./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:29:15,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:29:15,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:29:15,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:29:15,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:29:15,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:29:15,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:29:15,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:29:15,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:29:15,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:29:15,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:29:15,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:29:15,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:29:15,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:29:15,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:29:15,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:29:15,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:29:15,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:29:15,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:29:15,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:29:15,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:29:15,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:29:15,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:29:15,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:29:15,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:29:15,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:29:15,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:29:15,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:29:15,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:29:15,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:29:15,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:29:15,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:29:15,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:29:15,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:29:15,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:29:15,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:29:15,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:29:15,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:29:15,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:29:15,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:29:15,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:29:15,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:29:15,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:29:15,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:29:15,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:29:15,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:29:15,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:29:15,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:29:15,236 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:29:15,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:29:15,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:29:15,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:29:15,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:29:15,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:29:15,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:29:15,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:29:15,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:29:15,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:29:15,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:29:15,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:29:15,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:29:15,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:29:15,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:29:15,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:29:15,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:29:15,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:29:15,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:29:15,241 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:29:15,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:29:15,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:29:15,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:29:15,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-04 10:29:15,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:29:15,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:29:15,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:29:15,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:29:15,549 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:29:15,550 INFO L432 ainManager$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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-04 10:29:15,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c20b29b/7423be9978124f58be8e76a17c5eabe2/FLAG3e945e58a [2021-11-04 10:29:16,281 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:29:16,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-04 10:29:16,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c20b29b/7423be9978124f58be8e76a17c5eabe2/FLAG3e945e58a [2021-11-04 10:29:16,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c20b29b/7423be9978124f58be8e76a17c5eabe2 [2021-11-04 10:29:16,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:29:16,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:29:16,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:29:16,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:29:16,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:29:16,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:29:16" (1/1) ... [2021-11-04 10:29:16,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73060d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:16, skipping insertion in model container [2021-11-04 10:29:16,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:29:16" (1/1) ... [2021-11-04 10:29:16,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:29:16,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:29:19,165 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-04 10:29:19,170 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-04 10:29:19,171 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-04 10:29:19,172 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-04 10:29:19,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:29:19,220 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:29:19,462 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-04 10:29:19,463 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-04 10:29:19,463 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-04 10:29:19,463 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-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-04 10:29:19,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:29:19,710 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:29:19,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19 WrapperNode [2021-11-04 10:29:19,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:29:19,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:29:19,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:29:19,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:29:19,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:19,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:29:20,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:29:20,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:29:20,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:29:20,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:29:20,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:29:20,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:29:20,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:29:20,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (1/1) ... [2021-11-04 10:29:20,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:29:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:29:20,957 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) [2021-11-04 10:29:21,019 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 [2021-11-04 10:29:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:29:21,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:29:21,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:29:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:29:25,280 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 10:29:25,281 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 10:29:25,281 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 10:29:25,281 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:29:25,282 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:29:25,282 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:29:25,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:29:25,297 INFO L299 CfgBuilder]: Removed 3504 assume(true) statements. [2021-11-04 10:29:25,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:29:25 BoogieIcfgContainer [2021-11-04 10:29:25,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:29:25,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:29:25,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:29:25,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:29:25,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:29:16" (1/3) ... [2021-11-04 10:29:25,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4445692c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:29:25, skipping insertion in model container [2021-11-04 10:29:25,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:29:19" (2/3) ... [2021-11-04 10:29:25,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4445692c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:29:25, skipping insertion in model container [2021-11-04 10:29:25,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:29:25" (3/3) ... [2021-11-04 10:29:25,308 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-04 10:29:25,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:29:25,313 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-11-04 10:29:25,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:29:25,358 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 [2021-11-04 10:29:25,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-11-04 10:29:25,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 3325 states, 3276 states have (on average 1.3427960927960927) internal successors, (4399), 3324 states have internal predecessors, (4399), 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) [2021-11-04 10:29:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-04 10:29:25,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:29:25,412 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] [2021-11-04 10:29:25,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:29:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:29:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-04 10:29:25,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:29:25,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075414609] [2021-11-04 10:29:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:29:25,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:29:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:29:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:29:26,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:29:26,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075414609] [2021-11-04 10:29:26,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075414609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:29:26,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:29:26,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:29:26,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863852180] [2021-11-04 10:29:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:29:26,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:29:26,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:29:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:29:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:29:26,059 INFO L87 Difference]: Start difference. First operand has 3325 states, 3276 states have (on average 1.3427960927960927) internal successors, (4399), 3324 states have internal predecessors, (4399), 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 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-04 10:29:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:29:43,655 INFO L93 Difference]: Finished difference Result 9565 states and 12678 transitions. [2021-11-04 10:29:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:29:43,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-04 10:29:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:29:43,700 INFO L225 Difference]: With dead ends: 9565 [2021-11-04 10:29:43,700 INFO L226 Difference]: Without dead ends: 6084 [2021-11-04 10:29:43,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:29:43,718 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 3971 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 8302 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14731.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 8309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.76ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16764.88ms IncrementalHoareTripleChecker+Time [2021-11-04 10:29:43,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 279 Invalid, 8309 Unknown, 0 Unchecked, 57.76ms Time], IncrementalHoareTripleChecker [7 Valid, 8302 Invalid, 0 Unknown, 0 Unchecked, 16764.88ms Time] [2021-11-04 10:29:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2021-11-04 10:29:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6064. [2021-11-04 10:29:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6064 states, 6015 states have (on average 1.286783042394015) internal successors, (7740), 6063 states have internal predecessors, (7740), 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) [2021-11-04 10:29:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6064 states to 6064 states and 7740 transitions. [2021-11-04 10:29:43,960 INFO L78 Accepts]: Start accepts. Automaton has 6064 states and 7740 transitions. Word has length 45 [2021-11-04 10:29:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:29:43,961 INFO L470 AbstractCegarLoop]: Abstraction has 6064 states and 7740 transitions. [2021-11-04 10:29:43,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-04 10:29:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6064 states and 7740 transitions. [2021-11-04 10:29:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-04 10:29:43,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:29:43,970 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] [2021-11-04 10:29:43,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:29:43,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:29:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:29:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1051115891, now seen corresponding path program 1 times [2021-11-04 10:29:43,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:29:43,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439812353] [2021-11-04 10:29:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:29:43,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:29:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:29:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:29:44,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:29:44,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439812353] [2021-11-04 10:29:44,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439812353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:29:44,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:29:44,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:29:44,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927720331] [2021-11-04 10:29:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:29:44,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:29:44,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:29:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:29:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:29:44,202 INFO L87 Difference]: Start difference. First operand 6064 states and 7740 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-04 10:29:46,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:30:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:30:01,691 INFO L93 Difference]: Finished difference Result 16094 states and 20572 transitions. [2021-11-04 10:30:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:30:01,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-04 10:30:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:30:01,728 INFO L225 Difference]: With dead ends: 16094 [2021-11-04 10:30:01,729 INFO L226 Difference]: Without dead ends: 10106 [2021-11-04 10:30:01,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:01,742 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3534 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 7190 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15121.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3534 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.14ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16823.75ms IncrementalHoareTripleChecker+Time [2021-11-04 10:30:01,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3534 Valid, 0 Invalid, 7202 Unknown, 0 Unchecked, 40.14ms Time], IncrementalHoareTripleChecker [12 Valid, 7190 Invalid, 0 Unknown, 0 Unchecked, 16823.75ms Time] [2021-11-04 10:30:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10106 states. [2021-11-04 10:30:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10106 to 9534. [2021-11-04 10:30:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9534 states, 9485 states have (on average 1.293621507643648) internal successors, (12270), 9533 states have internal predecessors, (12270), 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) [2021-11-04 10:30:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9534 states to 9534 states and 12270 transitions. [2021-11-04 10:30:01,980 INFO L78 Accepts]: Start accepts. Automaton has 9534 states and 12270 transitions. Word has length 48 [2021-11-04 10:30:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:30:01,985 INFO L470 AbstractCegarLoop]: Abstraction has 9534 states and 12270 transitions. [2021-11-04 10:30:01,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-04 10:30:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 9534 states and 12270 transitions. [2021-11-04 10:30:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-04 10:30:01,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:30:01,989 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] [2021-11-04 10:30:01,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:30:01,989 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:30:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:30:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1663310419, now seen corresponding path program 1 times [2021-11-04 10:30:01,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:30:01,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285719704] [2021-11-04 10:30:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:30:01,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:30:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:30:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:30:02,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:30:02,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285719704] [2021-11-04 10:30:02,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285719704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:30:02,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:30:02,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:30:02,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667752381] [2021-11-04 10:30:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:30:02,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:30:02,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:30:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:30:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:02,206 INFO L87 Difference]: Start difference. First operand 9534 states and 12270 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-04 10:30:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:30:20,096 INFO L93 Difference]: Finished difference Result 26848 states and 34562 transitions. [2021-11-04 10:30:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:30:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-04 10:30:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:30:20,148 INFO L225 Difference]: With dead ends: 26848 [2021-11-04 10:30:20,149 INFO L226 Difference]: Without dead ends: 17390 [2021-11-04 10:30:20,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:20,164 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3401 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 8033 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15242.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.20ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 8033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17055.53ms IncrementalHoareTripleChecker+Time [2021-11-04 10:30:20,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3401 Valid, 0 Invalid, 8042 Unknown, 0 Unchecked, 28.20ms Time], IncrementalHoareTripleChecker [9 Valid, 8033 Invalid, 0 Unknown, 0 Unchecked, 17055.53ms Time] [2021-11-04 10:30:20,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17390 states. [2021-11-04 10:30:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17390 to 16002. [2021-11-04 10:30:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16002 states, 15953 states have (on average 1.2954303265843414) internal successors, (20666), 16001 states have internal predecessors, (20666), 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) [2021-11-04 10:30:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16002 states to 16002 states and 20666 transitions. [2021-11-04 10:30:20,497 INFO L78 Accepts]: Start accepts. Automaton has 16002 states and 20666 transitions. Word has length 51 [2021-11-04 10:30:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:30:20,500 INFO L470 AbstractCegarLoop]: Abstraction has 16002 states and 20666 transitions. [2021-11-04 10:30:20,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-04 10:30:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 16002 states and 20666 transitions. [2021-11-04 10:30:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 10:30:20,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:30:20,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:30:20,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:30:20,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:30:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:30:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-04 10:30:20,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:30:20,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750848362] [2021-11-04 10:30:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:30:20,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:30:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:30:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:30:20,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:30:20,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750848362] [2021-11-04 10:30:20,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750848362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:30:20,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:30:20,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:30:20,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410283175] [2021-11-04 10:30:20,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:30:20,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:30:20,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:30:20,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:30:20,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:20,671 INFO L87 Difference]: Start difference. First operand 16002 states and 20666 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 10:30:23,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:30:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:30:43,017 INFO L93 Difference]: Finished difference Result 31940 states and 41269 transitions. [2021-11-04 10:30:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:30:43,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-04 10:30:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:30:43,072 INFO L225 Difference]: With dead ends: 31940 [2021-11-04 10:30:43,073 INFO L226 Difference]: Without dead ends: 23810 [2021-11-04 10:30:43,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:43,094 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3724 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 11765 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19264.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.95ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21477.43ms IncrementalHoareTripleChecker+Time [2021-11-04 10:30:43,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 0 Invalid, 11770 Unknown, 0 Unchecked, 31.95ms Time], IncrementalHoareTripleChecker [5 Valid, 11765 Invalid, 0 Unknown, 0 Unchecked, 21477.43ms Time] [2021-11-04 10:30:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23810 states. [2021-11-04 10:30:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23810 to 23790. [2021-11-04 10:30:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23790 states, 23741 states have (on average 1.2959858472684385) internal successors, (30768), 23789 states have internal predecessors, (30768), 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) [2021-11-04 10:30:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23790 states to 23790 states and 30768 transitions. [2021-11-04 10:30:43,513 INFO L78 Accepts]: Start accepts. Automaton has 23790 states and 30768 transitions. Word has length 74 [2021-11-04 10:30:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:30:43,514 INFO L470 AbstractCegarLoop]: Abstraction has 23790 states and 30768 transitions. [2021-11-04 10:30:43,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 10:30:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 23790 states and 30768 transitions. [2021-11-04 10:30:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 10:30:43,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:30:43,518 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:30:43,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:30:43,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:30:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:30:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-04 10:30:43,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:30:43,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214340984] [2021-11-04 10:30:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:30:43,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:30:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:30:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:30:43,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:30:43,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214340984] [2021-11-04 10:30:43,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214340984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:30:43,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:30:43,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:30:43,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794060249] [2021-11-04 10:30:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:30:43,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:30:43,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:30:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:30:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:43,678 INFO L87 Difference]: Start difference. First operand 23790 states and 30768 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 10:30:45,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:30:46,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:31:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:31:07,834 INFO L93 Difference]: Finished difference Result 47520 states and 61481 transitions. [2021-11-04 10:31:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:31:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-04 10:31:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:31:07,913 INFO L225 Difference]: With dead ends: 47520 [2021-11-04 10:31:07,914 INFO L226 Difference]: Without dead ends: 31602 [2021-11-04 10:31:07,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:31:07,954 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3774 mSDsluCounter, 3949 mSDsCounter, 0 mSdLazyCounter, 11717 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20990.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3774 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.35ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23223.83ms IncrementalHoareTripleChecker+Time [2021-11-04 10:31:07,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3774 Valid, 0 Invalid, 11723 Unknown, 0 Unchecked, 39.35ms Time], IncrementalHoareTripleChecker [6 Valid, 11717 Invalid, 0 Unknown, 0 Unchecked, 23223.83ms Time] [2021-11-04 10:31:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31602 states. [2021-11-04 10:31:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31602 to 31561. [2021-11-04 10:31:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31561 states, 31512 states have (on average 1.2964267580604214) internal successors, (40853), 31560 states have internal predecessors, (40853), 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) [2021-11-04 10:31:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31561 states to 31561 states and 40853 transitions. [2021-11-04 10:31:08,594 INFO L78 Accepts]: Start accepts. Automaton has 31561 states and 40853 transitions. Word has length 74 [2021-11-04 10:31:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:31:08,594 INFO L470 AbstractCegarLoop]: Abstraction has 31561 states and 40853 transitions. [2021-11-04 10:31:08,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 10:31:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 31561 states and 40853 transitions. [2021-11-04 10:31:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 10:31:08,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:31:08,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:31:08,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:31:08,598 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:31:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:31:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-04 10:31:08,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:31:08,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029218114] [2021-11-04 10:31:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:31:08,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:31:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:31:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:31:08,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:31:08,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029218114] [2021-11-04 10:31:08,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029218114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:31:08,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:31:08,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:31:08,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718311385] [2021-11-04 10:31:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:31:08,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:31:08,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:31:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:31:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:31:08,803 INFO L87 Difference]: Start difference. First operand 31561 states and 40853 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-04 10:31:11,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:31:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:31:24,788 INFO L93 Difference]: Finished difference Result 31561 states and 40853 transitions. [2021-11-04 10:31:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:31:24,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 75 [2021-11-04 10:31:24,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:31:24,850 INFO L225 Difference]: With dead ends: 31561 [2021-11-04 10:31:24,851 INFO L226 Difference]: Without dead ends: 31555 [2021-11-04 10:31:24,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:31:24,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3958 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 7997 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13813.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.14ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 7997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15288.02ms IncrementalHoareTripleChecker+Time [2021-11-04 10:31:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3958 Valid, 0 Invalid, 8034 Unknown, 0 Unchecked, 61.14ms Time], IncrementalHoareTripleChecker [37 Valid, 7997 Invalid, 0 Unknown, 0 Unchecked, 15288.02ms Time] [2021-11-04 10:31:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31555 states. [2021-11-04 10:31:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31555 to 31555. [2021-11-04 10:31:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31555 states, 31509 states have (on average 1.2963597702243803) internal successors, (40847), 31554 states have internal predecessors, (40847), 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) [2021-11-04 10:31:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31555 states to 31555 states and 40847 transitions. [2021-11-04 10:31:25,471 INFO L78 Accepts]: Start accepts. Automaton has 31555 states and 40847 transitions. Word has length 75 [2021-11-04 10:31:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:31:25,472 INFO L470 AbstractCegarLoop]: Abstraction has 31555 states and 40847 transitions. [2021-11-04 10:31:25,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-04 10:31:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 31555 states and 40847 transitions. [2021-11-04 10:31:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 10:31:25,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:31:25,475 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:31:25,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 10:31:25,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:31:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:31:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-04 10:31:25,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:31:25,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199084441] [2021-11-04 10:31:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:31:25,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:31:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:31:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:31:25,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:31:25,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199084441] [2021-11-04 10:31:25,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199084441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:31:25,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:31:25,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:31:25,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013422582] [2021-11-04 10:31:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:31:25,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:31:25,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:31:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:31:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:31:25,758 INFO L87 Difference]: Start difference. First operand 31555 states and 40847 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-04 10:31:26,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:31:29,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:31:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:31:42,969 INFO L93 Difference]: Finished difference Result 31555 states and 40847 transitions. [2021-11-04 10:31:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:31:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 77 [2021-11-04 10:31:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:31:43,034 INFO L225 Difference]: With dead ends: 31555 [2021-11-04 10:31:43,034 INFO L226 Difference]: Without dead ends: 31549 [2021-11-04 10:31:43,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:31:43,057 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3947 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 7984 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14966.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.33ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7984 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16466.02ms IncrementalHoareTripleChecker+Time [2021-11-04 10:31:43,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3947 Valid, 0 Invalid, 8025 Unknown, 0 Unchecked, 48.33ms Time], IncrementalHoareTripleChecker [40 Valid, 7984 Invalid, 1 Unknown, 0 Unchecked, 16466.02ms Time] [2021-11-04 10:31:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31549 states. [2021-11-04 10:31:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31549 to 31549. [2021-11-04 10:31:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31549 states, 31506 states have (on average 1.2962927696311815) internal successors, (40841), 31548 states have internal predecessors, (40841), 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) [2021-11-04 10:31:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31549 states to 31549 states and 40841 transitions. [2021-11-04 10:31:43,859 INFO L78 Accepts]: Start accepts. Automaton has 31549 states and 40841 transitions. Word has length 77 [2021-11-04 10:31:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:31:43,860 INFO L470 AbstractCegarLoop]: Abstraction has 31549 states and 40841 transitions. [2021-11-04 10:31:43,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-04 10:31:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 31549 states and 40841 transitions. [2021-11-04 10:31:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 10:31:43,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:31:43,863 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:31:43,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 10:31:43,863 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:31:43,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:31:43,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1489100207, now seen corresponding path program 1 times [2021-11-04 10:31:43,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:31:43,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645144655] [2021-11-04 10:31:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:31:43,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:31:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:31:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:31:44,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:31:44,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645144655] [2021-11-04 10:31:44,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645144655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:31:44,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:31:44,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:31:44,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214859072] [2021-11-04 10:31:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:31:44,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:31:44,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:31:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:31:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:31:44,039 INFO L87 Difference]: Start difference. First operand 31549 states and 40841 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-04 10:31:47,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:32:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:32:00,559 INFO L93 Difference]: Finished difference Result 31549 states and 40841 transitions. [2021-11-04 10:32:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:32:00,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 79 [2021-11-04 10:32:00,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:32:00,614 INFO L225 Difference]: With dead ends: 31549 [2021-11-04 10:32:00,614 INFO L226 Difference]: Without dead ends: 31543 [2021-11-04 10:32:00,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:32:00,625 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3939 mSDsluCounter, 3901 mSDsCounter, 0 mSdLazyCounter, 7972 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14107.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.39ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15602.01ms IncrementalHoareTripleChecker+Time [2021-11-04 10:32:00,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3939 Valid, 0 Invalid, 8013 Unknown, 0 Unchecked, 40.39ms Time], IncrementalHoareTripleChecker [40 Valid, 7972 Invalid, 1 Unknown, 0 Unchecked, 15602.01ms Time] [2021-11-04 10:32:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31543 states. [2021-11-04 10:32:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31543 to 31543. [2021-11-04 10:32:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31543 states, 31503 states have (on average 1.29622575627718) internal successors, (40835), 31542 states have internal predecessors, (40835), 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) [2021-11-04 10:32:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31543 states to 31543 states and 40835 transitions. [2021-11-04 10:32:01,249 INFO L78 Accepts]: Start accepts. Automaton has 31543 states and 40835 transitions. Word has length 79 [2021-11-04 10:32:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:32:01,250 INFO L470 AbstractCegarLoop]: Abstraction has 31543 states and 40835 transitions. [2021-11-04 10:32:01,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-04 10:32:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31543 states and 40835 transitions. [2021-11-04 10:32:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-04 10:32:01,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:32:01,254 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:32:01,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 10:32:01,254 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:32:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:32:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash 801337458, now seen corresponding path program 1 times [2021-11-04 10:32:01,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:32:01,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276527149] [2021-11-04 10:32:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:32:01,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:32:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:32:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:32:01,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:32:01,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276527149] [2021-11-04 10:32:01,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276527149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:32:01,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:32:01,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:32:01,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138179550] [2021-11-04 10:32:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:32:01,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:32:01,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:32:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:32:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:32:01,428 INFO L87 Difference]: Start difference. First operand 31543 states and 40835 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-04 10:32:02,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:32:04,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:32:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:32:18,356 INFO L93 Difference]: Finished difference Result 31543 states and 40835 transitions. [2021-11-04 10:32:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:32:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 81 [2021-11-04 10:32:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:32:18,415 INFO L225 Difference]: With dead ends: 31543 [2021-11-04 10:32:18,415 INFO L226 Difference]: Without dead ends: 31537 [2021-11-04 10:32:18,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:32:18,431 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3931 mSDsluCounter, 3898 mSDsCounter, 0 mSdLazyCounter, 7960 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14527.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3931 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.21ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7960 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16030.19ms IncrementalHoareTripleChecker+Time [2021-11-04 10:32:18,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3931 Valid, 0 Invalid, 8001 Unknown, 0 Unchecked, 40.21ms Time], IncrementalHoareTripleChecker [40 Valid, 7960 Invalid, 1 Unknown, 0 Unchecked, 16030.19ms Time] [2021-11-04 10:32:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31537 states. [2021-11-04 10:32:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31537 to 31537. [2021-11-04 10:32:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31537 states, 31500 states have (on average 1.29615873015873) internal successors, (40829), 31536 states have internal predecessors, (40829), 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) [2021-11-04 10:32:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31537 states to 31537 states and 40829 transitions. [2021-11-04 10:32:19,270 INFO L78 Accepts]: Start accepts. Automaton has 31537 states and 40829 transitions. Word has length 81 [2021-11-04 10:32:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:32:19,270 INFO L470 AbstractCegarLoop]: Abstraction has 31537 states and 40829 transitions. [2021-11-04 10:32:19,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-04 10:32:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 31537 states and 40829 transitions. [2021-11-04 10:32:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 10:32:19,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:32:19,274 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:32:19,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 10:32:19,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:32:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:32:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1286299573, now seen corresponding path program 1 times [2021-11-04 10:32:19,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:32:19,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936402286] [2021-11-04 10:32:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:32:19,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:32:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:32:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:32:19,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:32:19,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936402286] [2021-11-04 10:32:19,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936402286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:32:19,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:32:19,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:32:19,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487514603] [2021-11-04 10:32:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:32:19,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:32:19,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:32:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:32:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:32:19,439 INFO L87 Difference]: Start difference. First operand 31537 states and 40829 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 10:32:20,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:32:22,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:32:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:32:36,288 INFO L93 Difference]: Finished difference Result 31537 states and 40829 transitions. [2021-11-04 10:32:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:32:36,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 83 [2021-11-04 10:32:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:32:36,343 INFO L225 Difference]: With dead ends: 31537 [2021-11-04 10:32:36,343 INFO L226 Difference]: Without dead ends: 31531 [2021-11-04 10:32:36,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:32:36,354 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3923 mSDsluCounter, 3895 mSDsCounter, 0 mSdLazyCounter, 7948 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14308.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3923 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.57ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15902.87ms IncrementalHoareTripleChecker+Time [2021-11-04 10:32:36,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3923 Valid, 0 Invalid, 7989 Unknown, 0 Unchecked, 39.57ms Time], IncrementalHoareTripleChecker [40 Valid, 7948 Invalid, 1 Unknown, 0 Unchecked, 15902.87ms Time] [2021-11-04 10:32:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2021-11-04 10:32:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 31531. [2021-11-04 10:32:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31531 states, 31497 states have (on average 1.2960916912721847) internal successors, (40823), 31530 states have internal predecessors, (40823), 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) [2021-11-04 10:32:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31531 states to 31531 states and 40823 transitions. [2021-11-04 10:32:37,081 INFO L78 Accepts]: Start accepts. Automaton has 31531 states and 40823 transitions. Word has length 83 [2021-11-04 10:32:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:32:37,081 INFO L470 AbstractCegarLoop]: Abstraction has 31531 states and 40823 transitions. [2021-11-04 10:32:37,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 10:32:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 31531 states and 40823 transitions. [2021-11-04 10:32:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-04 10:32:37,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:32:37,085 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:32:37,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 10:32:37,086 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:32:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:32:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash -816542856, now seen corresponding path program 1 times [2021-11-04 10:32:37,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:32:37,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100882333] [2021-11-04 10:32:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:32:37,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:32:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:32:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:32:37,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:32:37,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100882333] [2021-11-04 10:32:37,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100882333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:32:37,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:32:37,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:32:37,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672748728] [2021-11-04 10:32:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:32:37,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:32:37,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:32:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:32:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:32:37,297 INFO L87 Difference]: Start difference. First operand 31531 states and 40823 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-04 10:32:39,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:32:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:32:52,288 INFO L93 Difference]: Finished difference Result 31531 states and 40823 transitions. [2021-11-04 10:32:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:32:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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 85 [2021-11-04 10:32:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:32:52,351 INFO L225 Difference]: With dead ends: 31531 [2021-11-04 10:32:52,351 INFO L226 Difference]: Without dead ends: 31525 [2021-11-04 10:32:52,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:32:52,368 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3915 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 7935 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12743.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.54ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14045.00ms IncrementalHoareTripleChecker+Time [2021-11-04 10:32:52,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3915 Valid, 0 Invalid, 7976 Unknown, 0 Unchecked, 35.54ms Time], IncrementalHoareTripleChecker [40 Valid, 7935 Invalid, 1 Unknown, 0 Unchecked, 14045.00ms Time] [2021-11-04 10:32:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31525 states. [2021-11-04 10:32:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31525 to 31525. [2021-11-04 10:32:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31525 states, 31494 states have (on average 1.2960246396138948) internal successors, (40817), 31524 states have internal predecessors, (40817), 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) [2021-11-04 10:32:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31525 states to 31525 states and 40817 transitions. [2021-11-04 10:32:53,242 INFO L78 Accepts]: Start accepts. Automaton has 31525 states and 40817 transitions. Word has length 85 [2021-11-04 10:32:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:32:53,242 INFO L470 AbstractCegarLoop]: Abstraction has 31525 states and 40817 transitions. [2021-11-04 10:32:53,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-04 10:32:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31525 states and 40817 transitions. [2021-11-04 10:32:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-04 10:32:53,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:32:53,247 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:32:53,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 10:32:53,247 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:32:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:32:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1281479611, now seen corresponding path program 1 times [2021-11-04 10:32:53,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:32:53,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791719469] [2021-11-04 10:32:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:32:53,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:32:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:32:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:32:53,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:32:53,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791719469] [2021-11-04 10:32:53,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791719469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:32:53,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:32:53,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:32:53,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643038809] [2021-11-04 10:32:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:32:53,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:32:53,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:32:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:32:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:32:53,396 INFO L87 Difference]: Start difference. First operand 31525 states and 40817 transitions. Second operand has 4 states, 4 states have (on average 19.5) 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) [2021-11-04 10:32:55,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:33:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:33:09,719 INFO L93 Difference]: Finished difference Result 31525 states and 40817 transitions. [2021-11-04 10:33:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:33:09,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) 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 87 [2021-11-04 10:33:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:33:09,773 INFO L225 Difference]: With dead ends: 31525 [2021-11-04 10:33:09,774 INFO L226 Difference]: Without dead ends: 31519 [2021-11-04 10:33:09,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:33:09,791 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3827 mSDsluCounter, 3945 mSDsCounter, 0 mSdLazyCounter, 8001 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13751.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.32ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 8001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15316.53ms IncrementalHoareTripleChecker+Time [2021-11-04 10:33:09,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3827 Valid, 0 Invalid, 8045 Unknown, 0 Unchecked, 37.32ms Time], IncrementalHoareTripleChecker [44 Valid, 8001 Invalid, 0 Unknown, 0 Unchecked, 15316.53ms Time] [2021-11-04 10:33:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31519 states. [2021-11-04 10:33:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31519 to 31519. [2021-11-04 10:33:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31519 states, 31491 states have (on average 1.2959575751802102) internal successors, (40811), 31518 states have internal predecessors, (40811), 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) [2021-11-04 10:33:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31519 states to 31519 states and 40811 transitions. [2021-11-04 10:33:10,712 INFO L78 Accepts]: Start accepts. Automaton has 31519 states and 40811 transitions. Word has length 87 [2021-11-04 10:33:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:33:10,712 INFO L470 AbstractCegarLoop]: Abstraction has 31519 states and 40811 transitions. [2021-11-04 10:33:10,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) 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) [2021-11-04 10:33:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 31519 states and 40811 transitions. [2021-11-04 10:33:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 10:33:10,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:33:10,718 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:33:10,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 10:33:10,718 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:33:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:33:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1153558402, now seen corresponding path program 1 times [2021-11-04 10:33:10,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:33:10,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854941286] [2021-11-04 10:33:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:33:10,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:33:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:33:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:33:10,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:33:10,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854941286] [2021-11-04 10:33:10,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854941286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:33:10,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:33:10,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:33:10,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627469868] [2021-11-04 10:33:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:33:10,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:33:10,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:33:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:33:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:33:10,870 INFO L87 Difference]: Start difference. First operand 31519 states and 40811 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-04 10:33:12,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:33:14,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:33:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:33:27,324 INFO L93 Difference]: Finished difference Result 31519 states and 40811 transitions. [2021-11-04 10:33:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:33:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 89 [2021-11-04 10:33:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:33:27,382 INFO L225 Difference]: With dead ends: 31519 [2021-11-04 10:33:27,382 INFO L226 Difference]: Without dead ends: 31513 [2021-11-04 10:33:27,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:33:27,396 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3899 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 7912 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14012.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3899 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.84ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15449.61ms IncrementalHoareTripleChecker+Time [2021-11-04 10:33:27,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3899 Valid, 0 Invalid, 7953 Unknown, 0 Unchecked, 30.84ms Time], IncrementalHoareTripleChecker [40 Valid, 7912 Invalid, 1 Unknown, 0 Unchecked, 15449.61ms Time] [2021-11-04 10:33:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31513 states. [2021-11-04 10:33:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31513 to 31513. [2021-11-04 10:33:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31513 states, 31488 states have (on average 1.2958904979674797) internal successors, (40805), 31512 states have internal predecessors, (40805), 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) [2021-11-04 10:33:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31513 states to 31513 states and 40805 transitions. [2021-11-04 10:33:28,420 INFO L78 Accepts]: Start accepts. Automaton has 31513 states and 40805 transitions. Word has length 89 [2021-11-04 10:33:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:33:28,421 INFO L470 AbstractCegarLoop]: Abstraction has 31513 states and 40805 transitions. [2021-11-04 10:33:28,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-04 10:33:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 31513 states and 40805 transitions. [2021-11-04 10:33:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-04 10:33:28,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:33:28,426 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:33:28,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 10:33:28,426 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:33:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:33:28,426 INFO L85 PathProgramCache]: Analyzing trace with hash -467912255, now seen corresponding path program 1 times [2021-11-04 10:33:28,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:33:28,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882734323] [2021-11-04 10:33:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:33:28,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:33:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:33:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:33:28,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:33:28,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882734323] [2021-11-04 10:33:28,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882734323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:33:28,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:33:28,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:33:28,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544144229] [2021-11-04 10:33:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:33:28,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:33:28,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:33:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:33:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:33:28,609 INFO L87 Difference]: Start difference. First operand 31513 states and 40805 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-04 10:33:30,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:33:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:33:45,251 INFO L93 Difference]: Finished difference Result 31513 states and 40805 transitions. [2021-11-04 10:33:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:33:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 91 [2021-11-04 10:33:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:33:45,310 INFO L225 Difference]: With dead ends: 31513 [2021-11-04 10:33:45,311 INFO L226 Difference]: Without dead ends: 31507 [2021-11-04 10:33:45,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:33:45,331 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3866 mSDsluCounter, 3901 mSDsCounter, 0 mSdLazyCounter, 7923 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14044.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3866 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.24ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 7923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15525.23ms IncrementalHoareTripleChecker+Time [2021-11-04 10:33:45,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3866 Valid, 0 Invalid, 7965 Unknown, 0 Unchecked, 37.24ms Time], IncrementalHoareTripleChecker [41 Valid, 7923 Invalid, 1 Unknown, 0 Unchecked, 15525.23ms Time] [2021-11-04 10:33:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31507 states. [2021-11-04 10:33:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31507 to 31507. [2021-11-04 10:33:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31507 states, 31485 states have (on average 1.29582340797205) internal successors, (40799), 31506 states have internal predecessors, (40799), 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) [2021-11-04 10:33:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31507 states to 31507 states and 40799 transitions. [2021-11-04 10:33:46,321 INFO L78 Accepts]: Start accepts. Automaton has 31507 states and 40799 transitions. Word has length 91 [2021-11-04 10:33:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:33:46,321 INFO L470 AbstractCegarLoop]: Abstraction has 31507 states and 40799 transitions. [2021-11-04 10:33:46,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-04 10:33:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 31507 states and 40799 transitions. [2021-11-04 10:33:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-04 10:33:46,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:33:46,330 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:33:46,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 10:33:46,331 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:33:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:33:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1308039044, now seen corresponding path program 1 times [2021-11-04 10:33:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:33:46,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856172187] [2021-11-04 10:33:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:33:46,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:33:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:33:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:33:46,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:33:46,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856172187] [2021-11-04 10:33:46,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856172187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:33:46,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:33:46,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:33:46,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112361658] [2021-11-04 10:33:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:33:46,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:33:46,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:33:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:33:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:33:46,479 INFO L87 Difference]: Start difference. First operand 31507 states and 40799 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-04 10:33:49,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:34:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:34:04,005 INFO L93 Difference]: Finished difference Result 31507 states and 40799 transitions. [2021-11-04 10:34:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:34:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 93 [2021-11-04 10:34:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:34:04,065 INFO L225 Difference]: With dead ends: 31507 [2021-11-04 10:34:04,065 INFO L226 Difference]: Without dead ends: 31501 [2021-11-04 10:34:04,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:34:04,082 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3883 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 7888 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14777.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.99ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16379.69ms IncrementalHoareTripleChecker+Time [2021-11-04 10:34:04,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3883 Valid, 0 Invalid, 7929 Unknown, 0 Unchecked, 35.99ms Time], IncrementalHoareTripleChecker [40 Valid, 7888 Invalid, 1 Unknown, 0 Unchecked, 16379.69ms Time] [2021-11-04 10:34:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31501 states. [2021-11-04 10:34:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31501 to 31501. [2021-11-04 10:34:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 31482 states have (on average 1.2957563051902674) internal successors, (40793), 31500 states have internal predecessors, (40793), 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) [2021-11-04 10:34:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 40793 transitions. [2021-11-04 10:34:05,092 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 40793 transitions. Word has length 93 [2021-11-04 10:34:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:34:05,093 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 40793 transitions. [2021-11-04 10:34:05,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-04 10:34:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 40793 transitions. [2021-11-04 10:34:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 10:34:05,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:34:05,097 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:34:05,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 10:34:05,098 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:34:05,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:34:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1399746105, now seen corresponding path program 1 times [2021-11-04 10:34:05,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:34:05,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301786419] [2021-11-04 10:34:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:34:05,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:34:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:34:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:34:05,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:34:05,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301786419] [2021-11-04 10:34:05,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301786419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:34:05,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:34:05,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:34:05,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842814451] [2021-11-04 10:34:05,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:34:05,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:34:05,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:34:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:34:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:34:05,257 INFO L87 Difference]: Start difference. First operand 31501 states and 40793 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-04 10:34:06,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:34:08,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:34:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:34:22,766 INFO L93 Difference]: Finished difference Result 31501 states and 40793 transitions. [2021-11-04 10:34:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:34:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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 95 [2021-11-04 10:34:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:34:22,818 INFO L225 Difference]: With dead ends: 31501 [2021-11-04 10:34:22,818 INFO L226 Difference]: Without dead ends: 31495 [2021-11-04 10:34:22,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:34:22,828 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3875 mSDsluCounter, 3877 mSDsCounter, 0 mSdLazyCounter, 7877 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14731.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.04ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16317.96ms IncrementalHoareTripleChecker+Time [2021-11-04 10:34:22,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3875 Valid, 0 Invalid, 7917 Unknown, 0 Unchecked, 34.04ms Time], IncrementalHoareTripleChecker [40 Valid, 7877 Invalid, 0 Unknown, 0 Unchecked, 16317.96ms Time] [2021-11-04 10:34:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31495 states. [2021-11-04 10:34:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31495 to 31495. [2021-11-04 10:34:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31495 states, 31479 states have (on average 1.295689189618476) internal successors, (40787), 31494 states have internal predecessors, (40787), 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) [2021-11-04 10:34:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31495 states to 31495 states and 40787 transitions. [2021-11-04 10:34:23,888 INFO L78 Accepts]: Start accepts. Automaton has 31495 states and 40787 transitions. Word has length 95 [2021-11-04 10:34:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:34:23,889 INFO L470 AbstractCegarLoop]: Abstraction has 31495 states and 40787 transitions. [2021-11-04 10:34:23,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-04 10:34:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 31495 states and 40787 transitions. [2021-11-04 10:34:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 10:34:23,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:34:23,894 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:34:23,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 10:34:23,894 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:34:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:34:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -831092598, now seen corresponding path program 1 times [2021-11-04 10:34:23,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:34:23,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507730914] [2021-11-04 10:34:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:34:23,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:34:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:34:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:34:24,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:34:24,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507730914] [2021-11-04 10:34:24,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507730914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:34:24,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:34:24,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:34:24,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401368039] [2021-11-04 10:34:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:34:24,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:34:24,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:34:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:34:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:34:24,063 INFO L87 Difference]: Start difference. First operand 31495 states and 40787 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-04 10:34:25,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:34:27,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:34:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:34:41,448 INFO L93 Difference]: Finished difference Result 31495 states and 40787 transitions. [2021-11-04 10:34:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:34:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 97 [2021-11-04 10:34:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:34:41,505 INFO L225 Difference]: With dead ends: 31495 [2021-11-04 10:34:41,506 INFO L226 Difference]: Without dead ends: 31489 [2021-11-04 10:34:41,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:34:41,521 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3867 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 7865 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14482.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3867 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.47ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16130.89ms IncrementalHoareTripleChecker+Time [2021-11-04 10:34:41,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3867 Valid, 0 Invalid, 7905 Unknown, 0 Unchecked, 31.47ms Time], IncrementalHoareTripleChecker [40 Valid, 7865 Invalid, 0 Unknown, 0 Unchecked, 16130.89ms Time] [2021-11-04 10:34:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31489 states. [2021-11-04 10:34:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31489 to 31489. [2021-11-04 10:34:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31489 states, 31476 states have (on average 1.2956220612530183) internal successors, (40781), 31488 states have internal predecessors, (40781), 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) [2021-11-04 10:34:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31489 states to 31489 states and 40781 transitions. [2021-11-04 10:34:42,636 INFO L78 Accepts]: Start accepts. Automaton has 31489 states and 40781 transitions. Word has length 97 [2021-11-04 10:34:42,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:34:42,636 INFO L470 AbstractCegarLoop]: Abstraction has 31489 states and 40781 transitions. [2021-11-04 10:34:42,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-04 10:34:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 31489 states and 40781 transitions. [2021-11-04 10:34:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 10:34:42,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:34:42,641 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:34:42,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 10:34:42,642 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:34:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:34:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 646095019, now seen corresponding path program 1 times [2021-11-04 10:34:42,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:34:42,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671869525] [2021-11-04 10:34:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:34:42,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:34:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:34:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:34:42,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:34:42,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671869525] [2021-11-04 10:34:42,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671869525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:34:42,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:34:42,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:34:42,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60376109] [2021-11-04 10:34:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:34:42,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:34:42,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:34:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:34:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:34:42,779 INFO L87 Difference]: Start difference. First operand 31489 states and 40781 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) 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) [2021-11-04 10:34:45,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:35:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:35:01,928 INFO L93 Difference]: Finished difference Result 60683 states and 78795 transitions. [2021-11-04 10:35:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:35:01,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) 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 97 [2021-11-04 10:35:01,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:35:01,982 INFO L225 Difference]: With dead ends: 60683 [2021-11-04 10:35:01,982 INFO L226 Difference]: Without dead ends: 29270 [2021-11-04 10:35:02,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:35:02,014 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1163 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 8761 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15782.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.80ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17521.71ms IncrementalHoareTripleChecker+Time [2021-11-04 10:35:02,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 0 Invalid, 8782 Unknown, 0 Unchecked, 27.80ms Time], IncrementalHoareTripleChecker [21 Valid, 8761 Invalid, 0 Unknown, 0 Unchecked, 17521.71ms Time] [2021-11-04 10:35:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29270 states. [2021-11-04 10:35:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29270 to 29185. [2021-11-04 10:35:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29185 states, 29172 states have (on average 1.2963458110516934) internal successors, (37817), 29184 states have internal predecessors, (37817), 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) [2021-11-04 10:35:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29185 states to 29185 states and 37817 transitions. [2021-11-04 10:35:03,079 INFO L78 Accepts]: Start accepts. Automaton has 29185 states and 37817 transitions. Word has length 97 [2021-11-04 10:35:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:35:03,079 INFO L470 AbstractCegarLoop]: Abstraction has 29185 states and 37817 transitions. [2021-11-04 10:35:03,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) 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) [2021-11-04 10:35:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 29185 states and 37817 transitions. [2021-11-04 10:35:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-04 10:35:03,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:35:03,083 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:35:03,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 10:35:03,084 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:35:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:35:03,084 INFO L85 PathProgramCache]: Analyzing trace with hash 184081357, now seen corresponding path program 1 times [2021-11-04 10:35:03,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:35:03,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186297881] [2021-11-04 10:35:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:35:03,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:35:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:35:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:35:03,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:35:03,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186297881] [2021-11-04 10:35:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186297881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:35:03,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:35:03,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:35:03,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251656918] [2021-11-04 10:35:03,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:35:03,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:35:03,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:35:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:35:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:35:03,224 INFO L87 Difference]: Start difference. First operand 29185 states and 37817 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-04 10:35:05,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:35:06,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:35:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:35:19,990 INFO L93 Difference]: Finished difference Result 29185 states and 37817 transitions. [2021-11-04 10:35:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:35:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 99 [2021-11-04 10:35:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:35:20,043 INFO L225 Difference]: With dead ends: 29185 [2021-11-04 10:35:20,043 INFO L226 Difference]: Without dead ends: 28979 [2021-11-04 10:35:20,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:35:20,058 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3856 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 7853 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13939.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.55ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15509.84ms IncrementalHoareTripleChecker+Time [2021-11-04 10:35:20,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3856 Valid, 0 Invalid, 7896 Unknown, 0 Unchecked, 34.55ms Time], IncrementalHoareTripleChecker [43 Valid, 7853 Invalid, 0 Unknown, 0 Unchecked, 15509.84ms Time] [2021-11-04 10:35:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28979 states. [2021-11-04 10:35:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28979 to 28979. [2021-11-04 10:35:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28979 states, 28969 states have (on average 1.296247713072595) internal successors, (37551), 28978 states have internal predecessors, (37551), 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) [2021-11-04 10:35:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28979 states to 28979 states and 37551 transitions. [2021-11-04 10:35:21,124 INFO L78 Accepts]: Start accepts. Automaton has 28979 states and 37551 transitions. Word has length 99 [2021-11-04 10:35:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:35:21,125 INFO L470 AbstractCegarLoop]: Abstraction has 28979 states and 37551 transitions. [2021-11-04 10:35:21,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-04 10:35:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 28979 states and 37551 transitions. [2021-11-04 10:35:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-04 10:35:21,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:35:21,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-04 10:35:21,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-04 10:35:21,132 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:35:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:35:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash -242047824, now seen corresponding path program 1 times [2021-11-04 10:35:21,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:35:21,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693299463] [2021-11-04 10:35:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:35:21,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:35:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:35:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:35:21,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:35:21,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693299463] [2021-11-04 10:35:21,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693299463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:35:21,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:35:21,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:35:21,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954778213] [2021-11-04 10:35:21,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:35:21,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:35:21,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:35:21,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:35:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:35:21,282 INFO L87 Difference]: Start difference. First operand 28979 states and 37551 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-04 10:35:22,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:35:23,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:35:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:35:39,746 INFO L93 Difference]: Finished difference Result 63202 states and 82096 transitions. [2021-11-04 10:35:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:35:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 [2021-11-04 10:35:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:35:39,811 INFO L225 Difference]: With dead ends: 63202 [2021-11-04 10:35:39,812 INFO L226 Difference]: Without dead ends: 34397 [2021-11-04 10:35:39,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:35:39,850 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1070 mSDsluCounter, 3783 mSDsCounter, 0 mSdLazyCounter, 8768 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15071.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.41ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 8768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16774.08ms IncrementalHoareTripleChecker+Time [2021-11-04 10:35:39,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 0 Invalid, 8783 Unknown, 0 Unchecked, 27.41ms Time], IncrementalHoareTripleChecker [15 Valid, 8768 Invalid, 0 Unknown, 0 Unchecked, 16774.08ms Time] [2021-11-04 10:35:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34397 states. [2021-11-04 10:35:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34397 to 34361. [2021-11-04 10:35:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34361 states, 34351 states have (on average 1.2968181421210445) internal successors, (44547), 34360 states have internal predecessors, (44547), 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) [2021-11-04 10:35:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34361 states to 34361 states and 44547 transitions. [2021-11-04 10:35:41,191 INFO L78 Accepts]: Start accepts. Automaton has 34361 states and 44547 transitions. Word has length 129 [2021-11-04 10:35:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:35:41,191 INFO L470 AbstractCegarLoop]: Abstraction has 34361 states and 44547 transitions. [2021-11-04 10:35:41,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-04 10:35:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 34361 states and 44547 transitions. [2021-11-04 10:35:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-04 10:35:41,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:35:41,199 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-04 10:35:41,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 10:35:41,199 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:35:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:35:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1927563945, now seen corresponding path program 1 times [2021-11-04 10:35:41,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:35:41,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52317353] [2021-11-04 10:35:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:35:41,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:35:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:35:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 10:35:41,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:35:41,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52317353] [2021-11-04 10:35:41,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52317353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:35:41,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:35:41,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:35:41,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956902197] [2021-11-04 10:35:41,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:35:41,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:35:41,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:35:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:35:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:35:41,341 INFO L87 Difference]: Start difference. First operand 34361 states and 44547 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-04 10:35:43,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:36:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:36:00,409 INFO L93 Difference]: Finished difference Result 73918 states and 95992 transitions. [2021-11-04 10:36:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:36:00,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 166 [2021-11-04 10:36:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:36:00,479 INFO L225 Difference]: With dead ends: 73918 [2021-11-04 10:36:00,480 INFO L226 Difference]: Without dead ends: 39638 [2021-11-04 10:36:00,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:00,525 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1064 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 8777 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15503.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.91ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17226.04ms IncrementalHoareTripleChecker+Time [2021-11-04 10:36:00,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 0 Invalid, 8790 Unknown, 0 Unchecked, 30.91ms Time], IncrementalHoareTripleChecker [13 Valid, 8777 Invalid, 0 Unknown, 0 Unchecked, 17226.04ms Time] [2021-11-04 10:36:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39638 states. [2021-11-04 10:36:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39638 to 39602. [2021-11-04 10:36:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39602 states, 39592 states have (on average 1.2974843402707619) internal successors, (51370), 39601 states have internal predecessors, (51370), 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) [2021-11-04 10:36:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39602 states to 39602 states and 51370 transitions. [2021-11-04 10:36:02,147 INFO L78 Accepts]: Start accepts. Automaton has 39602 states and 51370 transitions. Word has length 166 [2021-11-04 10:36:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:36:02,147 INFO L470 AbstractCegarLoop]: Abstraction has 39602 states and 51370 transitions. [2021-11-04 10:36:02,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-04 10:36:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 39602 states and 51370 transitions. [2021-11-04 10:36:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-04 10:36:02,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:36:02,155 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-04 10:36:02,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-04 10:36:02,155 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:36:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:36:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1151249625, now seen corresponding path program 1 times [2021-11-04 10:36:02,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:36:02,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567852275] [2021-11-04 10:36:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:36:02,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:36:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:36:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 10:36:02,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:36:02,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567852275] [2021-11-04 10:36:02,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567852275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:36:02,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:36:02,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:36:02,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459566076] [2021-11-04 10:36:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:36:02,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:36:02,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:36:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:36:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:02,276 INFO L87 Difference]: Start difference. First operand 39602 states and 51370 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-04 10:36:04,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:36:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:36:20,878 INFO L93 Difference]: Finished difference Result 84436 states and 109710 transitions. [2021-11-04 10:36:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:36:20,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 166 [2021-11-04 10:36:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:36:20,965 INFO L225 Difference]: With dead ends: 84436 [2021-11-04 10:36:20,966 INFO L226 Difference]: Without dead ends: 45008 [2021-11-04 10:36:21,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:21,016 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1700 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 8147 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14786.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.96ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16477.27ms IncrementalHoareTripleChecker+Time [2021-11-04 10:36:21,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1700 Valid, 0 Invalid, 8163 Unknown, 0 Unchecked, 29.96ms Time], IncrementalHoareTripleChecker [16 Valid, 8147 Invalid, 0 Unknown, 0 Unchecked, 16477.27ms Time] [2021-11-04 10:36:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45008 states. [2021-11-04 10:36:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45008 to 44972. [2021-11-04 10:36:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44972 states, 44962 states have (on average 1.29785151906054) internal successors, (58354), 44971 states have internal predecessors, (58354), 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) [2021-11-04 10:36:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44972 states to 44972 states and 58354 transitions. [2021-11-04 10:36:22,838 INFO L78 Accepts]: Start accepts. Automaton has 44972 states and 58354 transitions. Word has length 166 [2021-11-04 10:36:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:36:22,839 INFO L470 AbstractCegarLoop]: Abstraction has 44972 states and 58354 transitions. [2021-11-04 10:36:22,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-04 10:36:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 44972 states and 58354 transitions. [2021-11-04 10:36:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-04 10:36:22,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:36:22,847 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 10:36:22,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-04 10:36:22,847 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:36:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:36:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2074869977, now seen corresponding path program 1 times [2021-11-04 10:36:22,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:36:22,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289995586] [2021-11-04 10:36:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:36:22,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:36:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:36:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 10:36:22,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:36:22,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289995586] [2021-11-04 10:36:22,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289995586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:36:22,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:36:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:36:22,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060279230] [2021-11-04 10:36:22,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:36:22,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:36:22,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:36:22,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:36:22,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:22,989 INFO L87 Difference]: Start difference. First operand 44972 states and 58354 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-04 10:36:24,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:36:25,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:36:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:36:41,158 INFO L93 Difference]: Finished difference Result 95152 states and 123630 transitions. [2021-11-04 10:36:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:36:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 201 [2021-11-04 10:36:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:36:41,260 INFO L225 Difference]: With dead ends: 95152 [2021-11-04 10:36:41,261 INFO L226 Difference]: Without dead ends: 50354 [2021-11-04 10:36:41,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:41,313 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1067 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 8253 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14206.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.46ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 8253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15855.56ms IncrementalHoareTripleChecker+Time [2021-11-04 10:36:41,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1067 Valid, 0 Invalid, 8265 Unknown, 0 Unchecked, 26.46ms Time], IncrementalHoareTripleChecker [12 Valid, 8253 Invalid, 0 Unknown, 0 Unchecked, 15855.56ms Time] [2021-11-04 10:36:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50354 states. [2021-11-04 10:36:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50354 to 50318. [2021-11-04 10:36:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50318 states, 50308 states have (on average 1.2982825793114414) internal successors, (65314), 50317 states have internal predecessors, (65314), 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) [2021-11-04 10:36:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50318 states to 50318 states and 65314 transitions. [2021-11-04 10:36:43,402 INFO L78 Accepts]: Start accepts. Automaton has 50318 states and 65314 transitions. Word has length 201 [2021-11-04 10:36:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:36:43,403 INFO L470 AbstractCegarLoop]: Abstraction has 50318 states and 65314 transitions. [2021-11-04 10:36:43,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-04 10:36:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 50318 states and 65314 transitions. [2021-11-04 10:36:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-04 10:36:43,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:36:43,412 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 10:36:43,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-04 10:36:43,412 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:36:43,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:36:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash 858716251, now seen corresponding path program 1 times [2021-11-04 10:36:43,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:36:43,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924227583] [2021-11-04 10:36:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:36:43,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:36:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:36:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 10:36:43,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:36:43,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924227583] [2021-11-04 10:36:43,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924227583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:36:43,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:36:43,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:36:43,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831844149] [2021-11-04 10:36:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:36:43,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:36:43,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:36:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:36:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:36:43,563 INFO L87 Difference]: Start difference. First operand 50318 states and 65314 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-04 10:36:44,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:36:46,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:37:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:37:02,234 INFO L93 Difference]: Finished difference Result 105856 states and 137574 transitions. [2021-11-04 10:37:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:37:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 201 [2021-11-04 10:37:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:37:02,374 INFO L225 Difference]: With dead ends: 105856 [2021-11-04 10:37:02,374 INFO L226 Difference]: Without dead ends: 55712 [2021-11-04 10:37:02,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:37:02,439 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1076 mSDsluCounter, 3786 mSDsCounter, 0 mSdLazyCounter, 8771 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14689.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16258.97ms IncrementalHoareTripleChecker+Time [2021-11-04 10:37:02,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 0 Invalid, 8784 Unknown, 0 Unchecked, 17.37ms Time], IncrementalHoareTripleChecker [13 Valid, 8771 Invalid, 0 Unknown, 0 Unchecked, 16258.97ms Time] [2021-11-04 10:37:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55712 states. [2021-11-04 10:37:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55712 to 55676. [2021-11-04 10:37:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55676 states, 55666 states have (on average 1.2985664498976035) internal successors, (72286), 55675 states have internal predecessors, (72286), 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) [2021-11-04 10:37:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55676 states to 55676 states and 72286 transitions. [2021-11-04 10:37:04,780 INFO L78 Accepts]: Start accepts. Automaton has 55676 states and 72286 transitions. Word has length 201 [2021-11-04 10:37:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:37:04,781 INFO L470 AbstractCegarLoop]: Abstraction has 55676 states and 72286 transitions. [2021-11-04 10:37:04,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-04 10:37:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55676 states and 72286 transitions. [2021-11-04 10:37:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-04 10:37:04,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:37:04,790 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 10:37:04,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-04 10:37:04,791 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:37:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:37:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1760550403, now seen corresponding path program 1 times [2021-11-04 10:37:04,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:37:04,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625336645] [2021-11-04 10:37:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:37:04,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:37:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:37:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 10:37:04,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:37:04,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625336645] [2021-11-04 10:37:04,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625336645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:37:04,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:37:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:37:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565548128] [2021-11-04 10:37:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:37:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:37:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:37:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:37:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:37:04,961 INFO L87 Difference]: Start difference. First operand 55676 states and 72286 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2021-11-04 10:37:05,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:37:08,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:37:10,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:37:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:37:43,163 INFO L93 Difference]: Finished difference Result 171702 states and 223034 transitions. [2021-11-04 10:37:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:37:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 228 [2021-11-04 10:37:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:37:43,426 INFO L225 Difference]: With dead ends: 171702 [2021-11-04 10:37:43,426 INFO L226 Difference]: Without dead ends: 116200 [2021-11-04 10:37:43,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:37:43,506 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6558 mSDsluCounter, 10239 mSDsCounter, 0 mSdLazyCounter, 17795 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29936.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6558 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.82ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17795 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33068.86ms IncrementalHoareTripleChecker+Time [2021-11-04 10:37:43,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6558 Valid, 0 Invalid, 17804 Unknown, 0 Unchecked, 76.82ms Time], IncrementalHoareTripleChecker [7 Valid, 17795 Invalid, 2 Unknown, 0 Unchecked, 33068.86ms Time] [2021-11-04 10:37:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116200 states. [2021-11-04 10:37:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116200 to 60950. [2021-11-04 10:37:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60950 states, 60940 states have (on average 1.2992123400065638) internal successors, (79174), 60949 states have internal predecessors, (79174), 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) [2021-11-04 10:37:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60950 states to 60950 states and 79174 transitions. [2021-11-04 10:37:46,642 INFO L78 Accepts]: Start accepts. Automaton has 60950 states and 79174 transitions. Word has length 228 [2021-11-04 10:37:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:37:46,642 INFO L470 AbstractCegarLoop]: Abstraction has 60950 states and 79174 transitions. [2021-11-04 10:37:46,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2021-11-04 10:37:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 60950 states and 79174 transitions. [2021-11-04 10:37:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-04 10:37:46,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:37:46,654 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 10:37:46,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-04 10:37:46,654 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:37:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:37:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash -325378439, now seen corresponding path program 1 times [2021-11-04 10:37:46,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:37:46,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230754148] [2021-11-04 10:37:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:37:46,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:37:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:37:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 10:37:46,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:37:46,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230754148] [2021-11-04 10:37:46,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230754148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:37:46,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:37:46,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:37:46,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794421004] [2021-11-04 10:37:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:37:46,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:37:46,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:37:46,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:37:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:37:46,807 INFO L87 Difference]: Start difference. First operand 60950 states and 79174 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2021-11-04 10:37:49,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:37:51,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:38:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:38:23,552 INFO L93 Difference]: Finished difference Result 182310 states and 236930 transitions. [2021-11-04 10:38:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:38:23,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 229 [2021-11-04 10:38:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:38:23,839 INFO L225 Difference]: With dead ends: 182310 [2021-11-04 10:38:23,839 INFO L226 Difference]: Without dead ends: 121534 [2021-11-04 10:38:24,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:38:24,113 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6362 mSDsluCounter, 10833 mSDsCounter, 0 mSdLazyCounter, 18299 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28523.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6362 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.53ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 18299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31563.19ms IncrementalHoareTripleChecker+Time [2021-11-04 10:38:24,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6362 Valid, 0 Invalid, 18312 Unknown, 0 Unchecked, 54.53ms Time], IncrementalHoareTripleChecker [12 Valid, 18299 Invalid, 1 Unknown, 0 Unchecked, 31563.19ms Time] [2021-11-04 10:38:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121534 states. [2021-11-04 10:38:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121534 to 66284. [2021-11-04 10:38:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66284 states, 66274 states have (on average 1.299483960527507) internal successors, (86122), 66283 states have internal predecessors, (86122), 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) [2021-11-04 10:38:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66284 states to 66284 states and 86122 transitions. [2021-11-04 10:38:27,662 INFO L78 Accepts]: Start accepts. Automaton has 66284 states and 86122 transitions. Word has length 229 [2021-11-04 10:38:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:38:27,663 INFO L470 AbstractCegarLoop]: Abstraction has 66284 states and 86122 transitions. [2021-11-04 10:38:27,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2021-11-04 10:38:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 66284 states and 86122 transitions. [2021-11-04 10:38:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-04 10:38:27,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:38:27,673 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 10:38:27,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-04 10:38:27,674 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:38:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:38:27,674 INFO L85 PathProgramCache]: Analyzing trace with hash -349662204, now seen corresponding path program 1 times [2021-11-04 10:38:27,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:38:27,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879171062] [2021-11-04 10:38:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:38:27,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:38:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:38:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 10:38:27,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:38:27,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879171062] [2021-11-04 10:38:27,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879171062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:38:27,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:38:27,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:38:27,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323661124] [2021-11-04 10:38:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:38:27,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:38:27,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:38:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:38:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:38:27,815 INFO L87 Difference]: Start difference. First operand 66284 states and 86122 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2021-11-04 10:38:29,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:39:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:39:05,157 INFO L93 Difference]: Finished difference Result 192966 states and 250838 transitions. [2021-11-04 10:39:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:39:05,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 230 [2021-11-04 10:39:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:39:05,559 INFO L225 Difference]: With dead ends: 192966 [2021-11-04 10:39:05,559 INFO L226 Difference]: Without dead ends: 126856 [2021-11-04 10:39:05,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:39:05,644 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5483 mSDsluCounter, 11324 mSDsCounter, 0 mSdLazyCounter, 19426 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27781.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5483 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.05ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19426 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30555.54ms IncrementalHoareTripleChecker+Time [2021-11-04 10:39:05,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5483 Valid, 0 Invalid, 19441 Unknown, 0 Unchecked, 57.05ms Time], IncrementalHoareTripleChecker [14 Valid, 19426 Invalid, 1 Unknown, 0 Unchecked, 30555.54ms Time] [2021-11-04 10:39:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126856 states. [2021-11-04 10:39:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126856 to 71606. [2021-11-04 10:39:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71606 states, 71596 states have (on average 1.299765350019554) internal successors, (93058), 71605 states have internal predecessors, (93058), 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) [2021-11-04 10:39:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71606 states to 71606 states and 93058 transitions. [2021-11-04 10:39:09,980 INFO L78 Accepts]: Start accepts. Automaton has 71606 states and 93058 transitions. Word has length 230 [2021-11-04 10:39:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:39:09,996 INFO L470 AbstractCegarLoop]: Abstraction has 71606 states and 93058 transitions. [2021-11-04 10:39:09,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2021-11-04 10:39:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 71606 states and 93058 transitions. [2021-11-04 10:39:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-04 10:39:10,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:39:10,008 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 10:39:10,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-04 10:39:10,009 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:39:10,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:39:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash 725462497, now seen corresponding path program 1 times [2021-11-04 10:39:10,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:39:10,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128401794] [2021-11-04 10:39:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:39:10,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:39:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:39:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-04 10:39:10,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:39:10,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128401794] [2021-11-04 10:39:10,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128401794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:39:10,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:39:10,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:39:10,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791353366] [2021-11-04 10:39:10,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:39:10,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:39:10,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:39:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:39:10,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:39:10,195 INFO L87 Difference]: Start difference. First operand 71606 states and 93058 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-11-04 10:39:12,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:39:29,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:39:29,959 INFO L93 Difference]: Finished difference Result 148300 states and 192799 transitions. [2021-11-04 10:39:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:39:29,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 241 [2021-11-04 10:39:29,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:39:30,117 INFO L225 Difference]: With dead ends: 148300 [2021-11-04 10:39:30,118 INFO L226 Difference]: Without dead ends: 76868 [2021-11-04 10:39:30,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:39:30,198 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1440 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 8387 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14238.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15616.95ms IncrementalHoareTripleChecker+Time [2021-11-04 10:39:30,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 0 Invalid, 8390 Unknown, 0 Unchecked, 23.09ms Time], IncrementalHoareTripleChecker [2 Valid, 8387 Invalid, 1 Unknown, 0 Unchecked, 15616.95ms Time] [2021-11-04 10:39:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76868 states. [2021-11-04 10:39:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76868 to 76805. [2021-11-04 10:39:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76805 states, 76795 states have (on average 1.3004883130412137) internal successors, (99871), 76804 states have internal predecessors, (99871), 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) [2021-11-04 10:39:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76805 states to 76805 states and 99871 transitions. [2021-11-04 10:39:34,338 INFO L78 Accepts]: Start accepts. Automaton has 76805 states and 99871 transitions. Word has length 241 [2021-11-04 10:39:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:39:34,338 INFO L470 AbstractCegarLoop]: Abstraction has 76805 states and 99871 transitions. [2021-11-04 10:39:34,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-11-04 10:39:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 76805 states and 99871 transitions. [2021-11-04 10:39:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-04 10:39:34,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:39:34,351 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2021-11-04 10:39:34,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-04 10:39:34,351 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:39:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:39:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -203137482, now seen corresponding path program 1 times [2021-11-04 10:39:34,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:39:34,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088768966] [2021-11-04 10:39:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:39:34,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:39:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:39:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-04 10:39:34,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:39:34,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088768966] [2021-11-04 10:39:34,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088768966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 10:39:34,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002749496] [2021-11-04 10:39:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:39:34,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 10:39:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:39:34,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 10:39:34,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 10:39:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:39:35,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 3581 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 10:39:35,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 10:39:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-04 10:39:36,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 10:39:36,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002749496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:39:36,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 10:39:36,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 10:39:36,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685690845] [2021-11-04 10:39:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:39:36,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:39:36,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:39:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:39:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:39:36,040 INFO L87 Difference]: Start difference. First operand 76805 states and 99871 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-11-04 10:39:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:39:52,520 INFO L93 Difference]: Finished difference Result 158866 states and 206759 transitions. [2021-11-04 10:39:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:39:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 248 [2021-11-04 10:39:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:39:52,715 INFO L225 Difference]: With dead ends: 158866 [2021-11-04 10:39:52,715 INFO L226 Difference]: Without dead ends: 82235 [2021-11-04 10:39:52,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.02ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:39:52,831 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1752 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 7402 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10567.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.44ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11926.32ms IncrementalHoareTripleChecker+Time [2021-11-04 10:39:52,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 0 Invalid, 7429 Unknown, 0 Unchecked, 12.44ms Time], IncrementalHoareTripleChecker [27 Valid, 7402 Invalid, 0 Unknown, 0 Unchecked, 11926.32ms Time] [2021-11-04 10:39:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82235 states. [2021-11-04 10:39:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82235 to 82199. [2021-11-04 10:39:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82199 states, 82189 states have (on average 1.3015488690700703) internal successors, (106973), 82198 states have internal predecessors, (106973), 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) [2021-11-04 10:39:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82199 states to 82199 states and 106973 transitions. [2021-11-04 10:39:57,256 INFO L78 Accepts]: Start accepts. Automaton has 82199 states and 106973 transitions. Word has length 248 [2021-11-04 10:39:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:39:57,256 INFO L470 AbstractCegarLoop]: Abstraction has 82199 states and 106973 transitions. [2021-11-04 10:39:57,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-11-04 10:39:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 82199 states and 106973 transitions. [2021-11-04 10:39:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-04 10:39:57,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:39:57,271 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-04 10:39:57,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 10:39:57,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-04 10:39:57,473 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-04 10:39:57,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:39:57,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1363029498, now seen corresponding path program 1 times [2021-11-04 10:39:57,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:39:57,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376348338] [2021-11-04 10:39:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:39:57,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:39:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:39:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-04 10:39:57,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:39:57,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376348338] [2021-11-04 10:39:57,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376348338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:39:57,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:39:57,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:39:57,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85578437] [2021-11-04 10:39:57,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:39:57,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:39:57,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:39:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:39:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:39:57,627 INFO L87 Difference]: Start difference. First operand 82199 states and 106973 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-11-04 10:39:59,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []