./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:03:57,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:03:57,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:03:57,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:03:57,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:03:57,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:03:57,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:03:57,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:03:57,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:03:57,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:03:57,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:03:57,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:03:57,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:03:57,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:03:57,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:03:57,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:03:57,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:03:57,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:03:57,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:03:57,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:03:57,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:03:57,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:03:57,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:03:57,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:03:57,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:03:57,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:03:57,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:03:57,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:03:57,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:03:57,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:03:57,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:03:57,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:03:57,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:03:57,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:03:57,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:03:57,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:03:57,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:03:57,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:03:57,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:03:57,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:03:57,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:03:57,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:03:57,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:03:57,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:03:57,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:03:57,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:03:57,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:03:57,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:03:57,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:03:57,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:03:57,723 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:03:57,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:03:57,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:03:57,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:03:57,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:03:57,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:03:57,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:03:57,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:03:57,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:03:57,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:03:57,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:03:57,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:03:57,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:03:57,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:03:57,727 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_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 [2021-12-06 19:03:57,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:03:57,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:03:57,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:03:57,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:03:57,926 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:03:57,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/systemc/transmitter.09.cil.c [2021-12-06 19:03:57,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/data/d43d448d9/fbda01dc4be54e6784be577d20ed8b77/FLAGe670064d6 [2021-12-06 19:03:58,363 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:03:58,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/sv-benchmarks/c/systemc/transmitter.09.cil.c [2021-12-06 19:03:58,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/data/d43d448d9/fbda01dc4be54e6784be577d20ed8b77/FLAGe670064d6 [2021-12-06 19:03:58,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/data/d43d448d9/fbda01dc4be54e6784be577d20ed8b77 [2021-12-06 19:03:58,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:03:58,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:03:58,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:03:58,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:03:58,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:03:58,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2f0e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58, skipping insertion in model container [2021-12-06 19:03:58,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:03:58,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:03:58,527 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_cffdf514-6839-40ca-bde8-b533d338d6a6/sv-benchmarks/c/systemc/transmitter.09.cil.c[706,719] [2021-12-06 19:03:58,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:03:58,610 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:03:58,618 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_cffdf514-6839-40ca-bde8-b533d338d6a6/sv-benchmarks/c/systemc/transmitter.09.cil.c[706,719] [2021-12-06 19:03:58,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:03:58,670 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:03:58,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58 WrapperNode [2021-12-06 19:03:58,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:03:58,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:03:58,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:03:58,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:03:58,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,728 INFO L137 Inliner]: procedures = 46, calls = 57, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 663 [2021-12-06 19:03:58,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:03:58,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:03:58,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:03:58,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:03:58,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:03:58,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:03:58,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:03:58,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:03:58,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (1/1) ... [2021-12-06 19:03:58,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:03:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:03:58,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:03:58,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdf514-6839-40ca-bde8-b533d338d6a6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:03:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 19:03:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 19:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 19:03:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 19:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 19:03:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 19:03:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 19:03:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 19:03:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 19:03:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 19:03:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:03:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 19:03:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 19:03:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:03:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:03:58,951 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:03:58,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:03:59,303 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:03:59,311 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:03:59,311 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-06 19:03:59,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:03:59 BoogieIcfgContainer [2021-12-06 19:03:59,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:03:59,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:03:59,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:03:59,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:03:59,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:03:58" (1/3) ... [2021-12-06 19:03:59,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e264c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:03:59, skipping insertion in model container [2021-12-06 19:03:59,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:58" (2/3) ... [2021-12-06 19:03:59,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e264c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:03:59, skipping insertion in model container [2021-12-06 19:03:59,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:03:59" (3/3) ... [2021-12-06 19:03:59,318 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.09.cil.c [2021-12-06 19:03:59,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:03:59,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:03:59,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:03:59,366 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:03:59,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:03:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 273 states have (on average 1.652014652014652) internal successors, (451), 275 states have internal predecessors, (451), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 19:03:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:03:59,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:03:59,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:03:59,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:03:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:03:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash 832159514, now seen corresponding path program 1 times [2021-12-06 19:03:59,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:03:59,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336537379] [2021-12-06 19:03:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:03:59,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:03:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:03:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:03:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:03:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:03:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:03:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:03:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:03:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:03:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:03:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:03:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:03:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:03:59,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:03:59,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336537379] [2021-12-06 19:03:59,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336537379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:03:59,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:03:59,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:03:59,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488123790] [2021-12-06 19:03:59,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:03:59,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:03:59,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:03:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:03:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:03:59,814 INFO L87 Difference]: Start difference. First operand has 303 states, 273 states have (on average 1.652014652014652) internal successors, (451), 275 states have internal predecessors, (451), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:00,672 INFO L93 Difference]: Finished difference Result 706 states and 1164 transitions. [2021-12-06 19:04:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:04:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:00,686 INFO L225 Difference]: With dead ends: 706 [2021-12-06 19:04:00,686 INFO L226 Difference]: Without dead ends: 405 [2021-12-06 19:04:00,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:00,694 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 795 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:00,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 845 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:04:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-06 19:04:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 298. [2021-12-06 19:04:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.553903345724907) internal successors, (418), 270 states have internal predecessors, (418), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 19:04:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 462 transitions. [2021-12-06 19:04:00,753 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 462 transitions. Word has length 151 [2021-12-06 19:04:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:00,754 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 462 transitions. [2021-12-06 19:04:00,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 462 transitions. [2021-12-06 19:04:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:00,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:00,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:00,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:04:00,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 493871964, now seen corresponding path program 1 times [2021-12-06 19:04:00,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963019123] [2021-12-06 19:04:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:00,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:00,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:00,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963019123] [2021-12-06 19:04:00,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963019123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:00,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:00,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:04:00,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665618008] [2021-12-06 19:04:00,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:00,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:04:00,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:04:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:04:00,898 INFO L87 Difference]: Start difference. First operand 298 states and 462 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:01,623 INFO L93 Difference]: Finished difference Result 689 states and 1084 transitions. [2021-12-06 19:04:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:04:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:01,627 INFO L225 Difference]: With dead ends: 689 [2021-12-06 19:04:01,627 INFO L226 Difference]: Without dead ends: 405 [2021-12-06 19:04:01,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:01,630 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 782 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:01,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 831 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:04:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-06 19:04:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 298. [2021-12-06 19:04:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.550185873605948) internal successors, (417), 270 states have internal predecessors, (417), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 19:04:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 461 transitions. [2021-12-06 19:04:01,656 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 461 transitions. Word has length 151 [2021-12-06 19:04:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:01,657 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 461 transitions. [2021-12-06 19:04:01,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 461 transitions. [2021-12-06 19:04:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:01,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:01,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:01,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:04:01,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash 75983262, now seen corresponding path program 1 times [2021-12-06 19:04:01,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:01,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704817810] [2021-12-06 19:04:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:01,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:01,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704817810] [2021-12-06 19:04:01,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704817810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:01,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:01,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:04:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502168905] [2021-12-06 19:04:01,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:04:01,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:04:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:04:01,810 INFO L87 Difference]: Start difference. First operand 298 states and 461 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:02,768 INFO L93 Difference]: Finished difference Result 685 states and 1078 transitions. [2021-12-06 19:04:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:04:02,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:02,773 INFO L225 Difference]: With dead ends: 685 [2021-12-06 19:04:02,773 INFO L226 Difference]: Without dead ends: 404 [2021-12-06 19:04:02,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:04:02,775 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 775 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:02,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 993 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:04:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-06 19:04:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 298. [2021-12-06 19:04:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.546468401486989) internal successors, (416), 270 states have internal predecessors, (416), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 19:04:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 460 transitions. [2021-12-06 19:04:02,805 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 460 transitions. Word has length 151 [2021-12-06 19:04:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:02,805 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 460 transitions. [2021-12-06 19:04:02,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 460 transitions. [2021-12-06 19:04:02,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:02,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:02,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:02,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:04:02,809 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:02,810 INFO L85 PathProgramCache]: Analyzing trace with hash 364802652, now seen corresponding path program 1 times [2021-12-06 19:04:02,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:02,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963010941] [2021-12-06 19:04:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:02,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:02,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:02,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963010941] [2021-12-06 19:04:02,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963010941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:02,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:02,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:04:02,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814761529] [2021-12-06 19:04:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:02,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:04:02,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:04:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:04:02,944 INFO L87 Difference]: Start difference. First operand 298 states and 460 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:03,792 INFO L93 Difference]: Finished difference Result 703 states and 1111 transitions. [2021-12-06 19:04:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:04:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:03,795 INFO L225 Difference]: With dead ends: 703 [2021-12-06 19:04:03,795 INFO L226 Difference]: Without dead ends: 422 [2021-12-06 19:04:03,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:04:03,798 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 970 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:03,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 1075 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:04:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-06 19:04:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 298. [2021-12-06 19:04:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.5427509293680297) internal successors, (415), 270 states have internal predecessors, (415), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 19:04:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 459 transitions. [2021-12-06 19:04:03,818 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 459 transitions. Word has length 151 [2021-12-06 19:04:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:03,818 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 459 transitions. [2021-12-06 19:04:03,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 459 transitions. [2021-12-06 19:04:03,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:03,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:03,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:03,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:04:03,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:03,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:03,821 INFO L85 PathProgramCache]: Analyzing trace with hash -180069922, now seen corresponding path program 1 times [2021-12-06 19:04:03,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:03,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118888361] [2021-12-06 19:04:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:03,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:03,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:03,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:03,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118888361] [2021-12-06 19:04:03,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118888361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:03,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:03,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:04:03,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010854870] [2021-12-06 19:04:03,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:03,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:04:03,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:04:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:04:03,918 INFO L87 Difference]: Start difference. First operand 298 states and 459 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:04,676 INFO L93 Difference]: Finished difference Result 683 states and 1072 transitions. [2021-12-06 19:04:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:04:04,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:04,680 INFO L225 Difference]: With dead ends: 683 [2021-12-06 19:04:04,680 INFO L226 Difference]: Without dead ends: 402 [2021-12-06 19:04:04,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:04:04,682 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 837 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:04,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 1189 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:04:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-06 19:04:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 298. [2021-12-06 19:04:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.5315985130111525) internal successors, (412), 270 states have internal predecessors, (412), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 19:04:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 456 transitions. [2021-12-06 19:04:04,702 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 456 transitions. Word has length 151 [2021-12-06 19:04:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:04,703 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 456 transitions. [2021-12-06 19:04:04,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 456 transitions. [2021-12-06 19:04:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:04,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:04,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:04,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:04:04,705 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1388576542, now seen corresponding path program 1 times [2021-12-06 19:04:04,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:04,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261025899] [2021-12-06 19:04:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:04,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:04,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:04,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261025899] [2021-12-06 19:04:04,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261025899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:04,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:04,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:04,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595995237] [2021-12-06 19:04:04,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:04,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:04,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:04,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:04,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:04,811 INFO L87 Difference]: Start difference. First operand 298 states and 456 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:06,532 INFO L93 Difference]: Finished difference Result 1098 states and 1723 transitions. [2021-12-06 19:04:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:04:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:06,537 INFO L225 Difference]: With dead ends: 1098 [2021-12-06 19:04:06,537 INFO L226 Difference]: Without dead ends: 817 [2021-12-06 19:04:06,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:04:06,539 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1274 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:06,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 2795 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 19:04:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-12-06 19:04:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 591. [2021-12-06 19:04:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 537 states have (on average 1.5437616387337059) internal successors, (829), 539 states have internal predecessors, (829), 40 states have call successors, (40), 12 states have call predecessors, (40), 13 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2021-12-06 19:04:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 912 transitions. [2021-12-06 19:04:06,593 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 912 transitions. Word has length 151 [2021-12-06 19:04:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:06,593 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 912 transitions. [2021-12-06 19:04:06,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 912 transitions. [2021-12-06 19:04:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:06,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:06,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:06,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:04:06,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash 440524576, now seen corresponding path program 1 times [2021-12-06 19:04:06,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:06,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189959628] [2021-12-06 19:04:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:06,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:06,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189959628] [2021-12-06 19:04:06,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189959628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:06,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:06,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:06,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022675415] [2021-12-06 19:04:06,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:06,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:06,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:06,710 INFO L87 Difference]: Start difference. First operand 591 states and 912 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:08,259 INFO L93 Difference]: Finished difference Result 2229 states and 3524 transitions. [2021-12-06 19:04:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:04:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:08,267 INFO L225 Difference]: With dead ends: 2229 [2021-12-06 19:04:08,267 INFO L226 Difference]: Without dead ends: 1655 [2021-12-06 19:04:08,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:04:08,270 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1510 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:08,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 2492 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:04:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-12-06 19:04:08,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1208. [2021-12-06 19:04:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1102 states have (on average 1.558983666061706) internal successors, (1718), 1108 states have internal predecessors, (1718), 76 states have call successors, (76), 24 states have call predecessors, (76), 29 states have return successors, (91), 79 states have call predecessors, (91), 76 states have call successors, (91) [2021-12-06 19:04:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1885 transitions. [2021-12-06 19:04:08,364 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1885 transitions. Word has length 151 [2021-12-06 19:04:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:08,364 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1885 transitions. [2021-12-06 19:04:08,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1885 transitions. [2021-12-06 19:04:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:08,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:08,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:08,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:04:08,369 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash -144247074, now seen corresponding path program 1 times [2021-12-06 19:04:08,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:08,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236768703] [2021-12-06 19:04:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:08,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:08,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236768703] [2021-12-06 19:04:08,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236768703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:08,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:08,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:04:08,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052534574] [2021-12-06 19:04:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:08,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:04:08,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:08,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:04:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:04:08,476 INFO L87 Difference]: Start difference. First operand 1208 states and 1885 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:09,244 INFO L93 Difference]: Finished difference Result 2938 states and 4681 transitions. [2021-12-06 19:04:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:04:09,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:09,252 INFO L225 Difference]: With dead ends: 2938 [2021-12-06 19:04:09,252 INFO L226 Difference]: Without dead ends: 1747 [2021-12-06 19:04:09,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:04:09,256 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 965 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:09,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 1051 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:04:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2021-12-06 19:04:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1208. [2021-12-06 19:04:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1102 states have (on average 1.5553539019963702) internal successors, (1714), 1108 states have internal predecessors, (1714), 76 states have call successors, (76), 24 states have call predecessors, (76), 29 states have return successors, (91), 79 states have call predecessors, (91), 76 states have call successors, (91) [2021-12-06 19:04:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1881 transitions. [2021-12-06 19:04:09,339 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1881 transitions. Word has length 151 [2021-12-06 19:04:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:09,340 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1881 transitions. [2021-12-06 19:04:09,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1881 transitions. [2021-12-06 19:04:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:09,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:09,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:09,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:04:09,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash -573905380, now seen corresponding path program 1 times [2021-12-06 19:04:09,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:09,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379791372] [2021-12-06 19:04:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:09,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:09,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379791372] [2021-12-06 19:04:09,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379791372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:09,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:09,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:04:09,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238728791] [2021-12-06 19:04:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:09,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:04:09,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:04:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:04:09,433 INFO L87 Difference]: Start difference. First operand 1208 states and 1881 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:10,289 INFO L93 Difference]: Finished difference Result 2929 states and 4651 transitions. [2021-12-06 19:04:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:04:10,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:10,297 INFO L225 Difference]: With dead ends: 2929 [2021-12-06 19:04:10,297 INFO L226 Difference]: Without dead ends: 1738 [2021-12-06 19:04:10,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:04:10,300 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 880 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:10,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 1175 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:04:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-12-06 19:04:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1208. [2021-12-06 19:04:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1102 states have (on average 1.5517241379310345) internal successors, (1710), 1108 states have internal predecessors, (1710), 76 states have call successors, (76), 24 states have call predecessors, (76), 29 states have return successors, (91), 79 states have call predecessors, (91), 76 states have call successors, (91) [2021-12-06 19:04:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1877 transitions. [2021-12-06 19:04:10,377 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1877 transitions. Word has length 151 [2021-12-06 19:04:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:10,377 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1877 transitions. [2021-12-06 19:04:10,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1877 transitions. [2021-12-06 19:04:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:10,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:10,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:10,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:04:10,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1280501986, now seen corresponding path program 1 times [2021-12-06 19:04:10,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:10,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286408590] [2021-12-06 19:04:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:10,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:10,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286408590] [2021-12-06 19:04:10,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286408590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:10,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:10,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:10,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949931614] [2021-12-06 19:04:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:10,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:10,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:10,489 INFO L87 Difference]: Start difference. First operand 1208 states and 1877 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:12,248 INFO L93 Difference]: Finished difference Result 4570 states and 7245 transitions. [2021-12-06 19:04:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:04:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:12,261 INFO L225 Difference]: With dead ends: 4570 [2021-12-06 19:04:12,261 INFO L226 Difference]: Without dead ends: 3379 [2021-12-06 19:04:12,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:04:12,264 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1251 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:12,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 2762 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:04:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2021-12-06 19:04:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 2502. [2021-12-06 19:04:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2286 states have (on average 1.5660542432195976) internal successors, (3580), 2306 states have internal predecessors, (3580), 148 states have call successors, (148), 48 states have call predecessors, (148), 67 states have return successors, (211), 155 states have call predecessors, (211), 148 states have call successors, (211) [2021-12-06 19:04:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3939 transitions. [2021-12-06 19:04:12,411 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3939 transitions. Word has length 151 [2021-12-06 19:04:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:12,412 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 3939 transitions. [2021-12-06 19:04:12,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3939 transitions. [2021-12-06 19:04:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:12,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:12,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:12,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:04:12,416 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:12,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:12,416 INFO L85 PathProgramCache]: Analyzing trace with hash -333464100, now seen corresponding path program 1 times [2021-12-06 19:04:12,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:12,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910898199] [2021-12-06 19:04:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:12,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:12,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910898199] [2021-12-06 19:04:12,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910898199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:12,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:12,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:12,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053905753] [2021-12-06 19:04:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:12,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:12,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:12,510 INFO L87 Difference]: Start difference. First operand 2502 states and 3939 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:14,227 INFO L93 Difference]: Finished difference Result 9507 states and 15273 transitions. [2021-12-06 19:04:14,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:04:14,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:14,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:14,256 INFO L225 Difference]: With dead ends: 9507 [2021-12-06 19:04:14,256 INFO L226 Difference]: Without dead ends: 7022 [2021-12-06 19:04:14,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:04:14,263 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 1488 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:14,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 2468 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:04:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2021-12-06 19:04:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 5279. [2021-12-06 19:04:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 4825 states have (on average 1.583419689119171) internal successors, (7640), 4891 states have internal predecessors, (7640), 292 states have call successors, (292), 96 states have call predecessors, (292), 161 states have return successors, (547), 307 states have call predecessors, (547), 292 states have call successors, (547) [2021-12-06 19:04:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 8479 transitions. [2021-12-06 19:04:14,562 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 8479 transitions. Word has length 151 [2021-12-06 19:04:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:14,562 INFO L470 AbstractCegarLoop]: Abstraction has 5279 states and 8479 transitions. [2021-12-06 19:04:14,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 8479 transitions. [2021-12-06 19:04:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:14,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:14,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:14,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:04:14,568 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash 528369502, now seen corresponding path program 1 times [2021-12-06 19:04:14,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:14,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354670202] [2021-12-06 19:04:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:14,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:14,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:14,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354670202] [2021-12-06 19:04:14,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354670202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:14,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:14,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:14,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841066188] [2021-12-06 19:04:14,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:14,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:14,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:14,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:14,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:14,667 INFO L87 Difference]: Start difference. First operand 5279 states and 8479 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:17,499 INFO L93 Difference]: Finished difference Result 22059 states and 36003 transitions. [2021-12-06 19:04:17,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:04:17,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:17,558 INFO L225 Difference]: With dead ends: 22059 [2021-12-06 19:04:17,558 INFO L226 Difference]: Without dead ends: 16797 [2021-12-06 19:04:17,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:04:17,572 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 1326 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:17,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 2880 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 19:04:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16797 states. [2021-12-06 19:04:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16797 to 11282. [2021-12-06 19:04:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11282 states, 10314 states have (on average 1.6063602869885591) internal successors, (16568), 10526 states have internal predecessors, (16568), 564 states have call successors, (564), 192 states have call predecessors, (564), 403 states have return successors, (1587), 595 states have call predecessors, (1587), 564 states have call successors, (1587) [2021-12-06 19:04:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11282 states to 11282 states and 18719 transitions. [2021-12-06 19:04:18,216 INFO L78 Accepts]: Start accepts. Automaton has 11282 states and 18719 transitions. Word has length 151 [2021-12-06 19:04:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:18,217 INFO L470 AbstractCegarLoop]: Abstraction has 11282 states and 18719 transitions. [2021-12-06 19:04:18,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11282 states and 18719 transitions. [2021-12-06 19:04:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:18,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:18,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:18,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:04:18,229 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:18,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1522039396, now seen corresponding path program 1 times [2021-12-06 19:04:18,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:18,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818175681] [2021-12-06 19:04:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:18,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:18,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818175681] [2021-12-06 19:04:18,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818175681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:18,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:18,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:18,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539117413] [2021-12-06 19:04:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:18,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:18,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:18,336 INFO L87 Difference]: Start difference. First operand 11282 states and 18719 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:21,992 INFO L93 Difference]: Finished difference Result 46413 states and 78455 transitions. [2021-12-06 19:04:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:04:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:22,088 INFO L225 Difference]: With dead ends: 46413 [2021-12-06 19:04:22,089 INFO L226 Difference]: Without dead ends: 35148 [2021-12-06 19:04:22,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:04:22,121 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 1530 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:22,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 2736 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 19:04:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35148 states. [2021-12-06 19:04:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35148 to 24633. [2021-12-06 19:04:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24633 states, 22491 states have (on average 1.629985327464319) internal successors, (36660), 23157 states have internal predecessors, (36660), 1092 states have call successors, (1092), 384 states have call predecessors, (1092), 1049 states have return successors, (5187), 1155 states have call predecessors, (5187), 1092 states have call successors, (5187) [2021-12-06 19:04:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24633 states to 24633 states and 42939 transitions. [2021-12-06 19:04:23,436 INFO L78 Accepts]: Start accepts. Automaton has 24633 states and 42939 transitions. Word has length 151 [2021-12-06 19:04:23,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:23,436 INFO L470 AbstractCegarLoop]: Abstraction has 24633 states and 42939 transitions. [2021-12-06 19:04:23,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 24633 states and 42939 transitions. [2021-12-06 19:04:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:23,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:23,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:23,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:04:23,451 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1033992290, now seen corresponding path program 1 times [2021-12-06 19:04:23,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:23,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543633783] [2021-12-06 19:04:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:23,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:23,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:23,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:23,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543633783] [2021-12-06 19:04:23,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543633783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:23,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:23,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:23,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496002686] [2021-12-06 19:04:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:23,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:23,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:23,541 INFO L87 Difference]: Start difference. First operand 24633 states and 42939 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:29,450 INFO L93 Difference]: Finished difference Result 99567 states and 178147 transitions. [2021-12-06 19:04:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:04:29,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:29,660 INFO L225 Difference]: With dead ends: 99567 [2021-12-06 19:04:29,661 INFO L226 Difference]: Without dead ends: 74951 [2021-12-06 19:04:29,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:04:29,730 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1800 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:29,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 2440 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 19:04:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74951 states. [2021-12-06 19:04:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74951 to 54884. [2021-12-06 19:04:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54884 states, 49940 states have (on average 1.6535843011613938) internal successors, (82580), 52000 states have internal predecessors, (82580), 2116 states have call successors, (2116), 768 states have call predecessors, (2116), 2827 states have return successors, (18499), 2243 states have call predecessors, (18499), 2116 states have call successors, (18499) [2021-12-06 19:04:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54884 states to 54884 states and 103195 transitions. [2021-12-06 19:04:32,954 INFO L78 Accepts]: Start accepts. Automaton has 54884 states and 103195 transitions. Word has length 151 [2021-12-06 19:04:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:32,954 INFO L470 AbstractCegarLoop]: Abstraction has 54884 states and 103195 transitions. [2021-12-06 19:04:32,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 54884 states and 103195 transitions. [2021-12-06 19:04:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:32,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:32,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:32,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:04:32,983 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2126627492, now seen corresponding path program 1 times [2021-12-06 19:04:32,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:32,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167047247] [2021-12-06 19:04:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:32,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:33,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:33,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167047247] [2021-12-06 19:04:33,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167047247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:33,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:33,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:04:33,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156439637] [2021-12-06 19:04:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:33,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:04:33,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:04:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:04:33,071 INFO L87 Difference]: Start difference. First operand 54884 states and 103195 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:37,340 INFO L93 Difference]: Finished difference Result 136089 states and 263842 transitions. [2021-12-06 19:04:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:04:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:37,585 INFO L225 Difference]: With dead ends: 136089 [2021-12-06 19:04:37,585 INFO L226 Difference]: Without dead ends: 81222 [2021-12-06 19:04:37,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:04:37,700 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 965 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:37,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 1022 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:04:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81222 states. [2021-12-06 19:04:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81222 to 54884. [2021-12-06 19:04:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54884 states, 49940 states have (on average 1.6510212254705647) internal successors, (82452), 52000 states have internal predecessors, (82452), 2116 states have call successors, (2116), 768 states have call predecessors, (2116), 2827 states have return successors, (18499), 2243 states have call predecessors, (18499), 2116 states have call successors, (18499) [2021-12-06 19:04:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54884 states to 54884 states and 103067 transitions. [2021-12-06 19:04:41,571 INFO L78 Accepts]: Start accepts. Automaton has 54884 states and 103067 transitions. Word has length 151 [2021-12-06 19:04:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:41,572 INFO L470 AbstractCegarLoop]: Abstraction has 54884 states and 103067 transitions. [2021-12-06 19:04:41,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 54884 states and 103067 transitions. [2021-12-06 19:04:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:04:41,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:41,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:41,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:04:41,597 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:04:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 325864090, now seen corresponding path program 1 times [2021-12-06 19:04:41,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:04:41,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966483540] [2021-12-06 19:04:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:04:41,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:04:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:04:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:04:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:04:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:04:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:04:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:04:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:41,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:04:41,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966483540] [2021-12-06 19:04:41,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966483540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:04:41,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:04:41,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:04:41,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690291242] [2021-12-06 19:04:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:04:41,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:04:41,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:04:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:04:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:04:41,684 INFO L87 Difference]: Start difference. First operand 54884 states and 103067 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:04:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:51,956 INFO L93 Difference]: Finished difference Result 209535 states and 411563 transitions. [2021-12-06 19:04:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:04:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:04:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:52,424 INFO L225 Difference]: With dead ends: 209535 [2021-12-06 19:04:52,424 INFO L226 Difference]: Without dead ends: 154668 [2021-12-06 19:04:52,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:04:52,541 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 1606 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:52,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 1554 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 19:04:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154668 states. [2021-12-06 19:04:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154668 to 120297. [2021-12-06 19:04:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120297 states, 108355 states have (on average 1.659397351298971) internal successors, (179804), 114661 states have internal predecessors, (179804), 4100 states have call successors, (4100), 1536 states have call predecessors, (4100), 7841 states have return successors, (69635), 4355 states have call predecessors, (69635), 4100 states have call successors, (69635) [2021-12-06 19:05:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120297 states to 120297 states and 253539 transitions. [2021-12-06 19:05:00,019 INFO L78 Accepts]: Start accepts. Automaton has 120297 states and 253539 transitions. Word has length 151 [2021-12-06 19:05:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:05:00,019 INFO L470 AbstractCegarLoop]: Abstraction has 120297 states and 253539 transitions. [2021-12-06 19:05:00,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:05:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 120297 states and 253539 transitions. [2021-12-06 19:05:00,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:05:00,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:05:00,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:05:00,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:05:00,064 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:05:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:05:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1396138596, now seen corresponding path program 1 times [2021-12-06 19:05:00,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:05:00,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147277656] [2021-12-06 19:05:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:05:00,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:05:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:05:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:05:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:05:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:05:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:00,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:05:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:05:00,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:05:00,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147277656] [2021-12-06 19:05:00,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147277656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:05:00,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:05:00,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:05:00,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805030276] [2021-12-06 19:05:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:05:00,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:05:00,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:05:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:05:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:05:00,145 INFO L87 Difference]: Start difference. First operand 120297 states and 253539 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:05:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:05:09,360 INFO L93 Difference]: Finished difference Result 293253 states and 647700 transitions. [2021-12-06 19:05:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:05:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:05:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:05:09,942 INFO L225 Difference]: With dead ends: 293253 [2021-12-06 19:05:09,942 INFO L226 Difference]: Without dead ends: 172973 [2021-12-06 19:05:10,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:05:10,200 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 835 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:05:10,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1170 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:05:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172973 states. [2021-12-06 19:05:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172973 to 120297. [2021-12-06 19:05:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120297 states, 108355 states have (on average 1.6570347468967745) internal successors, (179548), 114661 states have internal predecessors, (179548), 4100 states have call successors, (4100), 1536 states have call predecessors, (4100), 7841 states have return successors, (69635), 4355 states have call predecessors, (69635), 4100 states have call successors, (69635) [2021-12-06 19:05:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120297 states to 120297 states and 253283 transitions. [2021-12-06 19:05:20,566 INFO L78 Accepts]: Start accepts. Automaton has 120297 states and 253283 transitions. Word has length 151 [2021-12-06 19:05:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:05:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 120297 states and 253283 transitions. [2021-12-06 19:05:20,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:05:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 120297 states and 253283 transitions. [2021-12-06 19:05:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:05:20,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:05:20,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:05:20,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:05:20,614 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:05:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:05:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1728781734, now seen corresponding path program 1 times [2021-12-06 19:05:20,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:05:20,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496932574] [2021-12-06 19:05:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:05:20,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:05:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:05:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:05:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:05:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:05:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:05:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:05:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:05:20,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:05:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496932574] [2021-12-06 19:05:20,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496932574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:05:20,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:05:20,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:05:20,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16728735] [2021-12-06 19:05:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:05:20,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:05:20,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:05:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:05:20,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:05:20,692 INFO L87 Difference]: Start difference. First operand 120297 states and 253283 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:05:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:05:40,110 INFO L93 Difference]: Finished difference Result 440826 states and 1006681 transitions. [2021-12-06 19:05:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:05:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:05:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:05:41,784 INFO L225 Difference]: With dead ends: 440826 [2021-12-06 19:05:41,784 INFO L226 Difference]: Without dead ends: 320546 [2021-12-06 19:05:42,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:05:42,254 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 1223 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:05:42,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 2734 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 19:05:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320546 states. [2021-12-06 19:06:01,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320546 to 259487. [2021-12-06 19:06:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259487 states, 229303 states have (on average 1.6484127987858859) internal successors, (377986), 248475 states have internal predecessors, (377986), 7940 states have call successors, (7940), 3072 states have call predecessors, (7940), 22243 states have return successors, (270083), 8451 states have call predecessors, (270083), 7940 states have call successors, (270083) [2021-12-06 19:06:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259487 states to 259487 states and 656009 transitions. [2021-12-06 19:06:03,153 INFO L78 Accepts]: Start accepts. Automaton has 259487 states and 656009 transitions. Word has length 151 [2021-12-06 19:06:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:06:03,153 INFO L470 AbstractCegarLoop]: Abstraction has 259487 states and 656009 transitions. [2021-12-06 19:06:03,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:06:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 259487 states and 656009 transitions. [2021-12-06 19:06:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:06:03,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:06:03,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:06:03,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:06:03,272 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:06:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:06:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash 200150492, now seen corresponding path program 1 times [2021-12-06 19:06:03,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:06:03,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751732617] [2021-12-06 19:06:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:06:03,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:06:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:06:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:06:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:06:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:06:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:06:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:06:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:06:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:06:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:06:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:06:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:06:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:06:03,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:06:03,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751732617] [2021-12-06 19:06:03,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751732617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:06:03,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:06:03,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:06:03,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412711420] [2021-12-06 19:06:03,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:06:03,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:06:03,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:06:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:06:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:06:03,347 INFO L87 Difference]: Start difference. First operand 259487 states and 656009 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:06:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:06:23,489 INFO L93 Difference]: Finished difference Result 611187 states and 1677406 transitions. [2021-12-06 19:06:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:06:23,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:06:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:06:25,212 INFO L225 Difference]: With dead ends: 611187 [2021-12-06 19:06:25,212 INFO L226 Difference]: Without dead ends: 351717 [2021-12-06 19:06:25,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:06:25,834 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 963 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:06:25,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 1009 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:06:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351717 states. [2021-12-06 19:07:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351717 to 259487. [2021-12-06 19:07:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259487 states, 229303 states have (on average 1.646179945312534) internal successors, (377474), 248475 states have internal predecessors, (377474), 7940 states have call successors, (7940), 3072 states have call predecessors, (7940), 22243 states have return successors, (270083), 8451 states have call predecessors, (270083), 7940 states have call successors, (270083) [2021-12-06 19:07:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259487 states to 259487 states and 655497 transitions. [2021-12-06 19:07:03,276 INFO L78 Accepts]: Start accepts. Automaton has 259487 states and 655497 transitions. Word has length 151 [2021-12-06 19:07:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:07:03,277 INFO L470 AbstractCegarLoop]: Abstraction has 259487 states and 655497 transitions. [2021-12-06 19:07:03,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:07:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 259487 states and 655497 transitions. [2021-12-06 19:07:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:07:03,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:07:03,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:07:03,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:07:03,371 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:07:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:07:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2092930534, now seen corresponding path program 1 times [2021-12-06 19:07:03,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:07:03,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200766686] [2021-12-06 19:07:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:07:03,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:07:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:07:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:07:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:07:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:07:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:07:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:07:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:07:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:07:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:07:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:07:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:07:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:07:03,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:07:03,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200766686] [2021-12-06 19:07:03,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200766686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:07:03,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:07:03,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:07:03,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560065054] [2021-12-06 19:07:03,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:07:03,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:07:03,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:07:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:07:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:07:03,446 INFO L87 Difference]: Start difference. First operand 259487 states and 655497 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:07:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:07:32,352 INFO L93 Difference]: Finished difference Result 746661 states and 1794913 transitions. [2021-12-06 19:07:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:07:32,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:07:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:07:34,408 INFO L225 Difference]: With dead ends: 746661 [2021-12-06 19:07:34,409 INFO L226 Difference]: Without dead ends: 487192 [2021-12-06 19:07:35,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:07:35,188 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1464 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:07:35,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1500 Valid, 1913 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 19:07:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487192 states. [2021-12-06 19:08:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487192 to 366450. [2021-12-06 19:08:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366450 states, 324329 states have (on average 1.6364771574543133) internal successors, (530757), 350062 states have internal predecessors, (530757), 12036 states have call successors, (12036), 4608 states have call predecessors, (12036), 30084 states have return successors, (339459), 12291 states have call predecessors, (339459), 12036 states have call successors, (339459) [2021-12-06 19:08:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366450 states to 366450 states and 882252 transitions. [2021-12-06 19:08:06,603 INFO L78 Accepts]: Start accepts. Automaton has 366450 states and 882252 transitions. Word has length 151 [2021-12-06 19:08:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:08:06,603 INFO L470 AbstractCegarLoop]: Abstraction has 366450 states and 882252 transitions. [2021-12-06 19:08:06,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:08:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 366450 states and 882252 transitions. [2021-12-06 19:08:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:08:06,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:08:06,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:08:06,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:08:06,694 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:08:06,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:08:06,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1237429211, now seen corresponding path program 1 times [2021-12-06 19:08:06,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:08:06,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864881702] [2021-12-06 19:08:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:08:06,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:08:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:08:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:08:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:08:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:08:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:08:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:08:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:08:06,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:08:06,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864881702] [2021-12-06 19:08:06,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864881702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:08:06,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:08:06,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:08:06,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430024750] [2021-12-06 19:08:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:08:06,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:08:06,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:08:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:08:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:08:06,793 INFO L87 Difference]: Start difference. First operand 366450 states and 882252 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:08:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:08:46,652 INFO L93 Difference]: Finished difference Result 855698 states and 1958207 transitions. [2021-12-06 19:08:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:08:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:08:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:08:48,871 INFO L225 Difference]: With dead ends: 855698 [2021-12-06 19:08:48,871 INFO L226 Difference]: Without dead ends: 489266 [2021-12-06 19:08:49,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:08:49,788 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 914 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:08:49,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 1598 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:08:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489266 states. [2021-12-06 19:09:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489266 to 367218. [2021-12-06 19:09:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367218 states, 325097 states have (on average 1.6333986471729975) internal successors, (531013), 350830 states have internal predecessors, (531013), 12036 states have call successors, (12036), 4608 states have call predecessors, (12036), 30084 states have return successors, (339459), 12291 states have call predecessors, (339459), 12036 states have call successors, (339459) [2021-12-06 19:09:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367218 states to 367218 states and 882508 transitions. [2021-12-06 19:09:20,238 INFO L78 Accepts]: Start accepts. Automaton has 367218 states and 882508 transitions. Word has length 151 [2021-12-06 19:09:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:20,238 INFO L470 AbstractCegarLoop]: Abstraction has 367218 states and 882508 transitions. [2021-12-06 19:09:20,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:09:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 367218 states and 882508 transitions. [2021-12-06 19:09:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:09:20,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:20,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:20,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:09:20,353 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1355870685, now seen corresponding path program 1 times [2021-12-06 19:09:20,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941717410] [2021-12-06 19:09:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:20,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:09:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:09:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:09:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:09:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:20,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941717410] [2021-12-06 19:09:20,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941717410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:20,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:20,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:20,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257422974] [2021-12-06 19:09:20,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:20,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:20,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:20,483 INFO L87 Difference]: Start difference. First operand 367218 states and 882508 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:10:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:21,601 INFO L93 Difference]: Finished difference Result 939666 states and 2078018 transitions. [2021-12-06 19:10:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:10:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:10:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:23,851 INFO L225 Difference]: With dead ends: 939666 [2021-12-06 19:10:23,851 INFO L226 Difference]: Without dead ends: 572466 [2021-12-06 19:10:24,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:10:24,794 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 914 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:24,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 1590 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:10:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572466 states. [2021-12-06 19:10:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572466 to 369522. [2021-12-06 19:10:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369522 states, 327401 states have (on average 1.6289412677420045) internal successors, (533317), 353134 states have internal predecessors, (533317), 12036 states have call successors, (12036), 4608 states have call predecessors, (12036), 30084 states have return successors, (339459), 12291 states have call predecessors, (339459), 12036 states have call successors, (339459) [2021-12-06 19:10:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369522 states to 369522 states and 884812 transitions. [2021-12-06 19:10:57,481 INFO L78 Accepts]: Start accepts. Automaton has 369522 states and 884812 transitions. Word has length 151 [2021-12-06 19:10:57,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:10:57,482 INFO L470 AbstractCegarLoop]: Abstraction has 369522 states and 884812 transitions. [2021-12-06 19:10:57,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:10:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 369522 states and 884812 transitions. [2021-12-06 19:10:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:10:57,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:10:57,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:10:57,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:10:57,574 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:10:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:10:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1908055713, now seen corresponding path program 1 times [2021-12-06 19:10:57,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:10:57,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018984397] [2021-12-06 19:10:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:10:57,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:10:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:10:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:10:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:10:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:10:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:10:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:10:57,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:10:57,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018984397] [2021-12-06 19:10:57,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018984397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:10:57,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:10:57,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:10:57,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139021488] [2021-12-06 19:10:57,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:10:57,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:10:57,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:10:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:10:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:10:57,677 INFO L87 Difference]: Start difference. First operand 369522 states and 884812 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:12:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:16,430 INFO L93 Difference]: Finished difference Result 1389002 states and 3174324 transitions. [2021-12-06 19:12:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:12:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2021-12-06 19:12:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:20,988 INFO L225 Difference]: With dead ends: 1389002 [2021-12-06 19:12:20,988 INFO L226 Difference]: Without dead ends: 1019498 [2021-12-06 19:12:22,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:12:22,352 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 2955 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:22,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2998 Valid, 2203 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 19:12:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019498 states. [2021-12-06 19:13:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019498 to 840993. [2021-12-06 19:13:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840993 states, 745459 states have (on average 1.6275019820003516) internal successors, (1213236), 803485 states have internal predecessors, (1213236), 27524 states have call successors, (27524), 10752 states have call predecessors, (27524), 68009 states have return successors, (754179), 27267 states have call predecessors, (754179), 27524 states have call successors, (754179) [2021-12-06 19:13:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840993 states to 840993 states and 1994939 transitions. [2021-12-06 19:13:37,612 INFO L78 Accepts]: Start accepts. Automaton has 840993 states and 1994939 transitions. Word has length 151 [2021-12-06 19:13:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:13:37,612 INFO L470 AbstractCegarLoop]: Abstraction has 840993 states and 1994939 transitions. [2021-12-06 19:13:37,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:13:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 840993 states and 1994939 transitions. [2021-12-06 19:13:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 19:13:37,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:13:37,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:13:37,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:13:37,734 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:13:37,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:13:37,735 INFO L85 PathProgramCache]: Analyzing trace with hash 525499552, now seen corresponding path program 1 times [2021-12-06 19:13:37,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:13:37,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779200948] [2021-12-06 19:13:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:13:37,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:13:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:13:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:13:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 19:13:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:37,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:13:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:13:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:13:37,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:13:37,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779200948] [2021-12-06 19:13:37,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779200948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:13:37,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:13:37,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:13:37,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247593637] [2021-12-06 19:13:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:13:37,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:13:37,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:13:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:13:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:13:37,833 INFO L87 Difference]: Start difference. First operand 840993 states and 1994939 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)