./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:06:27,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:06:27,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:06:27,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:06:27,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:06:27,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:06:27,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:06:27,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:06:27,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:06:27,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:06:27,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:06:27,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:06:27,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:06:27,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:06:27,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:06:27,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:06:27,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:06:27,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:06:27,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:06:27,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:06:27,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:06:27,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:06:27,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:06:27,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:06:27,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:06:27,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:06:27,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:06:27,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:06:27,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:06:27,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:06:27,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:06:27,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:06:27,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:06:27,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:06:27,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:06:27,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:06:27,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:06:27,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:06:27,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:06:27,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:06:27,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:06:27,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 14:06:27,791 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:06:27,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:06:27,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:06:27,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:06:27,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:06:27,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:06:27,795 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:06:27,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:06:27,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:06:27,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:06:27,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:06:27,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:06:27,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:06:27,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:06:27,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:06:27,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:06:27,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:06:27,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:06:27,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:06:27,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:06:27,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:06:27,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:06:27,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:06:27,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:06:27,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:06:27,800 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:06:27,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:06:27,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:06:27,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:06:27,802 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_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d [2021-11-23 14:06:28,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:06:28,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:06:28,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:06:28,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:06:28,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:06:28,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-23 14:06:28,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/data/5d27b364a/f4f66163c62c4debbc7a762824a8f8e0/FLAGebb112f87 [2021-11-23 14:06:29,610 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:06:29,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-23 14:06:29,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/data/5d27b364a/f4f66163c62c4debbc7a762824a8f8e0/FLAGebb112f87 [2021-11-23 14:06:29,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/data/5d27b364a/f4f66163c62c4debbc7a762824a8f8e0 [2021-11-23 14:06:29,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:06:29,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:06:29,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:06:29,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:06:29,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:06:29,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:29" (1/1) ... [2021-11-23 14:06:29,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f232d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:29, skipping insertion in model container [2021-11-23 14:06:29,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:29" (1/1) ... [2021-11-23 14:06:29,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:06:29,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:06:31,858 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_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-23 14:06:33,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:06:33,632 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:06:33,842 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_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-23 14:06:34,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:06:34,575 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:06:34,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34 WrapperNode [2021-11-23 14:06:34,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:06:34,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:06:34,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:06:34,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:06:34,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:34,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:35,433 INFO L137 Inliner]: procedures = 318, calls = 3918, calls flagged for inlining = 797, calls inlined = 1443, statements flattened = 22086 [2021-11-23 14:06:35,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:06:35,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:06:35,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:06:35,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:06:35,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:35,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:35,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:35,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:36,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:36,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:36,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:36,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:06:36,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:06:36,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:06:36,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:06:36,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (1/1) ... [2021-11-23 14:06:36,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:06:36,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:06:36,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:06:36,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-23 14:06:37,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-23 14:06:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2021-11-23 14:06:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2021-11-23 14:06:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-11-23 14:06:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-11-23 14:06:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2021-11-23 14:06:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2021-11-23 14:06:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:06:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 14:06:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 14:06:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-23 14:06:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-23 14:06:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-23 14:06:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-23 14:06:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_18 [2021-11-23 14:06:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_18 [2021-11-23 14:06:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2021-11-23 14:06:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2021-11-23 14:06:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:06:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure read_int_callback [2021-11-23 14:06:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure read_int_callback [2021-11-23 14:06:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 14:06:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure read_ctrl_callback [2021-11-23 14:06:37,045 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ctrl_callback [2021-11-23 14:06:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-23 14:06:37,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-23 14:06:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-23 14:06:37,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-23 14:06:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2021-11-23 14:06:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2021-11-23 14:06:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:06:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2021-11-23 14:06:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2021-11-23 14:06:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:06:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:06:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2021-11-23 14:06:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2021-11-23 14:06:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:06:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure write_command_callback [2021-11-23 14:06:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure write_command_callback [2021-11-23 14:06:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 14:06:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 14:06:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 14:06:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 14:06:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure write_ctrl_callback [2021-11-23 14:06:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ctrl_callback [2021-11-23 14:06:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure read_iso_callback [2021-11-23 14:06:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure read_iso_callback [2021-11-23 14:06:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:06:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2021-11-23 14:06:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2021-11-23 14:06:37,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:06:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:06:38,274 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:06:38,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:06:54,806 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:06:54,885 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:06:54,885 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 14:06:54,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:54 BoogieIcfgContainer [2021-11-23 14:06:54,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:06:54,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:06:54,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:06:54,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:06:54,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:29" (1/3) ... [2021-11-23 14:06:54,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ce88a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:54, skipping insertion in model container [2021-11-23 14:06:54,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:34" (2/3) ... [2021-11-23 14:06:54,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ce88a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:54, skipping insertion in model container [2021-11-23 14:06:54,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:54" (3/3) ... [2021-11-23 14:06:54,908 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-23 14:06:54,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:06:54,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 14:06:55,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:06:55,039 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:06:55,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 14:06:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 3957 states, 3846 states have (on average 1.4864794591783672) internal successors, (5717), 3884 states have internal predecessors, (5717), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-23 14:06:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 14:06:55,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:55,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:06:55,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:06:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1328521866, now seen corresponding path program 1 times [2021-11-23 14:06:55,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:55,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979767494] [2021-11-23 14:06:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:55,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:06:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:06:56,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:06:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979767494] [2021-11-23 14:06:56,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979767494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:06:56,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:06:56,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:06:56,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550819353] [2021-11-23 14:06:56,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:06:56,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:06:56,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:06:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:06:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:06:56,319 INFO L87 Difference]: Start difference. First operand has 3957 states, 3846 states have (on average 1.4864794591783672) internal successors, (5717), 3884 states have internal predecessors, (5717), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:06:57,158 INFO L93 Difference]: Finished difference Result 11739 states and 17662 transitions. [2021-11-23 14:06:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:06:57,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 14:06:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:06:57,272 INFO L225 Difference]: With dead ends: 11739 [2021-11-23 14:06:57,273 INFO L226 Difference]: Without dead ends: 7763 [2021-11-23 14:06:57,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:06:57,325 INFO L933 BasicCegarLoop]: 5913 mSDtfsCounter, 5707 mSDsluCounter, 5793 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5707 SdHoareTripleChecker+Valid, 11706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:06:57,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5707 Valid, 11706 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:06:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7763 states. [2021-11-23 14:06:57,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7763 to 7763. [2021-11-23 14:06:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7763 states, 7548 states have (on average 1.4754901960784315) internal successors, (11137), 7618 states have internal predecessors, (11137), 170 states have call successors, (170), 40 states have call predecessors, (170), 40 states have return successors, (170), 128 states have call predecessors, (170), 170 states have call successors, (170) [2021-11-23 14:06:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7763 states to 7763 states and 11477 transitions. [2021-11-23 14:06:57,945 INFO L78 Accepts]: Start accepts. Automaton has 7763 states and 11477 transitions. Word has length 37 [2021-11-23 14:06:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:06:57,945 INFO L470 AbstractCegarLoop]: Abstraction has 7763 states and 11477 transitions. [2021-11-23 14:06:57,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7763 states and 11477 transitions. [2021-11-23 14:06:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 14:06:57,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:57,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:06:57,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:06:57,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:06:57,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 877730426, now seen corresponding path program 1 times [2021-11-23 14:06:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:57,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627240620] [2021-11-23 14:06:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:57,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:06:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:06:58,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:06:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627240620] [2021-11-23 14:06:58,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627240620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:06:58,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:06:58,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:06:58,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84857884] [2021-11-23 14:06:58,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:06:58,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:06:58,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:06:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:06:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:06:58,673 INFO L87 Difference]: Start difference. First operand 7763 states and 11477 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:00,056 INFO L93 Difference]: Finished difference Result 23219 states and 34860 transitions. [2021-11-23 14:07:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:00,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-23 14:07:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:00,206 INFO L225 Difference]: With dead ends: 23219 [2021-11-23 14:07:00,206 INFO L226 Difference]: Without dead ends: 15490 [2021-11-23 14:07:00,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:00,254 INFO L933 BasicCegarLoop]: 5984 mSDtfsCounter, 5816 mSDsluCounter, 5689 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5816 SdHoareTripleChecker+Valid, 11673 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:00,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5816 Valid, 11673 Invalid, 149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:07:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15490 states. [2021-11-23 14:07:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15490 to 15478. [2021-11-23 14:07:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15478 states, 15053 states have (on average 1.4721982329103833) internal successors, (22161), 15189 states have internal predecessors, (22161), 340 states have call successors, (340), 80 states have call predecessors, (340), 80 states have return successors, (510), 256 states have call predecessors, (510), 340 states have call successors, (510) [2021-11-23 14:07:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15478 states to 15478 states and 23011 transitions. [2021-11-23 14:07:01,035 INFO L78 Accepts]: Start accepts. Automaton has 15478 states and 23011 transitions. Word has length 40 [2021-11-23 14:07:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:01,037 INFO L470 AbstractCegarLoop]: Abstraction has 15478 states and 23011 transitions. [2021-11-23 14:07:01,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 15478 states and 23011 transitions. [2021-11-23 14:07:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 14:07:01,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:01,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:01,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:07:01,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1439849856, now seen corresponding path program 1 times [2021-11-23 14:07:01,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:01,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123501366] [2021-11-23 14:07:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:01,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:01,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:01,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123501366] [2021-11-23 14:07:01,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123501366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:01,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:01,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:07:01,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175366170] [2021-11-23 14:07:01,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:01,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:01,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:01,609 INFO L87 Difference]: Start difference. First operand 15478 states and 23011 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:03,102 INFO L93 Difference]: Finished difference Result 46348 states and 70450 transitions. [2021-11-23 14:07:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:03,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-23 14:07:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:03,354 INFO L225 Difference]: With dead ends: 46348 [2021-11-23 14:07:03,354 INFO L226 Difference]: Without dead ends: 30904 [2021-11-23 14:07:03,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:03,474 INFO L933 BasicCegarLoop]: 6202 mSDtfsCounter, 5838 mSDsluCounter, 5750 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 11952 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:03,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5838 Valid, 11952 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:07:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30904 states. [2021-11-23 14:07:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30904 to 30893. [2021-11-23 14:07:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30893 states, 30048 states have (on average 1.4717452076677315) internal successors, (44223), 30316 states have internal predecessors, (44223), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-23 14:07:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30893 states to 30893 states and 46433 transitions. [2021-11-23 14:07:05,348 INFO L78 Accepts]: Start accepts. Automaton has 30893 states and 46433 transitions. Word has length 41 [2021-11-23 14:07:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:05,349 INFO L470 AbstractCegarLoop]: Abstraction has 30893 states and 46433 transitions. [2021-11-23 14:07:05,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 30893 states and 46433 transitions. [2021-11-23 14:07:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 14:07:05,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:05,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:05,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:07:05,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1685683013, now seen corresponding path program 1 times [2021-11-23 14:07:05,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:05,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840294487] [2021-11-23 14:07:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:05,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:05,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:05,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840294487] [2021-11-23 14:07:05,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840294487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:05,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:05,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:07:05,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756362480] [2021-11-23 14:07:05,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:05,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:05,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:05,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:05,990 INFO L87 Difference]: Start difference. First operand 30893 states and 46433 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:07,065 INFO L93 Difference]: Finished difference Result 30898 states and 46437 transitions. [2021-11-23 14:07:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:07,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 14:07:07,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:07,221 INFO L225 Difference]: With dead ends: 30898 [2021-11-23 14:07:07,221 INFO L226 Difference]: Without dead ends: 30896 [2021-11-23 14:07:07,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:07,234 INFO L933 BasicCegarLoop]: 6206 mSDtfsCounter, 5835 mSDsluCounter, 5749 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5835 SdHoareTripleChecker+Valid, 11955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:07,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5835 Valid, 11955 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:07:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30896 states. [2021-11-23 14:07:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30896 to 30894. [2021-11-23 14:07:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30894 states, 30049 states have (on average 1.4717295084695) internal successors, (44224), 30317 states have internal predecessors, (44224), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-23 14:07:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30894 states to 30894 states and 46434 transitions. [2021-11-23 14:07:08,705 INFO L78 Accepts]: Start accepts. Automaton has 30894 states and 46434 transitions. Word has length 42 [2021-11-23 14:07:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:08,706 INFO L470 AbstractCegarLoop]: Abstraction has 30894 states and 46434 transitions. [2021-11-23 14:07:08,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30894 states and 46434 transitions. [2021-11-23 14:07:08,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 14:07:08,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:08,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:08,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:07:08,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash 716576299, now seen corresponding path program 1 times [2021-11-23 14:07:08,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:08,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231638021] [2021-11-23 14:07:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:08,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:09,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:09,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231638021] [2021-11-23 14:07:09,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231638021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:09,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:09,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:07:09,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412156640] [2021-11-23 14:07:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:09,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:09,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:09,299 INFO L87 Difference]: Start difference. First operand 30894 states and 46434 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:10,361 INFO L93 Difference]: Finished difference Result 30894 states and 46434 transitions. [2021-11-23 14:07:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 14:07:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:10,541 INFO L225 Difference]: With dead ends: 30894 [2021-11-23 14:07:10,541 INFO L226 Difference]: Without dead ends: 30892 [2021-11-23 14:07:10,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:10,563 INFO L933 BasicCegarLoop]: 5804 mSDtfsCounter, 5764 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5764 SdHoareTripleChecker+Valid, 5804 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:10,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5764 Valid, 5804 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:07:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30892 states. [2021-11-23 14:07:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30892 to 30892. [2021-11-23 14:07:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30892 states, 30048 states have (on average 1.4717119275825346) internal successors, (44222), 30315 states have internal predecessors, (44222), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-23 14:07:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30892 states to 30892 states and 46432 transitions. [2021-11-23 14:07:12,030 INFO L78 Accepts]: Start accepts. Automaton has 30892 states and 46432 transitions. Word has length 43 [2021-11-23 14:07:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:12,032 INFO L470 AbstractCegarLoop]: Abstraction has 30892 states and 46432 transitions. [2021-11-23 14:07:12,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 30892 states and 46432 transitions. [2021-11-23 14:07:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 14:07:12,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:12,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:12,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:07:12,039 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 739039248, now seen corresponding path program 1 times [2021-11-23 14:07:12,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:12,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958742610] [2021-11-23 14:07:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:12,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:12,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:12,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958742610] [2021-11-23 14:07:12,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958742610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:12,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:12,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:07:12,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841873285] [2021-11-23 14:07:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:12,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:12,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:12,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:12,602 INFO L87 Difference]: Start difference. First operand 30892 states and 46432 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:13,687 INFO L93 Difference]: Finished difference Result 30892 states and 46432 transitions. [2021-11-23 14:07:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 14:07:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:13,869 INFO L225 Difference]: With dead ends: 30892 [2021-11-23 14:07:13,869 INFO L226 Difference]: Without dead ends: 30852 [2021-11-23 14:07:13,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:13,890 INFO L933 BasicCegarLoop]: 5803 mSDtfsCounter, 5761 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5761 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:13,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5761 Valid, 5803 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:07:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30852 states. [2021-11-23 14:07:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30852 to 30852. [2021-11-23 14:07:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30852 states, 30009 states have (on average 1.4718917658035922) internal successors, (44170), 30275 states have internal predecessors, (44170), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-23 14:07:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30852 states to 30852 states and 46380 transitions. [2021-11-23 14:07:15,308 INFO L78 Accepts]: Start accepts. Automaton has 30852 states and 46380 transitions. Word has length 44 [2021-11-23 14:07:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:15,309 INFO L470 AbstractCegarLoop]: Abstraction has 30852 states and 46380 transitions. [2021-11-23 14:07:15,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 30852 states and 46380 transitions. [2021-11-23 14:07:15,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 14:07:15,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:15,372 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:15,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:07:15,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash -556728302, now seen corresponding path program 1 times [2021-11-23 14:07:15,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:15,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509199872] [2021-11-23 14:07:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:15,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:07:15,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:15,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509199872] [2021-11-23 14:07:15,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509199872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:15,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:15,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:07:15,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783101090] [2021-11-23 14:07:15,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:15,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:15,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:15,791 INFO L87 Difference]: Start difference. First operand 30852 states and 46380 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:18,077 INFO L93 Difference]: Finished difference Result 87939 states and 132669 transitions. [2021-11-23 14:07:18,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:18,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-23 14:07:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:18,399 INFO L225 Difference]: With dead ends: 87939 [2021-11-23 14:07:18,400 INFO L226 Difference]: Without dead ends: 57121 [2021-11-23 14:07:18,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:18,525 INFO L933 BasicCegarLoop]: 5944 mSDtfsCounter, 4980 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 11680 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:18,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4980 Valid, 11680 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:07:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57121 states. [2021-11-23 14:07:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57121 to 57016. [2021-11-23 14:07:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57016 states, 55373 states have (on average 1.479114369819226) internal successors, (81903), 55903 states have internal predecessors, (81903), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-23 14:07:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57016 states to 57016 states and 86193 transitions. [2021-11-23 14:07:21,241 INFO L78 Accepts]: Start accepts. Automaton has 57016 states and 86193 transitions. Word has length 104 [2021-11-23 14:07:21,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:21,242 INFO L470 AbstractCegarLoop]: Abstraction has 57016 states and 86193 transitions. [2021-11-23 14:07:21,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 57016 states and 86193 transitions. [2021-11-23 14:07:21,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 14:07:21,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:21,356 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:21,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:07:21,358 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:21,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1117343723, now seen corresponding path program 1 times [2021-11-23 14:07:21,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:21,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314855957] [2021-11-23 14:07:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:21,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 14:07:21,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:21,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314855957] [2021-11-23 14:07:21,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314855957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:21,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:21,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:07:21,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783414305] [2021-11-23 14:07:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:21,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:07:21,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:07:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:07:21,724 INFO L87 Difference]: Start difference. First operand 57016 states and 86193 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:25,719 INFO L93 Difference]: Finished difference Result 130792 states and 197262 transitions. [2021-11-23 14:07:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:07:25,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-23 14:07:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:26,163 INFO L225 Difference]: With dead ends: 130792 [2021-11-23 14:07:26,163 INFO L226 Difference]: Without dead ends: 73810 [2021-11-23 14:07:26,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:07:26,312 INFO L933 BasicCegarLoop]: 9196 mSDtfsCounter, 9291 mSDsluCounter, 5867 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9291 SdHoareTripleChecker+Valid, 15063 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:26,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9291 Valid, 15063 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 14:07:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73810 states. [2021-11-23 14:07:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73810 to 57024. [2021-11-23 14:07:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57024 states, 55381 states have (on average 1.4789368194868275) internal successors, (81905), 55911 states have internal predecessors, (81905), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-23 14:07:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57024 states to 57024 states and 86195 transitions. [2021-11-23 14:07:29,017 INFO L78 Accepts]: Start accepts. Automaton has 57024 states and 86195 transitions. Word has length 126 [2021-11-23 14:07:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:29,018 INFO L470 AbstractCegarLoop]: Abstraction has 57024 states and 86195 transitions. [2021-11-23 14:07:29,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 57024 states and 86195 transitions. [2021-11-23 14:07:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 14:07:29,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:29,108 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:29,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:07:29,109 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -157217401, now seen corresponding path program 1 times [2021-11-23 14:07:29,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:29,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235205791] [2021-11-23 14:07:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:29,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:07:29,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:29,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235205791] [2021-11-23 14:07:29,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235205791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:29,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:29,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:07:29,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082377447] [2021-11-23 14:07:29,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:29,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:29,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:29,863 INFO L87 Difference]: Start difference. First operand 57024 states and 86195 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:32,404 INFO L93 Difference]: Finished difference Result 114350 states and 172782 transitions. [2021-11-23 14:07:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-23 14:07:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:32,641 INFO L225 Difference]: With dead ends: 114350 [2021-11-23 14:07:32,641 INFO L226 Difference]: Without dead ends: 57360 [2021-11-23 14:07:32,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:32,772 INFO L933 BasicCegarLoop]: 5792 mSDtfsCounter, 51 mSDsluCounter, 5783 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 11575 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:32,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 11575 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:07:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57360 states. [2021-11-23 14:07:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57360 to 57048. [2021-11-23 14:07:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57048 states, 55405 states have (on average 1.4787293565562676) internal successors, (81929), 55935 states have internal predecessors, (81929), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-23 14:07:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57048 states to 57048 states and 86219 transitions. [2021-11-23 14:07:35,604 INFO L78 Accepts]: Start accepts. Automaton has 57048 states and 86219 transitions. Word has length 128 [2021-11-23 14:07:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:35,604 INFO L470 AbstractCegarLoop]: Abstraction has 57048 states and 86219 transitions. [2021-11-23 14:07:35,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 57048 states and 86219 transitions. [2021-11-23 14:07:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-23 14:07:35,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:35,673 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:35,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:07:35,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:35,674 INFO L85 PathProgramCache]: Analyzing trace with hash -713213793, now seen corresponding path program 1 times [2021-11-23 14:07:35,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:35,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237870170] [2021-11-23 14:07:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:35,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:07:36,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:36,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237870170] [2021-11-23 14:07:36,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237870170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:07:36,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:07:36,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:07:36,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242010869] [2021-11-23 14:07:36,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:07:36,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:07:36,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:07:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:36,097 INFO L87 Difference]: Start difference. First operand 57048 states and 86219 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:38,837 INFO L93 Difference]: Finished difference Result 114350 states and 172758 transitions. [2021-11-23 14:07:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:07:38,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-23 14:07:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:39,048 INFO L225 Difference]: With dead ends: 114350 [2021-11-23 14:07:39,048 INFO L226 Difference]: Without dead ends: 57336 [2021-11-23 14:07:39,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:07:39,157 INFO L933 BasicCegarLoop]: 5777 mSDtfsCounter, 36 mSDsluCounter, 5765 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11542 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:39,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 11542 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:07:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57336 states. [2021-11-23 14:07:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57336 to 57096. [2021-11-23 14:07:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57096 states, 55453 states have (on average 1.4783149694335744) internal successors, (81977), 55983 states have internal predecessors, (81977), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-23 14:07:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57096 states to 57096 states and 86267 transitions. [2021-11-23 14:07:41,702 INFO L78 Accepts]: Start accepts. Automaton has 57096 states and 86267 transitions. Word has length 132 [2021-11-23 14:07:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:07:41,703 INFO L470 AbstractCegarLoop]: Abstraction has 57096 states and 86267 transitions. [2021-11-23 14:07:41,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 57096 states and 86267 transitions. [2021-11-23 14:07:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 14:07:41,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:07:41,781 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:07:41,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 14:07:41,781 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:07:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:07:41,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1011170879, now seen corresponding path program 1 times [2021-11-23 14:07:41,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:07:41,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188876745] [2021-11-23 14:07:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:41,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:07:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 14:07:42,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:07:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188876745] [2021-11-23 14:07:42,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188876745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:07:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811493219] [2021-11-23 14:07:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:07:42,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:07:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:07:42,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:07:42,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3011a4f-5a4a-4c6e-a968-9125cd5935bf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:07:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:07:44,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 5954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:07:44,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:07:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 14:07:44,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:07:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 14:07:45,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811493219] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:07:45,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:07:45,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-23 14:07:45,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877995267] [2021-11-23 14:07:45,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:07:45,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:07:45,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:07:45,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:07:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:07:45,054 INFO L87 Difference]: Start difference. First operand 57096 states and 86267 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:07:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:07:47,653 INFO L93 Difference]: Finished difference Result 114734 states and 173214 transitions. [2021-11-23 14:07:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:07:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-23 14:07:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:07:47,849 INFO L225 Difference]: With dead ends: 114734 [2021-11-23 14:07:47,850 INFO L226 Difference]: Without dead ends: 57672 [2021-11-23 14:07:47,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:07:47,960 INFO L933 BasicCegarLoop]: 5777 mSDtfsCounter, 139 mSDsluCounter, 17277 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 23054 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:07:47,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 23054 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:07:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57672 states.