./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 5b36d44f 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-wip.dd.seqcomp-5b36d44 [2021-11-07 16:39:11,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:39:11,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:39:12,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:39:12,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:39:12,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:39:12,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:39:12,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:39:12,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:39:12,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:39:12,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:39:12,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:39:12,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:39:12,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:39:12,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:39:12,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:39:12,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:39:12,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:39:12,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:39:12,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:39:12,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:39:12,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:39:12,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:39:12,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:39:12,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:39:12,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:39:12,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:39:12,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:39:12,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:39:12,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:39:12,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:39:12,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:39:12,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:39:12,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:39:12,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:39:12,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:39:12,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:39:12,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:39:12,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:39:12,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:39:12,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:39:12,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:39:12,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:39:12,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:39:12,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:39:12,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:39:12,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:39:12,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:39:12,106 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:39:12,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:39:12,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:39:12,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:39:12,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:39:12,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:39:12,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:39:12,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:39:12,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:39:12,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:39:12,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:39:12,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:39:12,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:39:12,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:39:12,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:39:12,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:39:12,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:39:12,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:39:12,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:39:12,109 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:39:12,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:39:12,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:39:12,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:39:12,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2021-11-07 16:39:12,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:39:12,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:39:12,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:39:12,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:39:12,318 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:39:12,319 INFO L432 ainManager$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 [2021-11-07 16:39:12,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12955a9f7/e2e93bc0bca041328dc6e7fe65db93c5/FLAGb859ea72b [2021-11-07 16:39:13,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:39:13,073 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 [2021-11-07 16:39:13,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12955a9f7/e2e93bc0bca041328dc6e7fe65db93c5/FLAGb859ea72b [2021-11-07 16:39:13,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12955a9f7/e2e93bc0bca041328dc6e7fe65db93c5 [2021-11-07 16:39:13,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:39:13,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:39:13,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:39:13,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:39:13,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:39:13,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:39:13" (1/1) ... [2021-11-07 16:39:13,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3aec51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:13, skipping insertion in model container [2021-11-07 16:39:13,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:39:13" (1/1) ... [2021-11-07 16:39:13,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:39:13,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:39:15,264 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] [2021-11-07 16:39:15,266 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] [2021-11-07 16:39:15,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:39:15,307 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:39:15,563 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] [2021-11-07 16:39:15,563 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] [2021-11-07 16:39:15,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:39:15,682 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:39:15,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15 WrapperNode [2021-11-07 16:39:15,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:39:15,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:39:15,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:39:15,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:39:15,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:15,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:16,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:39:16,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:39:16,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:39:16,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:39:16,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:16,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:16,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:16,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:16,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:17,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:17,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:17,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:39:17,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:39:17,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:39:17,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:39:17,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (1/1) ... [2021-11-07 16:39:17,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:39:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:39:17,316 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) [2021-11-07 16:39:17,322 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 [2021-11-07 16:39:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:39:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:39:17,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:39:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:39:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:39:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:39:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:39:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:39:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:43:46,084 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:43:46,084 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:43:46,084 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:43:46,085 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:43:46,086 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:43:46,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:43:46,113 INFO L299 CfgBuilder]: Removed 5622 assume(true) statements. [2021-11-07 16:43:46,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:43:46 BoogieIcfgContainer [2021-11-07 16:43:46,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:43:46,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:43:46,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:43:46,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:43:46,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:39:13" (1/3) ... [2021-11-07 16:43:46,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c7cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:43:46, skipping insertion in model container [2021-11-07 16:43:46,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:15" (2/3) ... [2021-11-07 16:43:46,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0c7cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:43:46, skipping insertion in model container [2021-11-07 16:43:46,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:43:46" (3/3) ... [2021-11-07 16:43:46,127 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-07 16:43:46,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:43:46,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 16:43:46,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:43:46,181 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 [2021-11-07 16:43:46,182 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 16:43:46,240 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) [2021-11-07 16:43:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 16:43:46,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:46,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:43:46,252 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)] === [2021-11-07 16:43:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1610179768, now seen corresponding path program 1 times [2021-11-07 16:43:46,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:46,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325371047] [2021-11-07 16:43:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:46,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:47,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:47,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325371047] [2021-11-07 16:43:47,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325371047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:47,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:47,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:47,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48065330] [2021-11-07 16:43:47,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:47,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:47,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:47,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:47,095 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) [2021-11-07 16:43:49,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:49,716 INFO L93 Difference]: Finished difference Result 13267 states and 17767 transitions. [2021-11-07 16:43:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:49,719 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 [2021-11-07 16:43:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:49,752 INFO L225 Difference]: With dead ends: 13267 [2021-11-07 16:43:49,752 INFO L226 Difference]: Without dead ends: 7806 [2021-11-07 16:43:49,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:49,767 INFO L933 BasicCegarLoop]: 6754 mSDtfsCounter, 6487 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2207.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6487 SdHoareTripleChecker+Valid, 10749 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.02ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2390.74ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:49,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6487 Valid, 10749 Invalid, 75 Unknown, 0 Unchecked, 21.02ms Time], IncrementalHoareTripleChecker [23 Valid, 51 Invalid, 1 Unknown, 0 Unchecked, 2390.74ms Time] [2021-11-07 16:43:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7806 states. [2021-11-07 16:43:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7806 to 7195. [2021-11-07 16:43:50,073 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) [2021-11-07 16:43:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 9351 transitions. [2021-11-07 16:43:50,093 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 9351 transitions. Word has length 42 [2021-11-07 16:43:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:50,094 INFO L470 AbstractCegarLoop]: Abstraction has 7195 states and 9351 transitions. [2021-11-07 16:43:50,094 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) [2021-11-07 16:43:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 9351 transitions. [2021-11-07 16:43:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 16:43:50,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:50,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:43:50,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:43:50,100 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)] === [2021-11-07 16:43:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1855051487, now seen corresponding path program 1 times [2021-11-07 16:43:50,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:50,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508974105] [2021-11-07 16:43:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:50,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:50,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:50,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508974105] [2021-11-07 16:43:50,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508974105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:50,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:50,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:50,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842239088] [2021-11-07 16:43:50,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:50,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:50,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:50,449 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) [2021-11-07 16:43:52,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:52,981 INFO L93 Difference]: Finished difference Result 16256 states and 21112 transitions. [2021-11-07 16:43:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:52,981 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 [2021-11-07 16:43:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:53,008 INFO L225 Difference]: With dead ends: 16256 [2021-11-07 16:43:53,008 INFO L226 Difference]: Without dead ends: 9105 [2021-11-07 16:43:53,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:53,020 INFO L933 BasicCegarLoop]: 6687 mSDtfsCounter, 1906 mSDsluCounter, 6462 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2191.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 13149 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2364.21ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:53,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1906 Valid, 13149 Invalid, 88 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2364.21ms Time] [2021-11-07 16:43:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2021-11-07 16:43:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 9089. [2021-11-07 16:43:53,191 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) [2021-11-07 16:43:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 11768 transitions. [2021-11-07 16:43:53,209 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 11768 transitions. Word has length 47 [2021-11-07 16:43:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:53,210 INFO L470 AbstractCegarLoop]: Abstraction has 9089 states and 11768 transitions. [2021-11-07 16:43:53,211 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) [2021-11-07 16:43:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 11768 transitions. [2021-11-07 16:43:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 16:43:53,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:53,218 INFO L514 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] [2021-11-07 16:43:53,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:43:53,219 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)] === [2021-11-07 16:43:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -232223923, now seen corresponding path program 1 times [2021-11-07 16:43:53,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:53,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675793599] [2021-11-07 16:43:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:53,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:53,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:53,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675793599] [2021-11-07 16:43:53,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675793599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:53,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:53,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:53,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481834216] [2021-11-07 16:43:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:53,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:53,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:53,561 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) [2021-11-07 16:43:55,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:56,087 INFO L93 Difference]: Finished difference Result 20044 states and 25946 transitions. [2021-11-07 16:43:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:56,088 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 [2021-11-07 16:43:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:56,130 INFO L225 Difference]: With dead ends: 20044 [2021-11-07 16:43:56,130 INFO L226 Difference]: Without dead ends: 10999 [2021-11-07 16:43:56,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:56,148 INFO L933 BasicCegarLoop]: 6498 mSDtfsCounter, 1911 mSDsluCounter, 6447 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2177.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 12945 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.26ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2353.43ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:56,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 12945 Invalid, 88 Unknown, 0 Unchecked, 11.26ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2353.43ms Time] [2021-11-07 16:43:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2021-11-07 16:43:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10983. [2021-11-07 16:43:56,457 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) [2021-11-07 16:43:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 14187 transitions. [2021-11-07 16:43:56,471 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 14187 transitions. Word has length 78 [2021-11-07 16:43:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:56,473 INFO L470 AbstractCegarLoop]: Abstraction has 10983 states and 14187 transitions. [2021-11-07 16:43:56,473 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) [2021-11-07 16:43:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 14187 transitions. [2021-11-07 16:43:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 16:43:56,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:56,477 INFO L514 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] [2021-11-07 16:43:56,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:43:56,478 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)] === [2021-11-07 16:43:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash 585100769, now seen corresponding path program 1 times [2021-11-07 16:43:56,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:56,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172992634] [2021-11-07 16:43:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:56,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:43:56,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:56,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172992634] [2021-11-07 16:43:56,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172992634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:56,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:56,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:56,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743160020] [2021-11-07 16:43:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:56,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:56,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:56,807 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) [2021-11-07 16:43:58,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:59,349 INFO L93 Difference]: Finished difference Result 23822 states and 30764 transitions. [2021-11-07 16:43:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:59,350 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 [2021-11-07 16:43:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:59,374 INFO L225 Difference]: With dead ends: 23822 [2021-11-07 16:43:59,374 INFO L226 Difference]: Without dead ends: 12883 [2021-11-07 16:43:59,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:59,392 INFO L933 BasicCegarLoop]: 8425 mSDtfsCounter, 1905 mSDsluCounter, 6460 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2162.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 14885 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.69ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2379.28ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:59,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 14885 Invalid, 79 Unknown, 0 Unchecked, 10.69ms Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2379.28ms Time] [2021-11-07 16:43:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12883 states. [2021-11-07 16:43:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12883 to 12867. [2021-11-07 16:43:59,586 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) [2021-11-07 16:43:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16592 transitions. [2021-11-07 16:43:59,606 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16592 transitions. Word has length 115 [2021-11-07 16:43:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:59,607 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16592 transitions. [2021-11-07 16:43:59,607 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) [2021-11-07 16:43:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16592 transitions. [2021-11-07 16:43:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 16:43:59,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:59,615 INFO L514 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] [2021-11-07 16:43:59,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:43:59,615 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)] === [2021-11-07 16:43:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1971304163, now seen corresponding path program 1 times [2021-11-07 16:43:59,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:59,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409295966] [2021-11-07 16:43:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:59,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:43:59,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:59,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409295966] [2021-11-07 16:43:59,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409295966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:59,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:59,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:43:59,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060843738] [2021-11-07 16:43:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:59,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:59,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:59,973 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) [2021-11-07 16:44:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:00,289 INFO L93 Difference]: Finished difference Result 25690 states and 33135 transitions. [2021-11-07 16:44:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:00,291 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 [2021-11-07 16:44:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:00,314 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:00,314 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:00,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:00,333 INFO L933 BasicCegarLoop]: 6490 mSDtfsCounter, 6415 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6415 SdHoareTripleChecker+Valid, 6490 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.08ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:00,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6415 Valid, 6490 Invalid, 27 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 46.08ms Time] [2021-11-07 16:44:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:00,528 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) [2021-11-07 16:44:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16556 transitions. [2021-11-07 16:44:00,550 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16556 transitions. Word has length 115 [2021-11-07 16:44:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:00,551 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16556 transitions. [2021-11-07 16:44:00,551 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) [2021-11-07 16:44:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16556 transitions. [2021-11-07 16:44:00,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 16:44:00,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:00,555 INFO L514 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] [2021-11-07 16:44:00,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:44:00,556 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)] === [2021-11-07 16:44:00,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 980688957, now seen corresponding path program 1 times [2021-11-07 16:44:00,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:00,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180359428] [2021-11-07 16:44:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:00,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:00,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:00,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180359428] [2021-11-07 16:44:00,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180359428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:00,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:00,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:00,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819561178] [2021-11-07 16:44:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:00,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:00,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:00,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:00,880 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) [2021-11-07 16:44:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:01,287 INFO L93 Difference]: Finished difference Result 25690 states and 33063 transitions. [2021-11-07 16:44:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:01,287 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 [2021-11-07 16:44:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:01,310 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:01,310 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:01,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:01,330 INFO L933 BasicCegarLoop]: 6462 mSDtfsCounter, 12889 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12889 SdHoareTripleChecker+Valid, 6462 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.35ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.63ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:01,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12889 Valid, 6462 Invalid, 42 Unknown, 0 Unchecked, 13.35ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 142.63ms Time] [2021-11-07 16:44:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:01,698 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) [2021-11-07 16:44:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16520 transitions. [2021-11-07 16:44:01,719 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16520 transitions. Word has length 116 [2021-11-07 16:44:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:01,719 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16520 transitions. [2021-11-07 16:44:01,719 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) [2021-11-07 16:44:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16520 transitions. [2021-11-07 16:44:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 16:44:01,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:01,724 INFO L514 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] [2021-11-07 16:44:01,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:44:01,724 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)] === [2021-11-07 16:44:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash 336537598, now seen corresponding path program 1 times [2021-11-07 16:44:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:01,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288944686] [2021-11-07 16:44:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:02,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:02,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288944686] [2021-11-07 16:44:02,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288944686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:02,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:02,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:02,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535773608] [2021-11-07 16:44:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:02,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:02,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:02,076 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) [2021-11-07 16:44:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:02,597 INFO L93 Difference]: Finished difference Result 25690 states and 32991 transitions. [2021-11-07 16:44:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:02,598 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 [2021-11-07 16:44:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:02,623 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:02,624 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:02,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:02,644 INFO L933 BasicCegarLoop]: 6448 mSDtfsCounter, 12860 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12860 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.81ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.49ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:02,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12860 Valid, 6448 Invalid, 42 Unknown, 0 Unchecked, 14.81ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 148.49ms Time] [2021-11-07 16:44:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:02,917 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) [2021-11-07 16:44:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16484 transitions. [2021-11-07 16:44:02,936 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16484 transitions. Word has length 117 [2021-11-07 16:44:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:02,936 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16484 transitions. [2021-11-07 16:44:02,936 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) [2021-11-07 16:44:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16484 transitions. [2021-11-07 16:44:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 16:44:02,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:02,940 INFO L514 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] [2021-11-07 16:44:02,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:44:02,941 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)] === [2021-11-07 16:44:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1842830904, now seen corresponding path program 1 times [2021-11-07 16:44:02,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:02,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246782021] [2021-11-07 16:44:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:02,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:03,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:03,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246782021] [2021-11-07 16:44:03,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246782021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:03,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:03,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:03,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379469765] [2021-11-07 16:44:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:03,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:03,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:03,286 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) [2021-11-07 16:44:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:03,704 INFO L93 Difference]: Finished difference Result 25690 states and 32919 transitions. [2021-11-07 16:44:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:03,705 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 [2021-11-07 16:44:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:03,725 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:03,726 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:03,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:03,739 INFO L933 BasicCegarLoop]: 6434 mSDtfsCounter, 12831 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12831 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.05ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.52ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:03,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12831 Valid, 6434 Invalid, 42 Unknown, 0 Unchecked, 10.05ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 117.52ms Time] [2021-11-07 16:44:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:04,016 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) [2021-11-07 16:44:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16448 transitions. [2021-11-07 16:44:04,033 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16448 transitions. Word has length 118 [2021-11-07 16:44:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:04,033 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16448 transitions. [2021-11-07 16:44:04,033 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) [2021-11-07 16:44:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16448 transitions. [2021-11-07 16:44:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 16:44:04,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:04,039 INFO L514 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] [2021-11-07 16:44:04,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:44:04,039 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)] === [2021-11-07 16:44:04,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1293432089, now seen corresponding path program 1 times [2021-11-07 16:44:04,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:04,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760974830] [2021-11-07 16:44:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:04,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:04,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:04,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760974830] [2021-11-07 16:44:04,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760974830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:04,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:04,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175628731] [2021-11-07 16:44:04,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:04,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:04,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:04,362 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) [2021-11-07 16:44:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:04,911 INFO L93 Difference]: Finished difference Result 25690 states and 32847 transitions. [2021-11-07 16:44:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:04,912 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 [2021-11-07 16:44:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:04,933 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:04,934 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:04,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:04,952 INFO L933 BasicCegarLoop]: 6420 mSDtfsCounter, 12802 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12802 SdHoareTripleChecker+Valid, 6420 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.10ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:04,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12802 Valid, 6420 Invalid, 42 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 146.10ms Time] [2021-11-07 16:44:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:05,290 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) [2021-11-07 16:44:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16412 transitions. [2021-11-07 16:44:05,313 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16412 transitions. Word has length 119 [2021-11-07 16:44:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:05,313 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16412 transitions. [2021-11-07 16:44:05,314 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) [2021-11-07 16:44:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16412 transitions. [2021-11-07 16:44:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 16:44:05,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:05,318 INFO L514 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] [2021-11-07 16:44:05,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:44:05,319 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)] === [2021-11-07 16:44:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1442086963, now seen corresponding path program 1 times [2021-11-07 16:44:05,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:05,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774273718] [2021-11-07 16:44:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:05,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:05,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:05,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774273718] [2021-11-07 16:44:05,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774273718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:05,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:05,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:05,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539335721] [2021-11-07 16:44:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:05,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:05,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:05,616 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) [2021-11-07 16:44:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:06,191 INFO L93 Difference]: Finished difference Result 25690 states and 32775 transitions. [2021-11-07 16:44:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:06,191 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 [2021-11-07 16:44:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:06,207 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:06,208 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:06,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:06,222 INFO L933 BasicCegarLoop]: 6406 mSDtfsCounter, 12773 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12773 SdHoareTripleChecker+Valid, 6406 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.20ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:06,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12773 Valid, 6406 Invalid, 42 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 138.20ms Time] [2021-11-07 16:44:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:06,550 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) [2021-11-07 16:44:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16376 transitions. [2021-11-07 16:44:06,565 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16376 transitions. Word has length 120 [2021-11-07 16:44:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:06,566 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16376 transitions. [2021-11-07 16:44:06,566 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) [2021-11-07 16:44:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16376 transitions. [2021-11-07 16:44:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 16:44:06,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:06,570 INFO L514 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] [2021-11-07 16:44:06,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:44:06,570 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)] === [2021-11-07 16:44:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1755569716, now seen corresponding path program 1 times [2021-11-07 16:44:06,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:06,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341374261] [2021-11-07 16:44:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:06,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:06,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:06,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341374261] [2021-11-07 16:44:06,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341374261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:06,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:06,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:06,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378845189] [2021-11-07 16:44:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:06,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:06,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:06,861 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) [2021-11-07 16:44:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:07,456 INFO L93 Difference]: Finished difference Result 25690 states and 32703 transitions. [2021-11-07 16:44:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:07,457 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 [2021-11-07 16:44:07,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:07,473 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:07,473 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:07,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:07,488 INFO L933 BasicCegarLoop]: 6392 mSDtfsCounter, 12744 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12744 SdHoareTripleChecker+Valid, 6392 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.33ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:07,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12744 Valid, 6392 Invalid, 42 Unknown, 0 Unchecked, 9.33ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 193.85ms Time] [2021-11-07 16:44:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:07,855 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) [2021-11-07 16:44:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16340 transitions. [2021-11-07 16:44:07,871 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16340 transitions. Word has length 121 [2021-11-07 16:44:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:07,873 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16340 transitions. [2021-11-07 16:44:07,873 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) [2021-11-07 16:44:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16340 transitions. [2021-11-07 16:44:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 16:44:07,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:07,877 INFO L514 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] [2021-11-07 16:44:07,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 16:44:07,877 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)] === [2021-11-07 16:44:07,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1411217874, now seen corresponding path program 1 times [2021-11-07 16:44:07,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:07,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310232295] [2021-11-07 16:44:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:07,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:08,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:08,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310232295] [2021-11-07 16:44:08,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310232295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:08,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:08,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:08,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941701272] [2021-11-07 16:44:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:08,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:08,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:08,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:08,126 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) [2021-11-07 16:44:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:08,791 INFO L93 Difference]: Finished difference Result 25690 states and 32631 transitions. [2021-11-07 16:44:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:08,792 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 [2021-11-07 16:44:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:08,838 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:08,838 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:08,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:08,857 INFO L933 BasicCegarLoop]: 6378 mSDtfsCounter, 12715 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12715 SdHoareTripleChecker+Valid, 6378 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.76ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.66ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:08,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12715 Valid, 6378 Invalid, 42 Unknown, 0 Unchecked, 9.76ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 155.66ms Time] [2021-11-07 16:44:08,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:09,266 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) [2021-11-07 16:44:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16304 transitions. [2021-11-07 16:44:09,281 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16304 transitions. Word has length 122 [2021-11-07 16:44:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:09,282 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16304 transitions. [2021-11-07 16:44:09,282 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) [2021-11-07 16:44:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16304 transitions. [2021-11-07 16:44:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 16:44:09,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:09,286 INFO L514 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] [2021-11-07 16:44:09,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 16:44:09,286 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)] === [2021-11-07 16:44:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -797236401, now seen corresponding path program 1 times [2021-11-07 16:44:09,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:09,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342683332] [2021-11-07 16:44:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:09,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:09,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:09,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342683332] [2021-11-07 16:44:09,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342683332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:09,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:09,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:09,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667171724] [2021-11-07 16:44:09,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:09,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:09,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:09,600 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) [2021-11-07 16:44:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:10,214 INFO L93 Difference]: Finished difference Result 25690 states and 32559 transitions. [2021-11-07 16:44:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:10,215 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 [2021-11-07 16:44:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:10,241 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:10,241 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:10,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:10,262 INFO L933 BasicCegarLoop]: 6364 mSDtfsCounter, 12686 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12686 SdHoareTripleChecker+Valid, 6364 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.27ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.44ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:10,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12686 Valid, 6364 Invalid, 42 Unknown, 0 Unchecked, 9.27ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 136.44ms Time] [2021-11-07 16:44:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:10,790 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) [2021-11-07 16:44:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16268 transitions. [2021-11-07 16:44:10,808 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16268 transitions. Word has length 123 [2021-11-07 16:44:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:10,809 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16268 transitions. [2021-11-07 16:44:10,809 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) [2021-11-07 16:44:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16268 transitions. [2021-11-07 16:44:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 16:44:10,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:10,813 INFO L514 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] [2021-11-07 16:44:10,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 16:44:10,813 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)] === [2021-11-07 16:44:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1056469033, now seen corresponding path program 1 times [2021-11-07 16:44:10,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:10,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517933228] [2021-11-07 16:44:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:10,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:11,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:11,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517933228] [2021-11-07 16:44:11,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517933228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:11,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:11,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:11,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744329033] [2021-11-07 16:44:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:11,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:11,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:11,088 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) [2021-11-07 16:44:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:11,808 INFO L93 Difference]: Finished difference Result 25690 states and 32487 transitions. [2021-11-07 16:44:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:11,809 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 [2021-11-07 16:44:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:11,826 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:11,826 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:11,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:11,841 INFO L933 BasicCegarLoop]: 6350 mSDtfsCounter, 12657 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12657 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.10ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:11,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12657 Valid, 6350 Invalid, 42 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 199.10ms Time] [2021-11-07 16:44:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:12,301 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) [2021-11-07 16:44:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16232 transitions. [2021-11-07 16:44:12,318 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16232 transitions. Word has length 124 [2021-11-07 16:44:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:12,319 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16232 transitions. [2021-11-07 16:44:12,319 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) [2021-11-07 16:44:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16232 transitions. [2021-11-07 16:44:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 16:44:12,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:12,323 INFO L514 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] [2021-11-07 16:44:12,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 16:44:12,323 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)] === [2021-11-07 16:44:12,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1608055702, now seen corresponding path program 1 times [2021-11-07 16:44:12,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:12,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043716591] [2021-11-07 16:44:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:12,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:12,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:12,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043716591] [2021-11-07 16:44:12,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043716591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:12,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:12,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:12,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341394332] [2021-11-07 16:44:12,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:12,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:12,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:12,608 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) [2021-11-07 16:44:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:13,502 INFO L93 Difference]: Finished difference Result 25690 states and 32415 transitions. [2021-11-07 16:44:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:13,502 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 [2021-11-07 16:44:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:13,523 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:13,523 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:13,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:13,546 INFO L933 BasicCegarLoop]: 6336 mSDtfsCounter, 12628 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12628 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.53ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.48ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:13,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12628 Valid, 6336 Invalid, 42 Unknown, 0 Unchecked, 11.53ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 164.48ms Time] [2021-11-07 16:44:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:14,052 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) [2021-11-07 16:44:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16196 transitions. [2021-11-07 16:44:14,067 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16196 transitions. Word has length 125 [2021-11-07 16:44:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:14,067 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16196 transitions. [2021-11-07 16:44:14,068 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) [2021-11-07 16:44:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16196 transitions. [2021-11-07 16:44:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 16:44:14,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:14,133 INFO L514 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] [2021-11-07 16:44:14,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 16:44:14,133 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)] === [2021-11-07 16:44:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1691172388, now seen corresponding path program 1 times [2021-11-07 16:44:14,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:14,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909786049] [2021-11-07 16:44:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:14,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:14,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:14,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909786049] [2021-11-07 16:44:14,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909786049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:14,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:14,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:14,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831234033] [2021-11-07 16:44:14,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:14,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:14,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:14,375 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) [2021-11-07 16:44:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:15,111 INFO L93 Difference]: Finished difference Result 25690 states and 32343 transitions. [2021-11-07 16:44:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:15,111 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 [2021-11-07 16:44:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:15,130 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:15,130 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:15,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:15,147 INFO L933 BasicCegarLoop]: 6322 mSDtfsCounter, 12599 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12599 SdHoareTripleChecker+Valid, 6322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.32ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.16ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:15,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12599 Valid, 6322 Invalid, 42 Unknown, 0 Unchecked, 9.32ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 141.16ms Time] [2021-11-07 16:44:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:15,765 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) [2021-11-07 16:44:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16160 transitions. [2021-11-07 16:44:15,783 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16160 transitions. Word has length 126 [2021-11-07 16:44:15,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:15,783 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16160 transitions. [2021-11-07 16:44:15,784 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) [2021-11-07 16:44:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16160 transitions. [2021-11-07 16:44:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 16:44:15,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:15,787 INFO L514 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] [2021-11-07 16:44:15,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 16:44:15,788 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)] === [2021-11-07 16:44:15,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 888177029, now seen corresponding path program 1 times [2021-11-07 16:44:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:15,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340727175] [2021-11-07 16:44:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:15,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:16,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:16,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340727175] [2021-11-07 16:44:16,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340727175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:16,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:16,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:16,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593955423] [2021-11-07 16:44:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:16,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:16,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:16,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:16,053 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) [2021-11-07 16:44:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:16,873 INFO L93 Difference]: Finished difference Result 25690 states and 32271 transitions. [2021-11-07 16:44:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:16,873 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 [2021-11-07 16:44:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:16,885 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:16,885 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:16,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:16,898 INFO L933 BasicCegarLoop]: 6308 mSDtfsCounter, 12570 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12570 SdHoareTripleChecker+Valid, 6308 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.22ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.90ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:16,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12570 Valid, 6308 Invalid, 42 Unknown, 0 Unchecked, 9.22ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 130.90ms Time] [2021-11-07 16:44:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:17,439 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) [2021-11-07 16:44:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16124 transitions. [2021-11-07 16:44:17,454 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16124 transitions. Word has length 127 [2021-11-07 16:44:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:17,454 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16124 transitions. [2021-11-07 16:44:17,454 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) [2021-11-07 16:44:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16124 transitions. [2021-11-07 16:44:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 16:44:17,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:17,458 INFO L514 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] [2021-11-07 16:44:17,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 16:44:17,458 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)] === [2021-11-07 16:44:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1765273631, now seen corresponding path program 1 times [2021-11-07 16:44:17,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:17,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545155055] [2021-11-07 16:44:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:17,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:17,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:17,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545155055] [2021-11-07 16:44:17,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545155055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:17,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:17,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:17,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067555721] [2021-11-07 16:44:17,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:17,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:17,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:17,698 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) [2021-11-07 16:44:18,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:18,811 INFO L93 Difference]: Finished difference Result 25690 states and 32199 transitions. [2021-11-07 16:44:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:18,812 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 [2021-11-07 16:44:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:18,829 INFO L225 Difference]: With dead ends: 25690 [2021-11-07 16:44:18,829 INFO L226 Difference]: Without dead ends: 12867 [2021-11-07 16:44:18,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:18,844 INFO L933 BasicCegarLoop]: 6294 mSDtfsCounter, 12541 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12541 SdHoareTripleChecker+Valid, 6294 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.47ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.58ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:18,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12541 Valid, 6294 Invalid, 42 Unknown, 0 Unchecked, 11.47ms Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 174.58ms Time] [2021-11-07 16:44:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2021-11-07 16:44:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 12867. [2021-11-07 16:44:19,434 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) [2021-11-07 16:44:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16088 transitions. [2021-11-07 16:44:19,449 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16088 transitions. Word has length 128 [2021-11-07 16:44:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:19,449 INFO L470 AbstractCegarLoop]: Abstraction has 12867 states and 16088 transitions. [2021-11-07 16:44:19,449 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) [2021-11-07 16:44:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16088 transitions. [2021-11-07 16:44:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 16:44:19,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:19,453 INFO L514 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] [2021-11-07 16:44:19,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 16:44:19,453 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)] === [2021-11-07 16:44:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:19,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1109353824, now seen corresponding path program 1 times [2021-11-07 16:44:19,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:19,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241073644] [2021-11-07 16:44:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:19,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:19,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:19,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241073644] [2021-11-07 16:44:19,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241073644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:19,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:19,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:19,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159675505] [2021-11-07 16:44:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:19,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:19,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:19,734 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) [2021-11-07 16:44:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:22,069 INFO L93 Difference]: Finished difference Result 51304 states and 64173 transitions. [2021-11-07 16:44:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:44:22,070 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 [2021-11-07 16:44:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:22,129 INFO L225 Difference]: With dead ends: 51304 [2021-11-07 16:44:22,129 INFO L226 Difference]: Without dead ends: 38481 [2021-11-07 16:44:22,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:22,156 INFO L933 BasicCegarLoop]: 6290 mSDtfsCounter, 18734 mSDsluCounter, 18681 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 303.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18734 SdHoareTripleChecker+Valid, 24971 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.14ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.03ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:22,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18734 Valid, 24971 Invalid, 174 Unknown, 0 Unchecked, 24.14ms Time], IncrementalHoareTripleChecker [43 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 337.03ms Time] [2021-11-07 16:44:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38481 states. [2021-11-07 16:44:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38481 to 24510. [2021-11-07 16:44:23,638 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) [2021-11-07 16:44:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24510 states to 24510 states and 30733 transitions. [2021-11-07 16:44:23,673 INFO L78 Accepts]: Start accepts. Automaton has 24510 states and 30733 transitions. Word has length 129 [2021-11-07 16:44:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:23,674 INFO L470 AbstractCegarLoop]: Abstraction has 24510 states and 30733 transitions. [2021-11-07 16:44:23,674 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) [2021-11-07 16:44:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 24510 states and 30733 transitions. [2021-11-07 16:44:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 16:44:23,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:23,679 INFO L514 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] [2021-11-07 16:44:23,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 16:44:23,680 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)] === [2021-11-07 16:44:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1109294242, now seen corresponding path program 1 times [2021-11-07 16:44:23,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:23,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347705798] [2021-11-07 16:44:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:23,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:44:23,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:23,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347705798] [2021-11-07 16:44:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347705798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:23,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:23,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:44:23,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018556141] [2021-11-07 16:44:23,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:23,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:44:23,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:44:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:44:23,977 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) [2021-11-07 16:44:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:30,435 INFO L93 Difference]: Finished difference Result 85166 states and 107141 transitions. [2021-11-07 16:44:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:44:30,435 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 [2021-11-07 16:44:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:30,569 INFO L225 Difference]: With dead ends: 85166 [2021-11-07 16:44:30,570 INFO L226 Difference]: Without dead ends: 85148 [2021-11-07 16:44:30,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:44:30,597 INFO L933 BasicCegarLoop]: 11884 mSDtfsCounter, 22501 mSDsluCounter, 21118 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1177.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22501 SdHoareTripleChecker+Valid, 33002 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.24ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1313.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:30,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22501 Valid, 33002 Invalid, 179 Unknown, 0 Unchecked, 44.24ms Time], IncrementalHoareTripleChecker [40 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1313.00ms Time] [2021-11-07 16:44:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85148 states. [2021-11-07 16:44:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85148 to 24510. [2021-11-07 16:44:32,764 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) [2021-11-07 16:44:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24510 states to 24510 states and 30711 transitions. [2021-11-07 16:44:32,798 INFO L78 Accepts]: Start accepts. Automaton has 24510 states and 30711 transitions. Word has length 129 [2021-11-07 16:44:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:32,798 INFO L470 AbstractCegarLoop]: Abstraction has 24510 states and 30711 transitions. [2021-11-07 16:44:32,798 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) [2021-11-07 16:44:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 24510 states and 30711 transitions. [2021-11-07 16:44:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 16:44:32,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:32,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:44:32,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 16:44:32,811 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)] === [2021-11-07 16:44:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash -191735279, now seen corresponding path program 1 times [2021-11-07 16:44:32,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:32,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38119504] [2021-11-07 16:44:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:32,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:44:33,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:33,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38119504] [2021-11-07 16:44:33,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38119504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:33,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:33,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:33,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756524594] [2021-11-07 16:44:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:33,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:44:33,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:44:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:33,047 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) [2021-11-07 16:44:35,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:44:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:38,333 INFO L93 Difference]: Finished difference Result 61632 states and 77368 transitions. [2021-11-07 16:44:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:38,333 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 [2021-11-07 16:44:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:38,397 INFO L225 Difference]: With dead ends: 61632 [2021-11-07 16:44:38,397 INFO L226 Difference]: Without dead ends: 37166 [2021-11-07 16:44:38,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:38,431 INFO L933 BasicCegarLoop]: 6493 mSDtfsCounter, 5016 mSDsluCounter, 5909 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2193.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5016 SdHoareTripleChecker+Valid, 12402 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2404.89ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:38,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5016 Valid, 12402 Invalid, 80 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2404.89ms Time] [2021-11-07 16:44:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37166 states. [2021-11-07 16:44:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37166 to 36088. [2021-11-07 16:44:40,992 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) [2021-11-07 16:44:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36088 states to 36088 states and 45351 transitions. [2021-11-07 16:44:41,054 INFO L78 Accepts]: Start accepts. Automaton has 36088 states and 45351 transitions. Word has length 171 [2021-11-07 16:44:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:41,054 INFO L470 AbstractCegarLoop]: Abstraction has 36088 states and 45351 transitions. [2021-11-07 16:44:41,054 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) [2021-11-07 16:44:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36088 states and 45351 transitions. [2021-11-07 16:44:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 16:44:41,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:41,071 INFO L514 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] [2021-11-07 16:44:41,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 16:44:41,071 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)] === [2021-11-07 16:44:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1300646843, now seen corresponding path program 1 times [2021-11-07 16:44:41,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:41,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219812200] [2021-11-07 16:44:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:41,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 16:44:41,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:41,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219812200] [2021-11-07 16:44:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219812200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:41,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:41,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:41,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548581840] [2021-11-07 16:44:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:41,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:44:41,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:44:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:41,382 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) [2021-11-07 16:44:43,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:44:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:47,398 INFO L93 Difference]: Finished difference Result 84660 states and 106328 transitions. [2021-11-07 16:44:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:47,399 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 [2021-11-07 16:44:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:47,475 INFO L225 Difference]: With dead ends: 84660 [2021-11-07 16:44:47,476 INFO L226 Difference]: Without dead ends: 48616 [2021-11-07 16:44:47,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:47,530 INFO L933 BasicCegarLoop]: 6337 mSDtfsCounter, 4577 mSDsluCounter, 6267 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2191.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 12604 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.18ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2387.20ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:47,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4577 Valid, 12604 Invalid, 60 Unknown, 0 Unchecked, 11.18ms Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 2387.20ms Time] [2021-11-07 16:44:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48616 states. [2021-11-07 16:44:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48616 to 47538. [2021-11-07 16:44:51,184 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) [2021-11-07 16:44:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47538 states to 47538 states and 59719 transitions. [2021-11-07 16:44:51,367 INFO L78 Accepts]: Start accepts. Automaton has 47538 states and 59719 transitions. Word has length 174 [2021-11-07 16:44:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:51,367 INFO L470 AbstractCegarLoop]: Abstraction has 47538 states and 59719 transitions. [2021-11-07 16:44:51,368 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) [2021-11-07 16:44:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 47538 states and 59719 transitions. [2021-11-07 16:44:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 16:44:51,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:51,374 INFO L514 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] [2021-11-07 16:44:51,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 16:44:51,375 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)] === [2021-11-07 16:44:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash -423741171, now seen corresponding path program 1 times [2021-11-07 16:44:51,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:51,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160368327] [2021-11-07 16:44:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:51,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:44:51,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:51,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160368327] [2021-11-07 16:44:51,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160368327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:51,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:51,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:51,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111184507] [2021-11-07 16:44:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:44:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:44:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:51,691 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) [2021-11-07 16:44:53,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:44:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:58,327 INFO L93 Difference]: Finished difference Result 99636 states and 125287 transitions. [2021-11-07 16:44:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:58,328 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 [2021-11-07 16:44:58,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:58,415 INFO L225 Difference]: With dead ends: 99636 [2021-11-07 16:44:58,415 INFO L226 Difference]: Without dead ends: 52142 [2021-11-07 16:44:58,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:58,466 INFO L933 BasicCegarLoop]: 8173 mSDtfsCounter, 3002 mSDsluCounter, 5120 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2228.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 13293 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.79ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2424.05ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:58,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3002 Valid, 13293 Invalid, 85 Unknown, 0 Unchecked, 9.79ms Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2424.05ms Time] [2021-11-07 16:44:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52142 states. [2021-11-07 16:45:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52142 to 52086. [2021-11-07 16:45:02,431 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) [2021-11-07 16:45:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52086 states to 52086 states and 65397 transitions. [2021-11-07 16:45:02,518 INFO L78 Accepts]: Start accepts. Automaton has 52086 states and 65397 transitions. Word has length 192 [2021-11-07 16:45:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:02,518 INFO L470 AbstractCegarLoop]: Abstraction has 52086 states and 65397 transitions. [2021-11-07 16:45:02,518 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) [2021-11-07 16:45:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 52086 states and 65397 transitions. [2021-11-07 16:45:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-07 16:45:02,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:02,522 INFO L514 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] [2021-11-07 16:45:02,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 16:45:02,523 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)] === [2021-11-07 16:45:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 691487055, now seen corresponding path program 1 times [2021-11-07 16:45:02,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:02,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249202071] [2021-11-07 16:45:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:02,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 16:45:02,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:02,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249202071] [2021-11-07 16:45:02,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249202071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:02,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:02,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:02,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163835651] [2021-11-07 16:45:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:02,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:02,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:02,809 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) [2021-11-07 16:45:04,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:09,344 INFO L93 Difference]: Finished difference Result 108708 states and 136595 transitions. [2021-11-07 16:45:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:09,344 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 247 [2021-11-07 16:45:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:09,442 INFO L225 Difference]: With dead ends: 108708 [2021-11-07 16:45:09,442 INFO L226 Difference]: Without dead ends: 56666 [2021-11-07 16:45:09,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:09,502 INFO L933 BasicCegarLoop]: 6551 mSDtfsCounter, 1858 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2203.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 12813 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.42ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2403.10ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:09,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 12813 Invalid, 81 Unknown, 0 Unchecked, 10.42ms Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2403.10ms Time] [2021-11-07 16:45:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56666 states.