./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:14:22,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:14:22,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:14:22,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:14:22,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:14:22,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:14:22,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:14:22,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:14:22,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:14:22,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:14:22,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:14:22,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:14:22,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:14:22,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:14:22,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:14:22,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:14:22,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:14:22,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:14:22,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:14:22,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:14:22,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:14:22,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:14:22,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:14:22,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:14:22,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:14:22,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:14:22,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:14:22,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:14:22,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:14:22,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:14:22,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:14:22,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:14:22,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:14:22,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:14:22,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:14:22,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:14:22,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:14:22,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:14:22,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:14:22,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:14:22,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:14:22,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:14:22,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:14:22,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:14:22,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:14:22,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:14:22,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:14:22,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:14:22,206 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:14:22,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:14:22,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:14:22,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:14:22,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:14:22,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:14:22,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:14:22,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:14:22,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:14:22,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:14:22,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:14:22,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:14:22,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:14:22,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:14:22,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:14:22,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:14:22,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:14:22,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:14:22,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:14:22,209 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:14:22,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:14:22,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:14:22,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:14:22,210 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2021-11-06 18:14:22,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:14:22,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:14:22,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:14:22,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:14:22,412 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:14:22,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-06 18:14:22,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76793198/a8d7d42925644138befc9e1cf82cbe82/FLAGc389ba44c [2021-11-06 18:14:23,101 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:14:23,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-06 18:14:23,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76793198/a8d7d42925644138befc9e1cf82cbe82/FLAGc389ba44c [2021-11-06 18:14:23,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76793198/a8d7d42925644138befc9e1cf82cbe82 [2021-11-06 18:14:23,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:14:23,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:14:23,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:14:23,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:14:23,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:14:23,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:14:23" (1/1) ... [2021-11-06 18:14:23,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349e8a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:23, skipping insertion in model container [2021-11-06 18:14:23,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:14:23" (1/1) ... [2021-11-06 18:14:23,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:14:23,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:14:25,648 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-06 18:14:25,652 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-06 18:14:25,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:14:25,715 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:14:25,982 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2021-11-06 18:14:25,982 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2021-11-06 18:14:25,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:14:26,075 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:14:26,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26 WrapperNode [2021-11-06 18:14:26,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:14:26,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:14:26,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:14:26,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:14:26,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:26,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:26,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:14:26,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:14:26,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:14:26,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:14:26,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:26,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:26,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:26,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:27,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:27,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:27,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:27,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:14:27,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:14:27,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:14:27,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:14:27,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (1/1) ... [2021-11-06 18:14:27,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:14:27,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:14:27,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:14:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:14:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:14:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:14:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:14:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:14:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:14:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:14:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:14:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:14:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:19:01,946 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:19:01,947 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:19:01,947 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:19:01,948 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:19:01,949 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:19:01,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:19:01,974 INFO L299 CfgBuilder]: Removed 5622 assume(true) statements. [2021-11-06 18:19:01,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:01 BoogieIcfgContainer [2021-11-06 18:19:01,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:19:01,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:19:01,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:19:01,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:19:01,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:14:23" (1/3) ... [2021-11-06 18:19:01,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a04df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:19:01, skipping insertion in model container [2021-11-06 18:19:01,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:26" (2/3) ... [2021-11-06 18:19:01,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a04df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:19:01, skipping insertion in model container [2021-11-06 18:19:01,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:19:01" (3/3) ... [2021-11-06 18:19:01,986 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-06 18:19:01,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:19:01,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-06 18:19:02,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:19:02,040 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:19:02,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-06 18:19:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 5242 states, 5228 states have (on average 1.3414307574598316) internal successors, (7013), 5241 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 18:19:02,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:02,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:02,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1610179768, now seen corresponding path program 1 times [2021-11-06 18:19:02,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:02,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45489791] [2021-11-06 18:19:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:02,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:02,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:02,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45489791] [2021-11-06 18:19:02,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45489791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:02,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:02,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:02,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510999269] [2021-11-06 18:19:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:02,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:02,978 INFO L87 Difference]: Start difference. First operand has 5242 states, 5228 states have (on average 1.3414307574598316) internal successors, (7013), 5241 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:05,570 INFO L93 Difference]: Finished difference Result 13267 states and 17767 transitions. [2021-11-06 18:19:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 18:19:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:05,603 INFO L225 Difference]: With dead ends: 13267 [2021-11-06 18:19:05,603 INFO L226 Difference]: Without dead ends: 7806 [2021-11-06 18:19:05,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7806 states. [2021-11-06 18:19:05,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7806 to 7195. [2021-11-06 18:19:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 7181 states have (on average 1.30218632502437) internal successors, (9351), 7194 states have internal predecessors, (9351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 9351 transitions. [2021-11-06 18:19:05,829 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 9351 transitions. Word has length 42 [2021-11-06 18:19:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:05,830 INFO L470 AbstractCegarLoop]: Abstraction has 7195 states and 9351 transitions. [2021-11-06 18:19:05,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 9351 transitions. [2021-11-06 18:19:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 18:19:05,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:05,833 INFO L513 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] [2021-11-06 18:19:05,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:19:05,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1855051487, now seen corresponding path program 1 times [2021-11-06 18:19:05,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:05,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572325140] [2021-11-06 18:19:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:05,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:06,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:06,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572325140] [2021-11-06 18:19:06,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572325140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:06,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:06,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:06,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431229504] [2021-11-06 18:19:06,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:06,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:06,234 INFO L87 Difference]: Start difference. First operand 7195 states and 9351 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:08,766 INFO L93 Difference]: Finished difference Result 16256 states and 21112 transitions. [2021-11-06 18:19:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:08,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-06 18:19:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:08,794 INFO L225 Difference]: With dead ends: 16256 [2021-11-06 18:19:08,795 INFO L226 Difference]: Without dead ends: 9105 [2021-11-06 18:19:08,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2021-11-06 18:19:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 9089. [2021-11-06 18:19:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9089 states, 9075 states have (on average 1.296749311294766) internal successors, (11768), 9088 states have internal predecessors, (11768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 11768 transitions. [2021-11-06 18:19:08,994 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 11768 transitions. Word has length 47 [2021-11-06 18:19:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:08,995 INFO L470 AbstractCegarLoop]: Abstraction has 9089 states and 11768 transitions. [2021-11-06 18:19:08,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 11768 transitions. [2021-11-06 18:19:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 18:19:09,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:09,002 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:09,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:19:09,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash -232223923, now seen corresponding path program 1 times [2021-11-06 18:19:09,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:09,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337906095] [2021-11-06 18:19:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:09,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:09,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:09,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337906095] [2021-11-06 18:19:09,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337906095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:09,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:09,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:09,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353445497] [2021-11-06 18:19:09,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:09,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:09,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:09,381 INFO L87 Difference]: Start difference. First operand 9089 states and 11768 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:11,935 INFO L93 Difference]: Finished difference Result 20044 states and 25946 transitions. [2021-11-06 18:19:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 18:19:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:11,968 INFO L225 Difference]: With dead ends: 20044 [2021-11-06 18:19:11,969 INFO L226 Difference]: Without dead ends: 10999 [2021-11-06 18:19:11,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2021-11-06 18:19:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10983. [2021-11-06 18:19:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10983 states, 10969 states have (on average 1.2933722308323456) internal successors, (14187), 10982 states have internal predecessors, (14187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 14187 transitions. [2021-11-06 18:19:12,179 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 14187 transitions. Word has length 78 [2021-11-06 18:19:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:12,180 INFO L470 AbstractCegarLoop]: Abstraction has 10983 states and 14187 transitions. [2021-11-06 18:19:12,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 14187 transitions. [2021-11-06 18:19:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 18:19:12,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:12,185 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:12,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:19:12,186 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:12,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash 585100769, now seen corresponding path program 1 times [2021-11-06 18:19:12,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:12,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187864244] [2021-11-06 18:19:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:12,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:19:12,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:12,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187864244] [2021-11-06 18:19:12,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187864244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:12,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:12,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:12,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98043536] [2021-11-06 18:19:12,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:12,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:12,524 INFO L87 Difference]: Start difference. First operand 10983 states and 14187 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:15,282 INFO L93 Difference]: Finished difference Result 23822 states and 30764 transitions. [2021-11-06 18:19:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-06 18:19:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:15,322 INFO L225 Difference]: With dead ends: 23822 [2021-11-06 18:19:15,322 INFO L226 Difference]: Without dead ends: 12883 [2021-11-06 18:19:15,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12883 states. [2021-11-06 18:19:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12883 to 12867. [2021-11-06 18:19:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2909048471174045) internal successors, (16592), 12866 states have internal predecessors, (16592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16592 transitions. [2021-11-06 18:19:15,597 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16592 transitions. Word has length 115 [2021-11-06 18:19:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:15,597 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16592 transitions. [2021-11-06 18:19:15,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16592 transitions. [2021-11-06 18:19:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 18:19:15,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:15,606 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:15,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:19:15,606 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1971304163, now seen corresponding path program 1 times [2021-11-06 18:19:15,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:15,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75925018] [2021-11-06 18:19:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:15,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:16,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:16,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75925018] [2021-11-06 18:19:16,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75925018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:16,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:16,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:19:16,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525259020] [2021-11-06 18:19:16,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:16,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:16,037 INFO L87 Difference]: Start difference. First operand 12867 states and 16592 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:16,248 INFO L93 Difference]: Finished difference Result 25690 states and 33135 transitions. [2021-11-06 18:19:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-06 18:19:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:16,274 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:16,275 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:16,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2881039446043725) internal successors, (16556), 12866 states have internal predecessors, (16556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16556 transitions. [2021-11-06 18:19:16,539 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16556 transitions. Word has length 115 [2021-11-06 18:19:16,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:16,540 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16556 transitions. [2021-11-06 18:19:16,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16556 transitions. [2021-11-06 18:19:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 18:19:16,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:16,545 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:16,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:19:16,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:16,549 INFO L85 PathProgramCache]: Analyzing trace with hash 980688957, now seen corresponding path program 1 times [2021-11-06 18:19:16,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:16,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465924728] [2021-11-06 18:19:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:16,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:16,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:16,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465924728] [2021-11-06 18:19:16,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465924728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:16,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:16,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:16,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390635650] [2021-11-06 18:19:16,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:16,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:16,909 INFO L87 Difference]: Start difference. First operand 12867 states and 16556 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:17,351 INFO L93 Difference]: Finished difference Result 25690 states and 33063 transitions. [2021-11-06 18:19:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-06 18:19:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:17,381 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:17,382 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:17,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2853030420913405) internal successors, (16520), 12866 states have internal predecessors, (16520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16520 transitions. [2021-11-06 18:19:17,894 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16520 transitions. Word has length 116 [2021-11-06 18:19:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16520 transitions. [2021-11-06 18:19:17,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16520 transitions. [2021-11-06 18:19:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 18:19:17,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:17,899 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:17,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:19:17,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash 336537598, now seen corresponding path program 1 times [2021-11-06 18:19:17,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:17,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783829509] [2021-11-06 18:19:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:17,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:18,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:18,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783829509] [2021-11-06 18:19:18,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783829509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:18,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:18,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:18,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335550500] [2021-11-06 18:19:18,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:18,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:18,266 INFO L87 Difference]: Start difference. First operand 12867 states and 16520 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:18,713 INFO L93 Difference]: Finished difference Result 25690 states and 32991 transitions. [2021-11-06 18:19:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:18,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-06 18:19:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:18,741 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:18,742 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:18,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2825021395783085) internal successors, (16484), 12866 states have internal predecessors, (16484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16484 transitions. [2021-11-06 18:19:19,054 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16484 transitions. Word has length 117 [2021-11-06 18:19:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:19,054 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16484 transitions. [2021-11-06 18:19:19,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16484 transitions. [2021-11-06 18:19:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 18:19:19,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:19,059 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:19,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:19:19,059 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1842830904, now seen corresponding path program 1 times [2021-11-06 18:19:19,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:19,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117679459] [2021-11-06 18:19:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:19,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:19,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:19,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117679459] [2021-11-06 18:19:19,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117679459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:19,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:19,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:19,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848091401] [2021-11-06 18:19:19,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:19,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:19,374 INFO L87 Difference]: Start difference. First operand 12867 states and 16484 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:19,980 INFO L93 Difference]: Finished difference Result 25690 states and 32919 transitions. [2021-11-06 18:19:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:19,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 18:19:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:20,008 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:20,008 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:20,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2797012370652765) internal successors, (16448), 12866 states have internal predecessors, (16448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16448 transitions. [2021-11-06 18:19:20,345 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16448 transitions. Word has length 118 [2021-11-06 18:19:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:20,345 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16448 transitions. [2021-11-06 18:19:20,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16448 transitions. [2021-11-06 18:19:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 18:19:20,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:20,351 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:20,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:19:20,351 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1293432089, now seen corresponding path program 1 times [2021-11-06 18:19:20,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:20,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389468957] [2021-11-06 18:19:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:20,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:20,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:20,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389468957] [2021-11-06 18:19:20,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389468957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:20,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:20,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:20,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061513028] [2021-11-06 18:19:20,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:20,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:20,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:20,650 INFO L87 Difference]: Start difference. First operand 12867 states and 16448 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:21,155 INFO L93 Difference]: Finished difference Result 25690 states and 32847 transitions. [2021-11-06 18:19:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-06 18:19:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:21,185 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:21,186 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:21,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2769003345522447) internal successors, (16412), 12866 states have internal predecessors, (16412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16412 transitions. [2021-11-06 18:19:21,736 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16412 transitions. Word has length 119 [2021-11-06 18:19:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:21,737 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16412 transitions. [2021-11-06 18:19:21,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16412 transitions. [2021-11-06 18:19:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-06 18:19:21,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:21,742 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:21,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:19:21,743 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1442086963, now seen corresponding path program 1 times [2021-11-06 18:19:21,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:21,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651669253] [2021-11-06 18:19:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:21,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:22,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:22,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651669253] [2021-11-06 18:19:22,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651669253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:22,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:22,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:22,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932081085] [2021-11-06 18:19:22,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:22,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:22,043 INFO L87 Difference]: Start difference. First operand 12867 states and 16412 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:22,583 INFO L93 Difference]: Finished difference Result 25690 states and 32775 transitions. [2021-11-06 18:19:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-06 18:19:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:22,616 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:22,616 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:22,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2740994320392127) internal successors, (16376), 12866 states have internal predecessors, (16376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16376 transitions. [2021-11-06 18:19:23,010 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16376 transitions. Word has length 120 [2021-11-06 18:19:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:23,010 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16376 transitions. [2021-11-06 18:19:23,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16376 transitions. [2021-11-06 18:19:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 18:19:23,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:23,015 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:23,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:19:23,016 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1755569716, now seen corresponding path program 1 times [2021-11-06 18:19:23,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:23,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292274734] [2021-11-06 18:19:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:23,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:23,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:23,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292274734] [2021-11-06 18:19:23,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292274734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:23,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:23,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:23,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65744582] [2021-11-06 18:19:23,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:23,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:23,332 INFO L87 Difference]: Start difference. First operand 12867 states and 16376 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:24,027 INFO L93 Difference]: Finished difference Result 25690 states and 32703 transitions. [2021-11-06 18:19:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-06 18:19:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:24,059 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:24,060 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:24,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2712985295261807) internal successors, (16340), 12866 states have internal predecessors, (16340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16340 transitions. [2021-11-06 18:19:24,503 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16340 transitions. Word has length 121 [2021-11-06 18:19:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:24,503 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16340 transitions. [2021-11-06 18:19:24,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16340 transitions. [2021-11-06 18:19:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 18:19:24,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:24,508 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:24,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:19:24,508 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1411217874, now seen corresponding path program 1 times [2021-11-06 18:19:24,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:24,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300392606] [2021-11-06 18:19:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:24,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:24,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:24,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300392606] [2021-11-06 18:19:24,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300392606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:24,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:24,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:24,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055353648] [2021-11-06 18:19:24,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:24,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:24,821 INFO L87 Difference]: Start difference. First operand 12867 states and 16340 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:25,564 INFO L93 Difference]: Finished difference Result 25690 states and 32631 transitions. [2021-11-06 18:19:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-06 18:19:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:25,584 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:25,585 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:25,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2684976270131487) internal successors, (16304), 12866 states have internal predecessors, (16304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16304 transitions. [2021-11-06 18:19:26,026 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16304 transitions. Word has length 122 [2021-11-06 18:19:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:26,026 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16304 transitions. [2021-11-06 18:19:26,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16304 transitions. [2021-11-06 18:19:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 18:19:26,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:26,030 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:26,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:19:26,031 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -797236401, now seen corresponding path program 1 times [2021-11-06 18:19:26,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:26,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373972030] [2021-11-06 18:19:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:26,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:26,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:26,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373972030] [2021-11-06 18:19:26,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373972030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:26,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:26,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:26,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938673485] [2021-11-06 18:19:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:26,321 INFO L87 Difference]: Start difference. First operand 12867 states and 16304 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:27,075 INFO L93 Difference]: Finished difference Result 25690 states and 32559 transitions. [2021-11-06 18:19:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-06 18:19:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:27,093 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:27,093 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:27,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2656967245001167) internal successors, (16268), 12866 states have internal predecessors, (16268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16268 transitions. [2021-11-06 18:19:27,560 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16268 transitions. Word has length 123 [2021-11-06 18:19:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:27,560 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16268 transitions. [2021-11-06 18:19:27,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16268 transitions. [2021-11-06 18:19:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 18:19:27,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:27,564 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:27,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:19:27,565 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1056469033, now seen corresponding path program 1 times [2021-11-06 18:19:27,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:27,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817615676] [2021-11-06 18:19:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:27,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:27,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:27,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817615676] [2021-11-06 18:19:27,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817615676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:27,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:27,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:27,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215932405] [2021-11-06 18:19:27,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:27,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:27,863 INFO L87 Difference]: Start difference. First operand 12867 states and 16268 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:28,585 INFO L93 Difference]: Finished difference Result 25690 states and 32487 transitions. [2021-11-06 18:19:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:28,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 18:19:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:28,605 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:28,605 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:28,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2628958219870847) internal successors, (16232), 12866 states have internal predecessors, (16232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16232 transitions. [2021-11-06 18:19:29,220 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16232 transitions. Word has length 124 [2021-11-06 18:19:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:29,220 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16232 transitions. [2021-11-06 18:19:29,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16232 transitions. [2021-11-06 18:19:29,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 18:19:29,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:29,224 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:29,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 18:19:29,225 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1608055702, now seen corresponding path program 1 times [2021-11-06 18:19:29,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:29,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716731091] [2021-11-06 18:19:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:29,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:29,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:29,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716731091] [2021-11-06 18:19:29,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716731091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:29,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:29,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:29,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496598004] [2021-11-06 18:19:29,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:29,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:29,497 INFO L87 Difference]: Start difference. First operand 12867 states and 16232 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:30,226 INFO L93 Difference]: Finished difference Result 25690 states and 32415 transitions. [2021-11-06 18:19:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-06 18:19:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:30,245 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:30,245 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:30,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2600949194740527) internal successors, (16196), 12866 states have internal predecessors, (16196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16196 transitions. [2021-11-06 18:19:30,876 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16196 transitions. Word has length 125 [2021-11-06 18:19:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:30,877 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16196 transitions. [2021-11-06 18:19:30,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16196 transitions. [2021-11-06 18:19:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 18:19:30,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:30,881 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:30,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 18:19:30,881 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1691172388, now seen corresponding path program 1 times [2021-11-06 18:19:30,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:30,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827277382] [2021-11-06 18:19:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:30,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:31,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:31,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827277382] [2021-11-06 18:19:31,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827277382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:31,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:31,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:31,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761505996] [2021-11-06 18:19:31,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:31,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:31,181 INFO L87 Difference]: Start difference. First operand 12867 states and 16196 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:32,059 INFO L93 Difference]: Finished difference Result 25690 states and 32343 transitions. [2021-11-06 18:19:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-06 18:19:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:32,075 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:32,076 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:32,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2572940169610207) internal successors, (16160), 12866 states have internal predecessors, (16160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16160 transitions. [2021-11-06 18:19:32,637 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16160 transitions. Word has length 126 [2021-11-06 18:19:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:32,637 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16160 transitions. [2021-11-06 18:19:32,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16160 transitions. [2021-11-06 18:19:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 18:19:32,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:32,641 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:32,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 18:19:32,641 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash 888177029, now seen corresponding path program 1 times [2021-11-06 18:19:32,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:32,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76117883] [2021-11-06 18:19:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:32,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:32,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:32,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76117883] [2021-11-06 18:19:32,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76117883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:32,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:32,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:32,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896476211] [2021-11-06 18:19:32,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:32,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:32,938 INFO L87 Difference]: Start difference. First operand 12867 states and 16160 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:33,835 INFO L93 Difference]: Finished difference Result 25690 states and 32271 transitions. [2021-11-06 18:19:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-06 18:19:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:33,853 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:33,853 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:33,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2544931144479887) internal successors, (16124), 12866 states have internal predecessors, (16124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16124 transitions. [2021-11-06 18:19:34,486 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16124 transitions. Word has length 127 [2021-11-06 18:19:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:34,487 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16124 transitions. [2021-11-06 18:19:34,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16124 transitions. [2021-11-06 18:19:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 18:19:34,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:34,491 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:34,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 18:19:34,492 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1765273631, now seen corresponding path program 1 times [2021-11-06 18:19:34,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:34,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571132350] [2021-11-06 18:19:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:34,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:34,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:34,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571132350] [2021-11-06 18:19:34,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571132350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:34,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:34,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:34,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223449060] [2021-11-06 18:19:34,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:34,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:34,801 INFO L87 Difference]: Start difference. First operand 12867 states and 16124 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:35,713 INFO L93 Difference]: Finished difference Result 25690 states and 32199 transitions. [2021-11-06 18:19:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:35,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-06 18:19:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:35,732 INFO L225 Difference]: With dead ends: 25690 [2021-11-06 18:19:35,732 INFO L226 Difference]: Without dead ends: 12867 [2021-11-06 18:19:35,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-06 18:19:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-06 18:19:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12867 states, 12853 states have (on average 1.2516922119349567) internal successors, (16088), 12866 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16088 transitions. [2021-11-06 18:19:36,506 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16088 transitions. Word has length 128 [2021-11-06 18:19:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:36,506 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16088 transitions. [2021-11-06 18:19:36,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16088 transitions. [2021-11-06 18:19:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 18:19:36,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:36,511 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:36,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 18:19:36,511 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:36,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1109353824, now seen corresponding path program 1 times [2021-11-06 18:19:36,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:36,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846396146] [2021-11-06 18:19:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:36,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:36,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:36,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846396146] [2021-11-06 18:19:36,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846396146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:36,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:36,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:36,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194896185] [2021-11-06 18:19:36,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:36,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:36,791 INFO L87 Difference]: Start difference. First operand 12867 states and 16088 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:39,269 INFO L93 Difference]: Finished difference Result 51304 states and 64173 transitions. [2021-11-06 18:19:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:19:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-06 18:19:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:39,334 INFO L225 Difference]: With dead ends: 51304 [2021-11-06 18:19:39,335 INFO L226 Difference]: Without dead ends: 38481 [2021-11-06 18:19:39,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38481 states. [2021-11-06 18:19:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38481 to 24510. [2021-11-06 18:19:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24510 states, 24496 states have (on average 1.2546129980404963) internal successors, (30733), 24509 states have internal predecessors, (30733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24510 states to 24510 states and 30733 transitions. [2021-11-06 18:19:40,935 INFO L78 Accepts]: Start accepts. Automaton has 24510 states and 30733 transitions. Word has length 129 [2021-11-06 18:19:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:40,935 INFO L470 AbstractCegarLoop]: Abstraction has 24510 states and 30733 transitions. [2021-11-06 18:19:40,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 24510 states and 30733 transitions. [2021-11-06 18:19:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 18:19:40,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:40,941 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:40,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 18:19:40,941 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1109294242, now seen corresponding path program 1 times [2021-11-06 18:19:40,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:40,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6738088] [2021-11-06 18:19:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:40,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:19:41,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:41,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6738088] [2021-11-06 18:19:41,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6738088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:41,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:41,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:19:41,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393413952] [2021-11-06 18:19:41,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:19:41,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:19:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:19:41,278 INFO L87 Difference]: Start difference. First operand 24510 states and 30733 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:47,964 INFO L93 Difference]: Finished difference Result 85166 states and 107141 transitions. [2021-11-06 18:19:47,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:19:47,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-06 18:19:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:48,145 INFO L225 Difference]: With dead ends: 85166 [2021-11-06 18:19:48,145 INFO L226 Difference]: Without dead ends: 85148 [2021-11-06 18:19:48,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:19:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85148 states. [2021-11-06 18:19:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85148 to 24510. [2021-11-06 18:19:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24510 states, 24496 states have (on average 1.2537148922273025) internal successors, (30711), 24509 states have internal predecessors, (30711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24510 states to 24510 states and 30711 transitions. [2021-11-06 18:19:50,424 INFO L78 Accepts]: Start accepts. Automaton has 24510 states and 30711 transitions. Word has length 129 [2021-11-06 18:19:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:50,425 INFO L470 AbstractCegarLoop]: Abstraction has 24510 states and 30711 transitions. [2021-11-06 18:19:50,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 24510 states and 30711 transitions. [2021-11-06 18:19:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 18:19:50,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:50,436 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:50,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 18:19:50,436 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -191735279, now seen corresponding path program 1 times [2021-11-06 18:19:50,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:50,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831704156] [2021-11-06 18:19:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:50,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:19:50,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:50,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831704156] [2021-11-06 18:19:50,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831704156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:50,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:50,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:50,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191484362] [2021-11-06 18:19:50,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:50,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:50,668 INFO L87 Difference]: Start difference. First operand 24510 states and 30711 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:19:55,907 INFO L93 Difference]: Finished difference Result 61632 states and 77368 transitions. [2021-11-06 18:19:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:19:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-06 18:19:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:19:55,970 INFO L225 Difference]: With dead ends: 61632 [2021-11-06 18:19:55,971 INFO L226 Difference]: Without dead ends: 37166 [2021-11-06 18:19:56,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37166 states. [2021-11-06 18:19:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37166 to 36088. [2021-11-06 18:19:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36088 states, 36074 states have (on average 1.2571658258025171) internal successors, (45351), 36087 states have internal predecessors, (45351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36088 states to 36088 states and 45351 transitions. [2021-11-06 18:19:58,646 INFO L78 Accepts]: Start accepts. Automaton has 36088 states and 45351 transitions. Word has length 171 [2021-11-06 18:19:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:19:58,646 INFO L470 AbstractCegarLoop]: Abstraction has 36088 states and 45351 transitions. [2021-11-06 18:19:58,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:19:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 36088 states and 45351 transitions. [2021-11-06 18:19:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-06 18:19:58,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:19:58,660 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:19:58,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 18:19:58,661 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:19:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:19:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1300646843, now seen corresponding path program 1 times [2021-11-06 18:19:58,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:19:58,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764993381] [2021-11-06 18:19:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:19:58,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:19:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:19:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 18:19:58,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:19:58,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764993381] [2021-11-06 18:19:58,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764993381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:19:58,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:19:58,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:19:58,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349977701] [2021-11-06 18:19:58,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:19:58,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:19:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:19:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:19:58,937 INFO L87 Difference]: Start difference. First operand 36088 states and 45351 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:20:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:20:04,779 INFO L93 Difference]: Finished difference Result 84660 states and 106328 transitions. [2021-11-06 18:20:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:20:04,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-06 18:20:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:20:04,878 INFO L225 Difference]: With dead ends: 84660 [2021-11-06 18:20:04,878 INFO L226 Difference]: Without dead ends: 48616 [2021-11-06 18:20:04,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:20:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48616 states. [2021-11-06 18:20:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48616 to 47538. [2021-11-06 18:20:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47538 states, 47524 states have (on average 1.2566071879471425) internal successors, (59719), 47537 states have internal predecessors, (59719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:20:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47538 states to 47538 states and 59719 transitions. [2021-11-06 18:20:08,880 INFO L78 Accepts]: Start accepts. Automaton has 47538 states and 59719 transitions. Word has length 174 [2021-11-06 18:20:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:20:08,880 INFO L470 AbstractCegarLoop]: Abstraction has 47538 states and 59719 transitions. [2021-11-06 18:20:08,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:20:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 47538 states and 59719 transitions. [2021-11-06 18:20:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 18:20:08,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:20:08,885 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:20:08,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 18:20:08,885 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:20:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:20:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -423741171, now seen corresponding path program 1 times [2021-11-06 18:20:08,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:20:08,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444138622] [2021-11-06 18:20:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:20:08,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:20:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:20:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:20:09,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:20:09,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444138622] [2021-11-06 18:20:09,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444138622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:20:09,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:20:09,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:20:09,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135457683] [2021-11-06 18:20:09,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:20:09,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:20:09,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:20:09,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:20:09,136 INFO L87 Difference]: Start difference. First operand 47538 states and 59719 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:20:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:20:15,363 INFO L93 Difference]: Finished difference Result 99636 states and 125287 transitions. [2021-11-06 18:20:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:20:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-11-06 18:20:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:20:15,456 INFO L225 Difference]: With dead ends: 99636 [2021-11-06 18:20:15,456 INFO L226 Difference]: Without dead ends: 52142 [2021-11-06 18:20:15,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:20:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52142 states. [2021-11-06 18:20:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52142 to 52086. [2021-11-06 18:20:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52086 states, 52072 states have (on average 1.2558956829005992) internal successors, (65397), 52085 states have internal predecessors, (65397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:20:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52086 states to 52086 states and 65397 transitions. [2021-11-06 18:20:19,737 INFO L78 Accepts]: Start accepts. Automaton has 52086 states and 65397 transitions. Word has length 192 [2021-11-06 18:20:19,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:20:19,737 INFO L470 AbstractCegarLoop]: Abstraction has 52086 states and 65397 transitions. [2021-11-06 18:20:19,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:20:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 52086 states and 65397 transitions. [2021-11-06 18:20:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-06 18:20:19,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:20:19,742 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:20:19,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 18:20:19,742 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 18:20:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:20:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash 691487055, now seen corresponding path program 1 times [2021-11-06 18:20:19,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:20:19,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712945581] [2021-11-06 18:20:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:20:19,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:20:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:20:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:20:20,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:20:20,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712945581] [2021-11-06 18:20:20,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712945581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:20:20,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:20:20,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:20:20,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402097149] [2021-11-06 18:20:20,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:20:20,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:20:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:20:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:20:20,075 INFO L87 Difference]: Start difference. First operand 52086 states and 65397 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)