 133 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:43:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-07 01:43:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2021-12-07 01:43:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 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) [2021-12-07 01:43:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-12-07 01:43:49,953 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 28 [2021-12-07 01:43:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:49,953 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-12-07 01:43:49,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:43:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-12-07 01:43:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:43:49,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:49,954 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:49,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:43:50,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 01:43:50,156 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:50,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash 849582149, now seen corresponding path program 1 times [2021-12-07 01:43:50,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701204843] [2021-12-07 01:43:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:50,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:50,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:50,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701204843] [2021-12-07 01:43:50,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701204843] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:50,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910774589] [2021-12-07 01:43:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:50,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:50,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:50,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:43:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:50,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-07 01:43:50,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:50,382 INFO L388 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 [2021-12-07 01:43:50,413 INFO L388 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 [2021-12-07 01:43:50,417 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:50,417 INFO L388 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 11 treesize of output 11 [2021-12-07 01:43:50,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:50,433 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:50,444 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:50,464 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:50,491 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-07 01:43:50,491 INFO L388 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 19 treesize of output 22 [2021-12-07 01:43:50,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:50,516 INFO L388 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 26 treesize of output 22 [2021-12-07 01:43:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:43:50,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:51,989 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (not (= (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-07 01:43:51,999 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_903 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_120| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_903))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-07 01:43:52,006 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_903 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_120| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_903))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-07 01:43:52,014 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_903 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_120| Int) (v_ArrVal_897 Int)) (not (= (select (select (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4) v_ArrVal_897)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_903))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) is different from false [2021-12-07 01:43:52,030 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:52,030 INFO L388 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 2 case distinctions, treesize of input 48 treesize of output 41 [2021-12-07 01:43:52,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:52,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 231 [2021-12-07 01:43:52,044 INFO L388 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 200 treesize of output 186 [2021-12-07 01:43:52,091 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:52,171 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:52,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:52,179 INFO L388 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 17 treesize of output 21 [2021-12-07 01:43:52,194 INFO L388 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 6 treesize of output 4 [2021-12-07 01:43:52,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:52,202 INFO L388 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 31 treesize of output 33 [2021-12-07 01:43:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 8 not checked. [2021-12-07 01:43:52,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910774589] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:52,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:52,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 23 [2021-12-07 01:43:52,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057787873] [2021-12-07 01:43:52,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:52,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 01:43:52,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 01:43:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=291, Unknown=4, NotChecked=148, Total=506 [2021-12-07 01:43:52,300 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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) [2021-12-07 01:43:52,859 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_ArrVal_903 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_120| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_903))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (= (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|) 1)) is different from false [2021-12-07 01:43:52,871 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_ArrVal_903 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_120| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_903))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) is different from false [2021-12-07 01:43:52,873 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((v_ArrVal_903 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_120| Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_903))) (store .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120| (store (select .cse0 |v_ULTIMATE.start_main_~p~0#1.base_120|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (= |c_ULTIMATE.start_main_~t~0#1.offset| 0)) is different from false [2021-12-07 01:43:54,249 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (not (= (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (= |c_ULTIMATE.start_main_~p~0#1.offset| 0)) is different from false [2021-12-07 01:43:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:54,289 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-12-07 01:43:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:43:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 01:43:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:54,290 INFO L225 Difference]: With dead ends: 107 [2021-12-07 01:43:54,290 INFO L226 Difference]: Without dead ends: 95 [2021-12-07 01:43:54,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=103, Invalid=427, Unknown=8, NotChecked=392, Total=930 [2021-12-07 01:43:54,291 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:54,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 237 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 220 Invalid, 0 Unknown, 160 Unchecked, 0.1s Time] [2021-12-07 01:43:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-07 01:43:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 68. [2021-12-07 01:43:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 67 states have internal predecessors, (79), 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) [2021-12-07 01:43:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2021-12-07 01:43:54,295 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 28 [2021-12-07 01:43:54,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:54,295 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2021-12-07 01:43:54,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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) [2021-12-07 01:43:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2021-12-07 01:43:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:43:54,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:54,295 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:54,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 01:43:54,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:54,497 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:43:54,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:54,498 INFO L85 PathProgramCache]: Analyzing trace with hash 250235446, now seen corresponding path program 3 times [2021-12-07 01:43:54,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:54,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635530057] [2021-12-07 01:43:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:54,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:54,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:54,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635530057] [2021-12-07 01:43:54,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635530057] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:54,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676863333] [2021-12-07 01:43:54,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:43:54,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:54,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:54,649 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:54,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51030a22-89b2-4db3-ad0d-73c41d38a28d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:43:54,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 01:43:54,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:54,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-07 01:43:54,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:54,761 INFO L388 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 [2021-12-07 01:43:54,797 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:43:54,798 INFO L388 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 17 treesize of output 21 [2021-12-07 01:43:54,802 INFO L388 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 [2021-12-07 01:43:54,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:43:54,822 INFO L388 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 21 treesize of output 20 [2021-12-07 01:43:54,836 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:54,841 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:43:54,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:43:54,856 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:54,864 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:54,887 INFO L388 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 14 treesize of output 16 [2021-12-07 01:43:54,917 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-07 01:43:54,918 INFO L388 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 19 treesize of output 22 [2021-12-07 01:43:55,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-07 01:43:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:43:55,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:57,029 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.base| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_int| |ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset| 3)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 2) (= .cse0 3)))) is different from false [2021-12-07 01:43:57,045 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1019 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_130| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1019))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130|) |c_ULTIMATE.start_main_~t~0#1.offset| 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) is different from false [2021-12-07 01:43:57,056 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1019 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_130| Int)) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1019))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 3 .cse0) (= 2 .cse0)))) is different from false [2021-12-07 01:43:57,067 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1017 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_130| Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1017) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_1019))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0)))) is different from false [2021-12-07 01:43:57,085 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1017 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_130| Int) (|v_ULTIMATE.start_main_~t~0#1.base_52| Int)) (let ((.cse0 (select (select (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1017) |v_ULTIMATE.start_main_~t~0#1.base_52| v_ArrVal_1019))) (store .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130| (store (select .cse1 |v_ULTIMATE.start_main_~p~0#1.base_130|) 0 3))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= 2 .cse0) (= 3 .cse0) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_52|) 0))))) is different from false [2021-12-07 01:43:57,152 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-07 01:43:57,152 INFO L388 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 2 case distinctions, treesize of input 107 treesize of output 73 [2021-12-07 01:43:57,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:43:57,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1879 treesize of output 1857 [2021-12-07 01:43:57,184 INFO L388 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 1939 treesize of output 1819 [2021-12-07 01:43:57,240 INFO L388 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 1795 treesize of output 1735