./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:52:34,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:52:34,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:52:34,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:52:34,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:52:34,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:52:34,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:52:34,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:52:34,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:52:34,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:52:34,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:52:34,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:52:34,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:52:34,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:52:34,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:52:34,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:52:34,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:52:34,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:52:34,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:52:34,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:52:34,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:52:34,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:52:34,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:52:34,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:52:34,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:52:34,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:52:34,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:52:34,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:52:34,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:52:34,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:52:34,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:52:34,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:52:34,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:52:34,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:52:34,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:52:34,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:52:34,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:52:34,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:52:34,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:52:34,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:52:34,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:52:34,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:52:34,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:52:34,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:52:34,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:52:34,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:52:34,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:52:34,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:52:34,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:52:34,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:52:34,539 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:52:34,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:52:34,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:52:34,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:52:34,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:52:34,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:52:34,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:52:34,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:52:34,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:52:34,541 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:52:34,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:52:34,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:52:34,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:52:34,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:52:34,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:52:34,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:52:34,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:52:34,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:52:34,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:52:34,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:52:34,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:52:34,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:52:34,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:52:34,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:52:34,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:52:34,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:52:34,544 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_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 [2021-12-06 23:52:34,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:52:34,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:52:34,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:52:34,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:52:34,749 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:52:34,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-simple/dll2c_remove_all.i [2021-12-06 23:52:34,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/data/065353b06/fc1e580697c941f785790bd8ea45f7bd/FLAGcddc59a75 [2021-12-06 23:52:35,241 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:52:35,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/sv-benchmarks/c/list-simple/dll2c_remove_all.i [2021-12-06 23:52:35,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/data/065353b06/fc1e580697c941f785790bd8ea45f7bd/FLAGcddc59a75 [2021-12-06 23:52:35,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/data/065353b06/fc1e580697c941f785790bd8ea45f7bd [2021-12-06 23:52:35,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:52:35,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:52:35,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:52:35,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:52:35,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:52:35,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10112f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35, skipping insertion in model container [2021-12-06 23:52:35,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:52:35,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:52:35,487 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_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2021-12-06 23:52:35,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:52:35,495 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:52:35,523 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_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2021-12-06 23:52:35,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:52:35,546 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:52:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35 WrapperNode [2021-12-06 23:52:35,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:52:35,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:52:35,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:52:35,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:52:35,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,579 INFO L137 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 105 [2021-12-06 23:52:35,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:52:35,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:52:35,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:52:35,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:52:35,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:52:35,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:52:35,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:52:35,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:52:35,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (1/1) ... [2021-12-06 23:52:35,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:52:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:52:35,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:52:35,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:52:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:52:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-06 23:52:35,675 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:52:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:52:35,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:52:35,746 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:52:35,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:52:35,887 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:52:35,891 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:52:35,891 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:52:35,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:52:35 BoogieIcfgContainer [2021-12-06 23:52:35,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:52:35,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:52:35,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:52:35,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:52:35,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:52:35" (1/3) ... [2021-12-06 23:52:35,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c5eadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:52:35, skipping insertion in model container [2021-12-06 23:52:35,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:52:35" (2/3) ... [2021-12-06 23:52:35,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c5eadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:52:35, skipping insertion in model container [2021-12-06 23:52:35,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:52:35" (3/3) ... [2021-12-06 23:52:35,898 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all.i [2021-12-06 23:52:35,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:52:35,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:52:35,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:52:35,940 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:52:35,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:52:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:52:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:52:35,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:35,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:35,957 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:52:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1715695268, now seen corresponding path program 1 times [2021-12-06 23:52:35,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:35,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340496188] [2021-12-06 23:52:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:35,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:52:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:52:36,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:36,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340496188] [2021-12-06 23:52:36,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340496188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:52:36,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:52:36,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:52:36,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637005519] [2021-12-06 23:52:36,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:52:36,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:52:36,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:52:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:52:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:52:36,165 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:52:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:36,210 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-12-06 23:52:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:52:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 23:52:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:36,216 INFO L225 Difference]: With dead ends: 39 [2021-12-06 23:52:36,217 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 23:52:36,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:52:36,221 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:36,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:52:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 23:52:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 23:52:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:52:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-06 23:52:36,248 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-12-06 23:52:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:52:36,249 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-06 23:52:36,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:52:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-06 23:52:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:52:36,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:36,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:36,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:52:36,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:52:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1231917993, now seen corresponding path program 1 times [2021-12-06 23:52:36,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820905902] [2021-12-06 23:52:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:36,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:52:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:52:36,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:36,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820905902] [2021-12-06 23:52:36,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820905902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:52:36,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:52:36,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:52:36,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375120192] [2021-12-06 23:52:36,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:52:36,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:52:36,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:52:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:52:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:52:36,348 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:52:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:36,382 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-12-06 23:52:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:52:36,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 23:52:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:36,384 INFO L225 Difference]: With dead ends: 37 [2021-12-06 23:52:36,384 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 23:52:36,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:52:36,386 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:36,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:52:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 23:52:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-12-06 23:52:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:52:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-06 23:52:36,394 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2021-12-06 23:52:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:52:36,395 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-06 23:52:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:52:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-06 23:52:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 23:52:36,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:36,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:36,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:52:36,397 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:52:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash 899729579, now seen corresponding path program 1 times [2021-12-06 23:52:36,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:36,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429203333] [2021-12-06 23:52:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:36,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:52:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:52:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:52:36,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:36,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429203333] [2021-12-06 23:52:36,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429203333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:52:36,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:52:36,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:52:36,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461061558] [2021-12-06 23:52:36,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:52:36,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:52:36,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:52:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:52:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:52:36,527 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:52:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:36,575 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-12-06 23:52:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:52:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-12-06 23:52:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:36,576 INFO L225 Difference]: With dead ends: 31 [2021-12-06 23:52:36,576 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 23:52:36,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:52:36,578 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:36,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:52:36,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 23:52:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-06 23:52:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:52:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-12-06 23:52:36,582 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 26 [2021-12-06 23:52:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:52:36,582 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-12-06 23:52:36,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:52:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-12-06 23:52:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:52:36,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:36,583 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:36,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:52:36,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:52:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 491955104, now seen corresponding path program 1 times [2021-12-06 23:52:36,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:36,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561633003] [2021-12-06 23:52:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:36,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:52:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:52:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:52:36,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:36,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561633003] [2021-12-06 23:52:36,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561633003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:52:36,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575854745] [2021-12-06 23:52:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:36,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:52:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:52:36,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:52:36,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:52:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:36,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:52:36,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:52:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:52:36,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:52:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:52:36,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575854745] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:52:36,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:52:36,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-06 23:52:36,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450787721] [2021-12-06 23:52:36,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:52:36,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:52:36,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:52:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:52:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:52:36,942 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:52:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:36,990 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-12-06 23:52:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:52:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-12-06 23:52:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:36,991 INFO L225 Difference]: With dead ends: 32 [2021-12-06 23:52:36,991 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 23:52:36,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:52:36,993 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:36,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:52:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 23:52:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 23:52:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:52:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-06 23:52:37,003 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 29 [2021-12-06 23:52:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:52:37,003 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-06 23:52:37,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:52:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-06 23:52:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:52:37,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:37,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:37,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:52:37,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:52:37,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:52:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1349916533, now seen corresponding path program 2 times [2021-12-06 23:52:37,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:37,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133625457] [2021-12-06 23:52:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:37,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:52:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:52:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:52:37,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:37,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133625457] [2021-12-06 23:52:37,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133625457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:52:37,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:52:37,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:52:37,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667332899] [2021-12-06 23:52:37,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:52:37,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:52:37,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:52:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:52:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:52:37,389 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:52:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:37,477 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2021-12-06 23:52:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:52:37,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-06 23:52:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:37,478 INFO L225 Difference]: With dead ends: 37 [2021-12-06 23:52:37,478 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 23:52:37,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:52:37,480 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:37,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 89 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:52:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 23:52:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-12-06 23:52:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:52:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-06 23:52:37,484 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2021-12-06 23:52:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:52:37,484 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-06 23:52:37,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:52:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-06 23:52:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:52:37,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:37,485 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:37,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:52:37,486 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:52:37,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1292658231, now seen corresponding path program 1 times [2021-12-06 23:52:37,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:37,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535357542] [2021-12-06 23:52:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:37,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:52:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:52:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:52:37,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:37,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535357542] [2021-12-06 23:52:37,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535357542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:52:37,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696199464] [2021-12-06 23:52:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:37,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:52:37,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:52:37,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:52:37,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:52:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:37,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-06 23:52:37,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:52:37,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:52:38,028 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:52:38,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 23:52:38,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:52:38,089 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:52:38,090 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 26 treesize of output 27 [2021-12-06 23:52:38,174 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-12-06 23:52:38,174 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 2 case distinctions, treesize of input 58 treesize of output 31 [2021-12-06 23:52:38,287 INFO L354 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2021-12-06 23:52:38,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 51 [2021-12-06 23:52:38,291 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 [2021-12-06 23:52:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:52:38,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:52:38,343 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 [2021-12-06 23:52:40,498 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.offset| Int) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|)))) (store .cse2 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| .cse0)) (not (= (select (select .cse1 .cse0) |c_ULTIMATE.start_dll_circular_create_~head~0#1.offset|) .cse0)))))) is different from false [2021-12-06 23:52:42,526 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.offset| Int) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)))) (store .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (not (= (select (select .cse1 .cse0) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) .cse0)))))) is different from false [2021-12-06 23:52:42,542 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.offset| Int) (v_ArrVal_728 (Array Int Int)) (|ULTIMATE.start_main_~#s~0#1.base| Int)) (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| v_ArrVal_728))) (store .cse3 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) |ULTIMATE.start_dll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|))))) (store .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4) |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|))))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse0 (select (select .cse1 .cse0) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) (not (= |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base| .cse0)))))) is different from false [2021-12-06 23:52:42,557 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:52:42,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 305 treesize of output 185 [2021-12-06 23:52:43,191 INFO L354 Elim1Store]: treesize reduction 433, result has 36.4 percent of original size [2021-12-06 23:52:43,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 271209 treesize of output 245030 [2021-12-06 23:52:45,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:52:45,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:52:45,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 478871 treesize of output 448123 [2021-12-06 23:53:15,376 WARN L227 SmtUtils]: Spent 30.24s on a formula simplification. DAG size of input: 1753 DAG size of output: 1730 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 23:53:16,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 23:53:16,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:53:16,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 23:53:16,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995195396] [2021-12-06 23:53:16,144 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:53:16,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 23:53:16,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:53:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 23:53:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=795, Unknown=3, NotChecked=174, Total=1056 [2021-12-06 23:53:16,146 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:53:16,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:53:16,384 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2021-12-06 23:53:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:53:16,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-06 23:53:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:53:16,386 INFO L225 Difference]: With dead ends: 47 [2021-12-06 23:53:16,386 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 23:53:16,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=130, Invalid=1139, Unknown=3, NotChecked=210, Total=1482 [2021-12-06 23:53:16,387 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:53:16,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 180 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:53:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 23:53:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-12-06 23:53:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 23:53:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2021-12-06 23:53:16,393 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 32 [2021-12-06 23:53:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:53:16,393 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2021-12-06 23:53:16,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:53:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2021-12-06 23:53:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:53:16,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:53:16,394 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:53:16,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:53:16,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 23:53:16,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:53:16,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:53:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash -612599861, now seen corresponding path program 1 times [2021-12-06 23:53:16,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:53:16,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220520202] [2021-12-06 23:53:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:16,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:53:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:53:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:17,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:53:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:53:17,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:53:17,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220520202] [2021-12-06 23:53:17,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220520202] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:53:17,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487476633] [2021-12-06 23:53:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:53:17,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:53:17,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:53:17,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:53:17,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac9ba91-e2e9-4b2d-ad6d-eab3c44c0800/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:53:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:53:17,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-06 23:53:17,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:53:17,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:53:17,387 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:53:17,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 23:53:17,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:53:17,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:53:17,497 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:53:17,497 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 45 treesize of output 42 [2021-12-06 23:53:17,502 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 18 treesize of output 20 [2021-12-06 23:53:17,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:17,629 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-12-06 23:53:17,629 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 2 case distinctions, treesize of input 94 treesize of output 55 [2021-12-06 23:53:17,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:17,635 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 28 treesize of output 25 [2021-12-06 23:53:17,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:17,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-06 23:53:17,969 INFO L354 Elim1Store]: treesize reduction 647, result has 18.4 percent of original size [2021-12-06 23:53:17,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 1787 treesize of output 611 [2021-12-06 23:53:17,993 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-12-06 23:53:17,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 894 treesize of output 610 [2021-12-06 23:53:18,161 INFO L354 Elim1Store]: treesize reduction 996, result has 16.5 percent of original size [2021-12-06 23:53:18,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 27 case distinctions, treesize of input 1248 treesize of output 848 [2021-12-06 23:53:18,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2021-12-06 23:53:18,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-06 23:53:18,224 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 12 treesize of output 11 [2021-12-06 23:53:18,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 58 [2021-12-06 23:53:18,270 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 12 treesize of output 11 [2021-12-06 23:53:18,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-12-06 23:53:18,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:18,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 119 treesize of output 80 [2021-12-06 23:53:18,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:18,375 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:18,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 23:53:18,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:18,661 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:18,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 439 treesize of output 349 [2021-12-06 23:53:18,707 INFO L354 Elim1Store]: treesize reduction 68, result has 35.2 percent of original size [2021-12-06 23:53:18,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 625 treesize of output 503 [2021-12-06 23:53:18,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:18,729 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:18,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 264 treesize of output 248 [2021-12-06 23:53:18,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:53:19,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:19,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-12-06 23:53:19,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:19,312 INFO L354 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2021-12-06 23:53:19,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 22 [2021-12-06 23:53:19,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:19,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-12-06 23:53:19,833 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 23:53:19,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:19,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-12-06 23:53:23,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:23,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:23,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 337 treesize of output 305 [2021-12-06 23:53:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:23,715 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:23,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 296 [2021-12-06 23:53:24,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:53:24,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:53:24,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:53:24,985 INFO L354 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2021-12-06 23:53:24,985 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 124 treesize of output 105 [2021-12-06 23:53:24,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 9 treesize of output 7 [2021-12-06 23:53:25,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:53:25,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 165 [2021-12-06 23:53:25,539 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:25,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 397 treesize of output 453 [2021-12-06 23:53:25,559 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:53:25,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 453 treesize of output 487 [2021-12-06 23:53:25,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 23:53:27,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:53:27,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-06 23:54:41,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:54:42,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:54:45,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:55:05,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-12-06 23:55:05,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:55:06,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-12-06 23:55:06,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:55:07,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:55:08,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 9 [2021-12-06 23:55:48,980 WARN L227 SmtUtils]: Spent 22.85s on a formula simplification. DAG size of input: 1367 DAG size of output: 1063 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 23:55:48,982 INFO L354 Elim1Store]: treesize reduction 1892, result has 66.4 percent of original size [2021-12-06 23:55:48,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 28 select indices, 28 select index equivalence classes, 0 disjoint index pairs (out of 378 index pairs), introduced 34 new quantified variables, introduced 377 case distinctions, treesize of input 1181 treesize of output 4372