./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:48:55,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:48:55,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:48:55,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:48:55,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:48:55,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:48:55,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:48:55,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:48:55,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:48:55,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:48:55,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:48:55,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:48:55,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:48:55,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:48:55,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:48:55,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:48:55,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:48:55,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:48:55,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:48:55,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:48:56,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:48:56,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:48:56,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:48:56,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:48:56,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:48:56,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:48:56,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:48:56,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:48:56,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:48:56,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:48:56,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:48:56,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:48:56,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:48:56,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:48:56,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:48:56,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:48:56,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:48:56,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:48:56,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:48:56,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:48:56,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:48:56,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:48:56,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:48:56,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:48:56,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:48:56,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:48:56,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:48:56,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:48:56,115 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:48:56,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:48:56,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:48:56,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:48:56,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:48:56,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:48:56,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:48:56,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:48:56,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:48:56,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:48:56,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:48:56,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:48:56,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:48:56,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:48:56,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:48:56,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:48:56,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:48:56,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:48:56,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:48:56,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:48:56,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:48:56,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:48:56,123 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:48:56,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:48:56,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:48:56,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:48:56,128 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_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2021-11-23 13:48:56,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:48:56,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:48:56,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:48:56,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:48:56,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:48:56,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-23 13:48:56,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/data/90f430ca5/4f1d8159f362426898db48c6b9186012/FLAG4f9619f08 [2021-11-23 13:48:57,335 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:48:57,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2021-11-23 13:48:57,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/data/90f430ca5/4f1d8159f362426898db48c6b9186012/FLAG4f9619f08 [2021-11-23 13:48:57,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/data/90f430ca5/4f1d8159f362426898db48c6b9186012 [2021-11-23 13:48:57,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:48:57,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:48:57,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:48:57,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:48:57,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:48:57,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:57" (1/1) ... [2021-11-23 13:48:57,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5511569d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:57, skipping insertion in model container [2021-11-23 13:48:57,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:57" (1/1) ... [2021-11-23 13:48:57,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:48:57,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:48:58,147 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_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-23 13:48:58,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:48:58,176 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:48:58,275 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_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2021-11-23 13:48:58,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:48:58,325 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:48:58,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58 WrapperNode [2021-11-23 13:48:58,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:48:58,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:48:58,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:48:58,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:48:58,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,450 INFO L137 Inliner]: procedures = 127, calls = 58, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 213 [2021-11-23 13:48:58,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:48:58,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:48:58,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:48:58,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:48:58,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:48:58,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:48:58,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:48:58,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:48:58,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (1/1) ... [2021-11-23 13:48:58,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:48:58,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:48:58,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:48:58,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:48:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:48:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:48:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:48:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:48:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:48:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:48:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:48:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:48:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:48:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:48:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:48:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:48:58,785 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:48:58,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:48:59,450 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:48:59,459 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:48:59,460 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 13:48:59,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:59 BoogieIcfgContainer [2021-11-23 13:48:59,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:48:59,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:48:59,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:48:59,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:48:59,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:57" (1/3) ... [2021-11-23 13:48:59,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b85d4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:59, skipping insertion in model container [2021-11-23 13:48:59,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:58" (2/3) ... [2021-11-23 13:48:59,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b85d4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:59, skipping insertion in model container [2021-11-23 13:48:59,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:59" (3/3) ... [2021-11-23 13:48:59,478 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2021-11-23 13:48:59,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:48:59,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:48:59,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:48:59,568 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 [2021-11-23 13:48:59,569 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:48:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 43 states have internal predecessors, (64), 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) [2021-11-23 13:48:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 13:48:59,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:59,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:59,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:48:59,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash -29659474, now seen corresponding path program 1 times [2021-11-23 13:48:59,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:59,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956683651] [2021-11-23 13:48:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:59,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:59,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:48:59,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956683651] [2021-11-23 13:48:59,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956683651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:48:59,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:48:59,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:48:59,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842334067] [2021-11-23 13:48:59,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:48:59,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:48:59,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:48:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:48:59,993 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 13:49:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:00,088 INFO L93 Difference]: Finished difference Result 82 states and 121 transitions. [2021-11-23 13:49:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:49:00,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-23 13:49:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:00,106 INFO L225 Difference]: With dead ends: 82 [2021-11-23 13:49:00,107 INFO L226 Difference]: Without dead ends: 40 [2021-11-23 13:49:00,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:49:00,119 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 10 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:00,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:49:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-23 13:49:00,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2021-11-23 13:49:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-11-23 13:49:00,171 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2021-11-23 13:49:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:00,172 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-11-23 13:49:00,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 13:49:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-11-23 13:49:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:49:00,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:00,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:00,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:49:00,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:49:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:00,189 INFO L85 PathProgramCache]: Analyzing trace with hash 906905598, now seen corresponding path program 1 times [2021-11-23 13:49:00,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:00,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511915895] [2021-11-23 13:49:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:00,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:49:00,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511915895] [2021-11-23 13:49:00,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511915895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:00,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:00,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:49:00,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598051330] [2021-11-23 13:49:00,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:00,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:49:00,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:49:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:49:00,484 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:00,541 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2021-11-23 13:49:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:49:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 13:49:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:00,546 INFO L225 Difference]: With dead ends: 65 [2021-11-23 13:49:00,546 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 13:49:00,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:49:00,554 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:00,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 95 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:49:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 13:49:00,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2021-11-23 13:49:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 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) [2021-11-23 13:49:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-11-23 13:49:00,575 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 23 [2021-11-23 13:49:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:00,576 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-11-23 13:49:00,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-11-23 13:49:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:49:00,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:00,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:00,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:49:00,580 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:49:00,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash -415005991, now seen corresponding path program 1 times [2021-11-23 13:49:00,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:00,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525888705] [2021-11-23 13:49:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:00,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:02,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525888705] [2021-11-23 13:49:02,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525888705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:49:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594034149] [2021-11-23 13:49:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:02,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:02,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:02,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:49:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:02,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-23 13:49:02,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:02,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:02,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 11 [2021-11-23 13:49:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:03,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:03,406 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 13:49:03,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 13:49:03,637 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 [2021-11-23 13:49:03,850 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 [2021-11-23 13:49:03,866 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 23 treesize of output 11 [2021-11-23 13:49:04,106 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 13:49:04,107 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 91 treesize of output 61 [2021-11-23 13:49:04,139 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-23 13:49:04,140 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 55 treesize of output 39 [2021-11-23 13:49:04,730 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-11-23 13:49:04,730 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 4 case distinctions, treesize of input 134 treesize of output 86 [2021-11-23 13:49:04,793 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-23 13:49:04,794 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 2 case distinctions, treesize of input 114 treesize of output 81 [2021-11-23 13:49:05,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:05,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:05,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:05,778 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-23 13:49:05,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 13:49:06,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:06,421 INFO L354 Elim1Store]: treesize reduction 489, result has 7.6 percent of original size [2021-11-23 13:49:06,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 218 treesize of output 169 [2021-11-23 13:49:06,547 INFO L354 Elim1Store]: treesize reduction 223, result has 11.2 percent of original size [2021-11-23 13:49:06,548 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 3 case distinctions, treesize of input 181 treesize of output 188 [2021-11-23 13:49:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:49:06,593 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-23 13:49:06,594 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 2 case distinctions, treesize of input 160 treesize of output 152 [2021-11-23 13:49:09,924 INFO L354 Elim1Store]: treesize reduction 1445, result has 5.7 percent of original size [2021-11-23 13:49:09,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 31 case distinctions, treesize of input 604 treesize of output 346 [2021-11-23 13:49:10,153 INFO L354 Elim1Store]: treesize reduction 220, result has 15.1 percent of original size [2021-11-23 13:49:10,154 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 2 case distinctions, treesize of input 637 treesize of output 566 [2021-11-23 13:49:10,520 INFO L354 Elim1Store]: treesize reduction 1204, result has 6.4 percent of original size [2021-11-23 13:49:10,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 542 treesize of output 415 [2021-11-23 13:49:10,622 INFO L354 Elim1Store]: treesize reduction 302, result has 8.8 percent of original size [2021-11-23 13:49:10,623 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 2 case distinctions, treesize of input 437 treesize of output 360 [2021-11-23 13:49:11,582 INFO L354 Elim1Store]: treesize reduction 158, result has 0.6 percent of original size [2021-11-23 13:49:11,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 249 treesize of output 108 [2021-11-23 13:49:11,618 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-11-23 13:49:11,619 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 8 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 60 [2021-11-23 13:49:11,764 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 [2021-11-23 13:49:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:11,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:49:14,030 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_DerPreprocessor_6 Int) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (.cse3 (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| v_DerPreprocessor_9)))) (store .cse2 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse3 v_DerPreprocessor_8) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_7))))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) .cse1 v_DerPreprocessor_6))) (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)))) (store .cse5 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse3 |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))))) (store .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 8 (select (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse7 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse7 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse3 |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))))) (store .cse6 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) .cse1 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2021-11-23 13:49:16,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (v_DerPreprocessor_6 Int) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| Int)) (= (let ((.cse7 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (let ((.cse1 (select .cse7 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|)) (.cse2 (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8| 4)) (.cse4 (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| v_DerPreprocessor_9)))) (store .cse3 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse4 v_DerPreprocessor_8) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_7))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_6))) (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse7 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)))) (store .cse6 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse6 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse4 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8|))))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8)))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 13:49:18,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (v_DerPreprocessor_6 Int) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| Int)) (= (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse9 (select |c_#memory_$Pointer$.base| .cse5)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse1 (select .cse9 .cse6)) (.cse2 (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8| 4)) (.cse4 (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_int| .cse5 (store (select |c_#memory_int| .cse5) .cse6 v_DerPreprocessor_9)))) (store .cse3 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse3 |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 v_DerPreprocessor_8) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_7))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_6))) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse5 (store .cse9 .cse6 |c_ULTIMATE.start_node_create_#res#1.base|)))) (store .cse8 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse8 |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 .cse5) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse7 .cse1 (store (select .cse7 .cse1) .cse2 |c_ULTIMATE.start_node_create_#res#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) .cse6 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse11 |c_ULTIMATE.start_node_create_#res#1.base| (store (store (select .cse11 |c_ULTIMATE.start_node_create_#res#1.base|) .cse4 .cse6) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8|))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 13:49:20,760 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_DerPreprocessor_7 Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_10 Int) (|ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| Int) (|ULTIMATE.start_node_create_~temp~0#1.offset| Int) (v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8| Int) (v_DerPreprocessor_8 Int) (|ULTIMATE.start_node_create_~data#1| Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse8 (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 4)) (.cse9 (+ |ULTIMATE.start_node_create_~temp~0#1.offset| 8))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse8 0) .cse9 v_DerPreprocessor_12)))) (let ((.cse16 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse8 0) .cse9 v_DerPreprocessor_13))) (.cse6 (select (select .cse12 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse13 (select .cse12 .cse6)) (.cse7 (select (select .cse16 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse1 (select .cse13 .cse7)) (.cse2 (+ |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8| 4)) (.cse4 (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11) .cse8 v_DerPreprocessor_10) .cse9 |ULTIMATE.start_node_create_~data#1|)))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 v_DerPreprocessor_9))))) (store .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 v_DerPreprocessor_8) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_7))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_6))) (select (select (let ((.cse10 (let ((.cse11 (store .cse12 .cse6 (store .cse13 .cse7 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse11 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse11 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 .cse6) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| .cse1))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 8 (select (select (let ((.cse14 (let ((.cse15 (store .cse16 .cse6 (store (select .cse16 .cse6) .cse7 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse15 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select .cse15 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse4 .cse7) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |v_ULTIMATE.start_dll_circular_insert_~last~1#1.offset_8|))))) (store .cse14 .cse1 (store (select .cse14 .cse1) .cse2 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))))))) is different from false [2021-11-23 13:49:21,241 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 1212247439 treesize of output 1204230411 [2021-11-23 13:53:48,360 WARN L227 SmtUtils]: Spent 4.45m on a formula simplification that was a NOOP. DAG size: 1442 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 13:57:43,852 WARN L227 SmtUtils]: Spent 3.92m on a formula simplification that was a NOOP. DAG size: 1439 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 13:57:44,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 13:57:44,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:57:44,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-23 13:57:44,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481008453] [2021-11-23 13:57:44,398 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 13:57:44,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:57:44,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:57:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:57:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1094, Unknown=4, NotChecked=276, Total=1482 [2021-11-23 13:57:44,405 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-11-23 13:57:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:49,671 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2021-11-23 13:57:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 13:57:49,672 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) Word has length 24 [2021-11-23 13:57:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:49,674 INFO L225 Difference]: With dead ends: 80 [2021-11-23 13:57:49,674 INFO L226 Difference]: Without dead ends: 78 [2021-11-23 13:57:49,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=251, Invalid=2311, Unknown=4, NotChecked=404, Total=2970 [2021-11-23 13:57:49,678 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 198 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:49,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 148 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 13:57:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-23 13:57:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2021-11-23 13:57:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 53 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) [2021-11-23 13:57:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-11-23 13:57:49,694 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2021-11-23 13:57:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:49,694 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-11-23 13:57:49,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-11-23 13:57:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-11-23 13:57:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:57:49,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:49,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:57:49,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 13:57:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:49,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:57:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1255339844, now seen corresponding path program 1 times [2021-11-23 13:57:49,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:57:49,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866200609] [2021-11-23 13:57:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:49,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:57:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:49,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:57:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866200609] [2021-11-23 13:57:49,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866200609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:57:49,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:57:49,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:57:49,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610805592] [2021-11-23 13:57:49,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:57:49,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:57:49,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:57:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:57:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:57:49,993 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:50,026 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2021-11-23 13:57:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:57:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 13:57:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:50,033 INFO L225 Difference]: With dead ends: 70 [2021-11-23 13:57:50,033 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 13:57:50,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:57:50,035 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:50,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 77 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:57:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 13:57:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 13:57:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 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) [2021-11-23 13:57:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2021-11-23 13:57:50,057 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 25 [2021-11-23 13:57:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:50,058 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2021-11-23 13:57:50,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2021-11-23 13:57:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:57:50,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:50,059 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:57:50,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:57:50,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:57:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1555407710, now seen corresponding path program 2 times [2021-11-23 13:57:50,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:57:50,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113054176] [2021-11-23 13:57:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:50,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:57:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:50,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:57:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113054176] [2021-11-23 13:57:50,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113054176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:57:50,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:57:50,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:57:50,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553447843] [2021-11-23 13:57:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:57:50,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:57:50,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:57:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:57:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:57:50,189 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:50,226 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2021-11-23 13:57:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:57:50,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 13:57:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:50,228 INFO L225 Difference]: With dead ends: 71 [2021-11-23 13:57:50,228 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 13:57:50,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:57:50,233 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 77 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:50,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 57 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:57:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 13:57:50,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 13:57:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 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) [2021-11-23 13:57:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-11-23 13:57:50,257 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 25 [2021-11-23 13:57:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:50,257 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-11-23 13:57:50,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-11-23 13:57:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:57:50,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:50,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:57:50,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:57:50,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:57:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2086344865, now seen corresponding path program 1 times [2021-11-23 13:57:50,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:57:50,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645721290] [2021-11-23 13:57:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:50,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:57:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:50,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:57:50,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645721290] [2021-11-23 13:57:50,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645721290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:57:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295784659] [2021-11-23 13:57:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:50,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:50,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:57:50,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:57:50,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:57:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:50,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 13:57:50,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:57:50,557 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 29 treesize of output 21 [2021-11-23 13:57:50,561 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 18 treesize of output 10 [2021-11-23 13:57:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:50,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:57:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:50,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295784659] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:57:50,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:57:50,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-11-23 13:57:50,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839657524] [2021-11-23 13:57:50,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:57:50,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:57:50,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:57:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:57:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:57:50,713 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:50,957 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-11-23 13:57:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:57:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 13:57:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:50,959 INFO L225 Difference]: With dead ends: 82 [2021-11-23 13:57:50,959 INFO L226 Difference]: Without dead ends: 67 [2021-11-23 13:57:50,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:57:50,960 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:50,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 138 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:57:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-23 13:57:50,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2021-11-23 13:57:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 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) [2021-11-23 13:57:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-11-23 13:57:50,981 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 26 [2021-11-23 13:57:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:50,981 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-11-23 13:57:50,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-11-23 13:57:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:57:50,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:50,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:57:51,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:57:51,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 13:57:51,191 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:57:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2029086563, now seen corresponding path program 1 times [2021-11-23 13:57:51,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:57:51,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029288600] [2021-11-23 13:57:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:51,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:57:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:57:51,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:57:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029288600] [2021-11-23 13:57:51,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029288600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:57:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423830427] [2021-11-23 13:57:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:51,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:51,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:57:51,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:57:51,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:57:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:51,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:57:51,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:57:51,992 INFO L354 Elim1Store]: treesize reduction 193, result has 11.1 percent of original size [2021-11-23 13:57:51,993 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 3 case distinctions, treesize of input 41 treesize of output 33 [2021-11-23 13:57:52,083 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 13:57:52,083 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 37 treesize of output 19 [2021-11-23 13:57:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:57:52,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:57:52,337 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 176 treesize of output 168 [2021-11-23 13:57:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:57:52,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423830427] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:57:52,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:57:52,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2021-11-23 13:57:52,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262050451] [2021-11-23 13:57:52,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:57:52,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 13:57:52,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:57:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 13:57:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2021-11-23 13:57:52,630 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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) [2021-11-23 13:57:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:53,171 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2021-11-23 13:57:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:57:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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 [2021-11-23 13:57:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:53,173 INFO L225 Difference]: With dead ends: 94 [2021-11-23 13:57:53,173 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 13:57:53,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 13:57:53,176 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 105 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:53,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 106 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 138 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2021-11-23 13:57:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 13:57:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 13:57:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 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) [2021-11-23 13:57:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-11-23 13:57:53,188 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 26 [2021-11-23 13:57:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:53,189 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-11-23 13:57:53,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 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) [2021-11-23 13:57:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-11-23 13:57:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:57:53,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:53,190 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:57:53,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:57:53,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:53,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:57:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1041397905, now seen corresponding path program 1 times [2021-11-23 13:57:53,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:57:53,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948348879] [2021-11-23 13:57:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:53,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:57:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:53,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:57:53,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948348879] [2021-11-23 13:57:53,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948348879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:57:53,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187965944] [2021-11-23 13:57:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:53,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:57:53,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:57:53,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:57:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:53,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:57:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:57:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:53,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:57:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:57:53,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187965944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:57:53,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:57:53,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-23 13:57:53,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909658789] [2021-11-23 13:57:53,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:57:53,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:57:53,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:57:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:57:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:57:53,942 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:54,062 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-11-23 13:57:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:57:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:57:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:54,064 INFO L225 Difference]: With dead ends: 68 [2021-11-23 13:57:54,064 INFO L226 Difference]: Without dead ends: 55 [2021-11-23 13:57:54,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:57:54,065 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 56 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:54,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 166 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:57:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-23 13:57:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2021-11-23 13:57:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 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) [2021-11-23 13:57:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-11-23 13:57:54,079 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 28 [2021-11-23 13:57:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:54,080 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-11-23 13:57:54,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:54,080 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-11-23 13:57:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:57:54,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:54,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:57:54,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:57:54,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:54,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:57:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1041441615, now seen corresponding path program 1 times [2021-11-23 13:57:54,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:57:54,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218661647] [2021-11-23 13:57:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:54,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:57:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:57:55,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:57:55,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218661647] [2021-11-23 13:57:55,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218661647] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:57:55,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424816911] [2021-11-23 13:57:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:55,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:57:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:57:55,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:57:55,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_515ac72b-2dcd-438f-b2cc-fcd5de9ab04b/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:57:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:55,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-23 13:57:55,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:57:55,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:55,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 11 [2021-11-23 13:57:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:56,025 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 13:57:56,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-23 13:57:56,355 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 11 treesize of output 7 [2021-11-23 13:57:56,371 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 11 treesize of output 7 [2021-11-23 13:57:56,528 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-23 13:57:56,529 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 89 treesize of output 63 [2021-11-23 13:57:56,547 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:57:56,548 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 81 treesize of output 71 [2021-11-23 13:57:56,960 INFO L354 Elim1Store]: treesize reduction 82, result has 21.2 percent of original size [2021-11-23 13:57:56,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 144 treesize of output 88 [2021-11-23 13:57:57,001 INFO L354 Elim1Store]: treesize reduction 122, result has 19.7 percent of original size [2021-11-23 13:57:57,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 119 treesize of output 100 [2021-11-23 13:57:57,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,289 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-23 13:57:57,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 13:57:57,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-23 13:57:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,630 INFO L354 Elim1Store]: treesize reduction 203, result has 12.5 percent of original size [2021-11-23 13:57:57,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 213 treesize of output 142 [2021-11-23 13:57:57,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:57,722 INFO L354 Elim1Store]: treesize reduction 395, result has 11.8 percent of original size [2021-11-23 13:57:57,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 206 treesize of output 209 [2021-11-23 13:58:00,233 INFO L354 Elim1Store]: treesize reduction 934, result has 6.7 percent of original size [2021-11-23 13:58:00,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 649 treesize of output 345 [2021-11-23 13:58:00,390 INFO L354 Elim1Store]: treesize reduction 202, result has 17.6 percent of original size [2021-11-23 13:58:00,390 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 2 case distinctions, treesize of input 840 treesize of output 743 [2021-11-23 13:58:00,695 INFO L354 Elim1Store]: treesize reduction 1901, result has 5.3 percent of original size [2021-11-23 13:58:00,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 715 treesize of output 464 [2021-11-23 13:58:00,713 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 481 treesize of output 439 [2021-11-23 13:58:00,736 INFO L354 Elim1Store]: treesize reduction 77, result has 18.1 percent of original size [2021-11-23 13:58:00,737 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 436 treesize of output 408 [2021-11-23 13:58:06,127 INFO L354 Elim1Store]: treesize reduction 243, result has 11.0 percent of original size [2021-11-23 13:58:06,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 400 treesize of output 169 [2021-11-23 13:58:06,633 INFO L354 Elim1Store]: treesize reduction 278, result has 1.1 percent of original size [2021-11-23 13:58:06,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 35 case distinctions, treesize of input 94 treesize of output 62 [2021-11-23 13:58:06,675 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 [2021-11-23 13:58:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:58:06,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:58:08,915 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (v_DerPreprocessor_16 Int) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_DerPreprocessor_19 Int)) (= |c_ULTIMATE.start_main_~uneq~0#1| (let ((.cse1 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (.cse3 (+ 4 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (let ((.cse7 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (store .cse11 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse11 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse3 |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))))) (store .cse10 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse10 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)))) (.cse4 (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)))) (store .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse9 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse3 |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))))) (store .cse8 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) .cse1 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| v_DerPreprocessor_19)))) (store .cse2 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) .cse3 v_DerPreprocessor_18) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| v_DerPreprocessor_17))))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) .cse1 v_DerPreprocessor_16))) (select (select .cse4 .cse5) .cse6)) (+ 8 (select (select .cse7 .cse5) .cse6)))))))) is different from false [2021-11-23 13:59:45,493 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 1039014 treesize of output 1023174