./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-smc91c92_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:04:47,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:04:47,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:04:47,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:04:47,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:04:47,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:04:47,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:04:47,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:04:47,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:04:47,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:04:47,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:04:47,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:04:47,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:04:47,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:04:47,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:04:47,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:04:47,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:04:47,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:04:47,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:04:47,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:04:47,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:04:47,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:04:47,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:04:47,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:04:47,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:04:47,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:04:47,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:04:47,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:04:47,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:04:47,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:04:47,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:04:47,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:04:47,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:04:47,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:04:47,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:04:47,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:04:47,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:04:47,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:04:47,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:04:47,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:04:47,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:04:47,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:04:47,196 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:04:47,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:04:47,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:04:47,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:04:47,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:04:47,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:04:47,200 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:04:47,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:04:47,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:04:47,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:04:47,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:04:47,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:04:47,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:04:47,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:04:47,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:04:47,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:04:47,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:04:47,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:04:47,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:04:47,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:04:47,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:04:47,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:04:47,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:04:47,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:04:47,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:04:47,204 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:04:47,204 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:04:47,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:04:47,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:04:47,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2021-11-06 19:04:47,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:04:47,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:04:47,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:04:47,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:04:47,423 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:04:47,424 INFO L432 ainManager$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-smc91c92_cs.cil.i [2021-11-06 19:04:47,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc18e4d6/292410497e8f454b87b85fd7b9063c6e/FLAG8dcaec4c3 [2021-11-06 19:04:48,152 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:04:48,152 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-smc91c92_cs.cil.i [2021-11-06 19:04:48,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc18e4d6/292410497e8f454b87b85fd7b9063c6e/FLAG8dcaec4c3 [2021-11-06 19:04:48,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc18e4d6/292410497e8f454b87b85fd7b9063c6e [2021-11-06 19:04:48,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:04:48,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:04:48,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:04:48,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:04:48,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:04:48,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:04:48" (1/1) ... [2021-11-06 19:04:48,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7179845c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:48, skipping insertion in model container [2021-11-06 19:04:48,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:04:48" (1/1) ... [2021-11-06 19:04:48,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:04:48,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:04:50,182 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-smc91c92_cs.cil.i[350019,350032] [2021-11-06 19:04:50,185 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-smc91c92_cs.cil.i[350188,350201] [2021-11-06 19:04:50,185 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-smc91c92_cs.cil.i[350355,350368] [2021-11-06 19:04:50,186 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-smc91c92_cs.cil.i[350523,350536] [2021-11-06 19:04:50,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:04:50,272 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:04:50,497 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-smc91c92_cs.cil.i[350019,350032] [2021-11-06 19:04:50,498 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-smc91c92_cs.cil.i[350188,350201] [2021-11-06 19:04:50,498 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-smc91c92_cs.cil.i[350355,350368] [2021-11-06 19:04:50,499 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-smc91c92_cs.cil.i[350523,350536] [2021-11-06 19:04:50,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:04:50,654 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:04:50,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50 WrapperNode [2021-11-06 19:04:50,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:04:50,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:04:50,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:04:50,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:04:50,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:50,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:04:51,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:04:51,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:04:51,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:04:51,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:04:51,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:04:51,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:04:51,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:04:51,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (1/1) ... [2021-11-06 19:04:51,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:04:51,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:04:51,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 19:04:51,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 19:04:51,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:04:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:04:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:04:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:04:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:04:51,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:04:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:04:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:04:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:04:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-06 19:04:51,769 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-06 19:04:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:04:51,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:05:12,050 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 19:05:12,050 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:05:12,050 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:05:12,050 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:05:12,050 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:05:12,051 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:05:12,051 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:05:12,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:05:12,982 INFO L299 CfgBuilder]: Removed 3411 assume(true) statements. [2021-11-06 19:05:12,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:05:12 BoogieIcfgContainer [2021-11-06 19:05:12,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:05:12,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:05:12,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:05:12,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:05:12,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:04:48" (1/3) ... [2021-11-06 19:05:12,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786c70b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:05:12, skipping insertion in model container [2021-11-06 19:05:12,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:04:50" (2/3) ... [2021-11-06 19:05:12,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786c70b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:05:12, skipping insertion in model container [2021-11-06 19:05:12,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:05:12" (3/3) ... [2021-11-06 19:05:12,990 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2021-11-06 19:05:12,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:05:12,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-06 19:05:13,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:05:13,034 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 19:05:13,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-06 19:05:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 19:05:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 19:05:13,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:13,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:13,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 619962046, now seen corresponding path program 1 times [2021-11-06 19:05:13,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:13,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692704922] [2021-11-06 19:05:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:13,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:13,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:13,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692704922] [2021-11-06 19:05:13,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692704922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:13,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:13,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:13,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659084987] [2021-11-06 19:05:13,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:13,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:13,773 INFO L87 Difference]: Start difference. First operand has 3031 states, 2960 states have (on average 1.3179054054054054) internal successors, (3901), 3026 states have internal predecessors, (3901), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:16,355 INFO L93 Difference]: Finished difference Result 8635 states and 11145 transitions. [2021-11-06 19:05:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-06 19:05:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:16,391 INFO L225 Difference]: With dead ends: 8635 [2021-11-06 19:05:16,391 INFO L226 Difference]: Without dead ends: 5512 [2021-11-06 19:05:16,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2021-11-06 19:05:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5450. [2021-11-06 19:05:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5375 states have (on average 1.2673488372093022) internal successors, (6812), 5441 states have internal predecessors, (6812), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 19:05:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 6824 transitions. [2021-11-06 19:05:16,590 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 6824 transitions. Word has length 54 [2021-11-06 19:05:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:16,592 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 6824 transitions. [2021-11-06 19:05:16,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 6824 transitions. [2021-11-06 19:05:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 19:05:16,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:16,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:05:16,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:16,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1150160792, now seen corresponding path program 1 times [2021-11-06 19:05:16,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:16,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996830370] [2021-11-06 19:05:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:16,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:16,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:16,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996830370] [2021-11-06 19:05:16,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996830370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:16,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:16,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:16,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733524236] [2021-11-06 19:05:16,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:16,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:16,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:16,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:16,828 INFO L87 Difference]: Start difference. First operand 5450 states and 6824 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:19,103 INFO L93 Difference]: Finished difference Result 10032 states and 12574 transitions. [2021-11-06 19:05:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-06 19:05:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:19,118 INFO L225 Difference]: With dead ends: 10032 [2021-11-06 19:05:19,118 INFO L226 Difference]: Without dead ends: 4682 [2021-11-06 19:05:19,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-06 19:05:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4682. [2021-11-06 19:05:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 4611 states have (on average 1.2669702884406853) internal successors, (5842), 4673 states have internal predecessors, (5842), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 19:05:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 5854 transitions. [2021-11-06 19:05:19,353 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 5854 transitions. Word has length 59 [2021-11-06 19:05:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:19,356 INFO L470 AbstractCegarLoop]: Abstraction has 4682 states and 5854 transitions. [2021-11-06 19:05:19,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 5854 transitions. [2021-11-06 19:05:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 19:05:19,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:19,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:19,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:05:19,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash -148878727, now seen corresponding path program 1 times [2021-11-06 19:05:19,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:19,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288232080] [2021-11-06 19:05:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:19,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:19,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288232080] [2021-11-06 19:05:19,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288232080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:19,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:19,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:19,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202966499] [2021-11-06 19:05:19,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:19,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:19,577 INFO L87 Difference]: Start difference. First operand 4682 states and 5854 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:22,140 INFO L93 Difference]: Finished difference Result 12434 states and 15571 transitions. [2021-11-06 19:05:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-06 19:05:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:22,161 INFO L225 Difference]: With dead ends: 12434 [2021-11-06 19:05:22,161 INFO L226 Difference]: Without dead ends: 7852 [2021-11-06 19:05:22,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2021-11-06 19:05:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 7516. [2021-11-06 19:05:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7516 states, 7437 states have (on average 1.2717493613016002) internal successors, (9458), 7499 states have internal predecessors, (9458), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 19:05:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7516 states to 7516 states and 9482 transitions. [2021-11-06 19:05:22,331 INFO L78 Accepts]: Start accepts. Automaton has 7516 states and 9482 transitions. Word has length 59 [2021-11-06 19:05:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:22,332 INFO L470 AbstractCegarLoop]: Abstraction has 7516 states and 9482 transitions. [2021-11-06 19:05:22,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states and 9482 transitions. [2021-11-06 19:05:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 19:05:22,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:22,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:22,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:05:22,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 589305686, now seen corresponding path program 1 times [2021-11-06 19:05:22,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:22,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689261272] [2021-11-06 19:05:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:22,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:22,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:22,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689261272] [2021-11-06 19:05:22,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689261272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:22,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:22,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364695732] [2021-11-06 19:05:22,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:22,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:22,531 INFO L87 Difference]: Start difference. First operand 7516 states and 9482 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:24,848 INFO L93 Difference]: Finished difference Result 13404 states and 16932 transitions. [2021-11-06 19:05:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:24,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-06 19:05:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:24,986 INFO L225 Difference]: With dead ends: 13404 [2021-11-06 19:05:24,987 INFO L226 Difference]: Without dead ends: 5988 [2021-11-06 19:05:24,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2021-11-06 19:05:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5988. [2021-11-06 19:05:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5913 states have (on average 1.2721122949433452) internal successors, (7522), 5971 states have internal predecessors, (7522), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 19:05:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 7546 transitions. [2021-11-06 19:05:25,165 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 7546 transitions. Word has length 60 [2021-11-06 19:05:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:25,167 INFO L470 AbstractCegarLoop]: Abstraction has 5988 states and 7546 transitions. [2021-11-06 19:05:25,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 7546 transitions. [2021-11-06 19:05:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 19:05:25,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:25,170 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:25,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:05:25,171 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:25,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -621039907, now seen corresponding path program 1 times [2021-11-06 19:05:25,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:25,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400677333] [2021-11-06 19:05:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:25,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:25,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:25,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400677333] [2021-11-06 19:05:25,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400677333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:25,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:25,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:25,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710382767] [2021-11-06 19:05:25,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:25,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:25,425 INFO L87 Difference]: Start difference. First operand 5988 states and 7546 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:27,848 INFO L93 Difference]: Finished difference Result 11918 states and 15009 transitions. [2021-11-06 19:05:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:27,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-11-06 19:05:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:27,881 INFO L225 Difference]: With dead ends: 11918 [2021-11-06 19:05:27,881 INFO L226 Difference]: Without dead ends: 8836 [2021-11-06 19:05:27,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2021-11-06 19:05:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 8790. [2021-11-06 19:05:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 8707 states have (on average 1.273458137131044) internal successors, (11088), 8765 states have internal predecessors, (11088), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:05:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 11124 transitions. [2021-11-06 19:05:28,057 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 11124 transitions. Word has length 83 [2021-11-06 19:05:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:28,058 INFO L470 AbstractCegarLoop]: Abstraction has 8790 states and 11124 transitions. [2021-11-06 19:05:28,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 11124 transitions. [2021-11-06 19:05:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 19:05:28,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:28,062 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:28,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:05:28,063 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1900903585, now seen corresponding path program 1 times [2021-11-06 19:05:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:28,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994480786] [2021-11-06 19:05:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:28,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:28,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:28,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994480786] [2021-11-06 19:05:28,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994480786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:28,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:28,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:28,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508977012] [2021-11-06 19:05:28,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:28,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:28,254 INFO L87 Difference]: Start difference. First operand 8790 states and 11124 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:30,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:30,787 INFO L93 Difference]: Finished difference Result 17524 states and 22169 transitions. [2021-11-06 19:05:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2021-11-06 19:05:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:30,818 INFO L225 Difference]: With dead ends: 17524 [2021-11-06 19:05:30,818 INFO L226 Difference]: Without dead ends: 11640 [2021-11-06 19:05:30,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2021-11-06 19:05:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 11587. [2021-11-06 19:05:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11587 states, 11496 states have (on average 1.274269311064718) internal successors, (14649), 11554 states have internal predecessors, (14649), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 14697 transitions. [2021-11-06 19:05:31,076 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 14697 transitions. Word has length 83 [2021-11-06 19:05:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:31,076 INFO L470 AbstractCegarLoop]: Abstraction has 11587 states and 14697 transitions. [2021-11-06 19:05:31,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 14697 transitions. [2021-11-06 19:05:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 19:05:31,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:31,083 INFO L513 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] [2021-11-06 19:05:31,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:05:31,084 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1391660714, now seen corresponding path program 1 times [2021-11-06 19:05:31,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:31,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811705836] [2021-11-06 19:05:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:31,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:31,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:31,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811705836] [2021-11-06 19:05:31,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811705836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:31,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:31,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:31,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60732683] [2021-11-06 19:05:31,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:31,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:31,396 INFO L87 Difference]: Start difference. First operand 11587 states and 14697 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:31,977 INFO L93 Difference]: Finished difference Result 11587 states and 14697 transitions. [2021-11-06 19:05:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:31,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 84 [2021-11-06 19:05:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:32,006 INFO L225 Difference]: With dead ends: 11587 [2021-11-06 19:05:32,007 INFO L226 Difference]: Without dead ends: 11581 [2021-11-06 19:05:32,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11581 states. [2021-11-06 19:05:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11581 to 11581. [2021-11-06 19:05:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11581 states, 11493 states have (on average 1.274079874706343) internal successors, (14643), 11548 states have internal predecessors, (14643), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 14691 transitions. [2021-11-06 19:05:32,301 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 14691 transitions. Word has length 84 [2021-11-06 19:05:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:32,302 INFO L470 AbstractCegarLoop]: Abstraction has 11581 states and 14691 transitions. [2021-11-06 19:05:32,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 14691 transitions. [2021-11-06 19:05:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:05:32,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:32,304 INFO L513 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] [2021-11-06 19:05:32,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:05:32,304 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1650967527, now seen corresponding path program 1 times [2021-11-06 19:05:32,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:32,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773185564] [2021-11-06 19:05:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:32,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:32,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:32,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773185564] [2021-11-06 19:05:32,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773185564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:32,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:32,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:32,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155402210] [2021-11-06 19:05:32,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:32,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:32,617 INFO L87 Difference]: Start difference. First operand 11581 states and 14691 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:33,145 INFO L93 Difference]: Finished difference Result 11581 states and 14691 transitions. [2021-11-06 19:05:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 86 [2021-11-06 19:05:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:33,172 INFO L225 Difference]: With dead ends: 11581 [2021-11-06 19:05:33,173 INFO L226 Difference]: Without dead ends: 11575 [2021-11-06 19:05:33,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11575 states. [2021-11-06 19:05:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11575 to 11575. [2021-11-06 19:05:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11575 states, 11490 states have (on average 1.2738903394255874) internal successors, (14637), 11542 states have internal predecessors, (14637), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11575 states to 11575 states and 14685 transitions. [2021-11-06 19:05:33,454 INFO L78 Accepts]: Start accepts. Automaton has 11575 states and 14685 transitions. Word has length 86 [2021-11-06 19:05:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:33,455 INFO L470 AbstractCegarLoop]: Abstraction has 11575 states and 14685 transitions. [2021-11-06 19:05:33,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 11575 states and 14685 transitions. [2021-11-06 19:05:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 19:05:33,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:33,457 INFO L513 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] [2021-11-06 19:05:33,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:05:33,457 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1736711332, now seen corresponding path program 1 times [2021-11-06 19:05:33,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:33,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625579583] [2021-11-06 19:05:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:33,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:33,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:33,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625579583] [2021-11-06 19:05:33,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625579583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:33,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:33,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:33,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547622028] [2021-11-06 19:05:33,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:33,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:33,772 INFO L87 Difference]: Start difference. First operand 11575 states and 14685 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:34,357 INFO L93 Difference]: Finished difference Result 11575 states and 14685 transitions. [2021-11-06 19:05:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:34,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 88 [2021-11-06 19:05:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:34,377 INFO L225 Difference]: With dead ends: 11575 [2021-11-06 19:05:34,378 INFO L226 Difference]: Without dead ends: 11569 [2021-11-06 19:05:34,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2021-11-06 19:05:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 11569. [2021-11-06 19:05:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11487 states have (on average 1.2737007051449465) internal successors, (14631), 11536 states have internal predecessors, (14631), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 14679 transitions. [2021-11-06 19:05:34,655 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 14679 transitions. Word has length 88 [2021-11-06 19:05:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:34,655 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 14679 transitions. [2021-11-06 19:05:34,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 14679 transitions. [2021-11-06 19:05:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 19:05:34,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:34,658 INFO L513 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] [2021-11-06 19:05:34,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:05:34,658 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1762838303, now seen corresponding path program 1 times [2021-11-06 19:05:34,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:34,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884357674] [2021-11-06 19:05:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:34,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:34,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:34,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884357674] [2021-11-06 19:05:34,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884357674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:34,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:34,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:34,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975547441] [2021-11-06 19:05:34,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:34,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:34,928 INFO L87 Difference]: Start difference. First operand 11569 states and 14679 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:35,462 INFO L93 Difference]: Finished difference Result 11569 states and 14679 transitions. [2021-11-06 19:05:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2021-11-06 19:05:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:35,477 INFO L225 Difference]: With dead ends: 11569 [2021-11-06 19:05:35,478 INFO L226 Difference]: Without dead ends: 11563 [2021-11-06 19:05:35,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11563 states. [2021-11-06 19:05:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11563 to 11563. [2021-11-06 19:05:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11563 states, 11484 states have (on average 1.2735109717868338) internal successors, (14625), 11530 states have internal predecessors, (14625), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11563 states to 11563 states and 14673 transitions. [2021-11-06 19:05:35,805 INFO L78 Accepts]: Start accepts. Automaton has 11563 states and 14673 transitions. Word has length 90 [2021-11-06 19:05:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:35,805 INFO L470 AbstractCegarLoop]: Abstraction has 11563 states and 14673 transitions. [2021-11-06 19:05:35,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 11563 states and 14673 transitions. [2021-11-06 19:05:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 19:05:35,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:35,808 INFO L513 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] [2021-11-06 19:05:35,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:05:35,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1870645090, now seen corresponding path program 1 times [2021-11-06 19:05:35,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:35,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577781178] [2021-11-06 19:05:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:35,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:36,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:36,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577781178] [2021-11-06 19:05:36,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577781178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:36,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:36,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:36,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131933826] [2021-11-06 19:05:36,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:36,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:36,034 INFO L87 Difference]: Start difference. First operand 11563 states and 14673 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:36,478 INFO L93 Difference]: Finished difference Result 11563 states and 14673 transitions. [2021-11-06 19:05:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 92 [2021-11-06 19:05:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:36,500 INFO L225 Difference]: With dead ends: 11563 [2021-11-06 19:05:36,501 INFO L226 Difference]: Without dead ends: 11557 [2021-11-06 19:05:36,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11557 states. [2021-11-06 19:05:36,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11557 to 11557. [2021-11-06 19:05:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11557 states, 11481 states have (on average 1.2733211392735824) internal successors, (14619), 11524 states have internal predecessors, (14619), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11557 states to 11557 states and 14667 transitions. [2021-11-06 19:05:36,848 INFO L78 Accepts]: Start accepts. Automaton has 11557 states and 14667 transitions. Word has length 92 [2021-11-06 19:05:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:36,849 INFO L470 AbstractCegarLoop]: Abstraction has 11557 states and 14667 transitions. [2021-11-06 19:05:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11557 states and 14667 transitions. [2021-11-06 19:05:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 19:05:36,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:36,851 INFO L513 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] [2021-11-06 19:05:36,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:05:36,853 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:36,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1901214683, now seen corresponding path program 1 times [2021-11-06 19:05:36,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:36,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111845869] [2021-11-06 19:05:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:36,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:37,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:37,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111845869] [2021-11-06 19:05:37,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111845869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:37,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:37,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:37,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347512374] [2021-11-06 19:05:37,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:37,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:37,096 INFO L87 Difference]: Start difference. First operand 11557 states and 14667 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:37,551 INFO L93 Difference]: Finished difference Result 11557 states and 14667 transitions. [2021-11-06 19:05:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:37,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 94 [2021-11-06 19:05:37,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:37,568 INFO L225 Difference]: With dead ends: 11557 [2021-11-06 19:05:37,568 INFO L226 Difference]: Without dead ends: 11551 [2021-11-06 19:05:37,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11551 states. [2021-11-06 19:05:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11551 to 11551. [2021-11-06 19:05:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11551 states, 11478 states have (on average 1.273131207527444) internal successors, (14613), 11518 states have internal predecessors, (14613), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11551 states to 11551 states and 14661 transitions. [2021-11-06 19:05:37,929 INFO L78 Accepts]: Start accepts. Automaton has 11551 states and 14661 transitions. Word has length 94 [2021-11-06 19:05:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:37,930 INFO L470 AbstractCegarLoop]: Abstraction has 11551 states and 14661 transitions. [2021-11-06 19:05:37,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 11551 states and 14661 transitions. [2021-11-06 19:05:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 19:05:37,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:37,932 INFO L513 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] [2021-11-06 19:05:37,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:05:37,933 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1706058392, now seen corresponding path program 1 times [2021-11-06 19:05:37,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:37,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789731268] [2021-11-06 19:05:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:37,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:38,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:38,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789731268] [2021-11-06 19:05:38,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789731268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:38,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:38,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:38,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648381553] [2021-11-06 19:05:38,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:38,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:38,138 INFO L87 Difference]: Start difference. First operand 11551 states and 14661 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:38,850 INFO L93 Difference]: Finished difference Result 11551 states and 14661 transitions. [2021-11-06 19:05:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:38,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 96 [2021-11-06 19:05:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:38,871 INFO L225 Difference]: With dead ends: 11551 [2021-11-06 19:05:38,872 INFO L226 Difference]: Without dead ends: 11545 [2021-11-06 19:05:38,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2021-11-06 19:05:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 11545. [2021-11-06 19:05:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11545 states, 11475 states have (on average 1.2729411764705882) internal successors, (14607), 11512 states have internal predecessors, (14607), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11545 states to 11545 states and 14655 transitions. [2021-11-06 19:05:39,247 INFO L78 Accepts]: Start accepts. Automaton has 11545 states and 14655 transitions. Word has length 96 [2021-11-06 19:05:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:39,247 INFO L470 AbstractCegarLoop]: Abstraction has 11545 states and 14655 transitions. [2021-11-06 19:05:39,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 11545 states and 14655 transitions. [2021-11-06 19:05:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 19:05:39,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:39,250 INFO L513 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] [2021-11-06 19:05:39,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:05:39,250 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:39,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1155543851, now seen corresponding path program 1 times [2021-11-06 19:05:39,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:39,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635562511] [2021-11-06 19:05:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:39,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:39,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:39,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635562511] [2021-11-06 19:05:39,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635562511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:39,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:39,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:39,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009554105] [2021-11-06 19:05:39,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:39,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:39,462 INFO L87 Difference]: Start difference. First operand 11545 states and 14655 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:39,911 INFO L93 Difference]: Finished difference Result 11545 states and 14655 transitions. [2021-11-06 19:05:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 98 [2021-11-06 19:05:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:39,928 INFO L225 Difference]: With dead ends: 11545 [2021-11-06 19:05:39,928 INFO L226 Difference]: Without dead ends: 11539 [2021-11-06 19:05:39,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2021-11-06 19:05:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 11539. [2021-11-06 19:05:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11539 states, 11472 states have (on average 1.2727510460251046) internal successors, (14601), 11506 states have internal predecessors, (14601), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11539 states to 11539 states and 14649 transitions. [2021-11-06 19:05:40,435 INFO L78 Accepts]: Start accepts. Automaton has 11539 states and 14649 transitions. Word has length 98 [2021-11-06 19:05:40,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:40,436 INFO L470 AbstractCegarLoop]: Abstraction has 11539 states and 14649 transitions. [2021-11-06 19:05:40,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 11539 states and 14649 transitions. [2021-11-06 19:05:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 19:05:40,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:40,439 INFO L513 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, 1] [2021-11-06 19:05:40,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:05:40,439 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1918737042, now seen corresponding path program 1 times [2021-11-06 19:05:40,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:40,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452814990] [2021-11-06 19:05:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:40,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:40,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:40,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452814990] [2021-11-06 19:05:40,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452814990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:40,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:40,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:40,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003508962] [2021-11-06 19:05:40,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:40,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:40,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:40,751 INFO L87 Difference]: Start difference. First operand 11539 states and 14649 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:41,258 INFO L93 Difference]: Finished difference Result 11539 states and 14649 transitions. [2021-11-06 19:05:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:41,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 100 [2021-11-06 19:05:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:41,276 INFO L225 Difference]: With dead ends: 11539 [2021-11-06 19:05:41,276 INFO L226 Difference]: Without dead ends: 11533 [2021-11-06 19:05:41,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-11-06 19:05:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11533. [2021-11-06 19:05:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11533 states, 11469 states have (on average 1.2725608161130002) internal successors, (14595), 11500 states have internal predecessors, (14595), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11533 states to 11533 states and 14643 transitions. [2021-11-06 19:05:41,600 INFO L78 Accepts]: Start accepts. Automaton has 11533 states and 14643 transitions. Word has length 100 [2021-11-06 19:05:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:41,600 INFO L470 AbstractCegarLoop]: Abstraction has 11533 states and 14643 transitions. [2021-11-06 19:05:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 11533 states and 14643 transitions. [2021-11-06 19:05:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-06 19:05:41,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:41,603 INFO L513 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, 1, 1, 1] [2021-11-06 19:05:41,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 19:05:41,603 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1365175247, now seen corresponding path program 1 times [2021-11-06 19:05:41,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:41,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466018075] [2021-11-06 19:05:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:41,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:41,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:41,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466018075] [2021-11-06 19:05:41,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466018075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:41,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:41,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:41,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234073619] [2021-11-06 19:05:41,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:41,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:41,884 INFO L87 Difference]: Start difference. First operand 11533 states and 14643 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:42,356 INFO L93 Difference]: Finished difference Result 11533 states and 14643 transitions. [2021-11-06 19:05:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-06 19:05:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:42,374 INFO L225 Difference]: With dead ends: 11533 [2021-11-06 19:05:42,374 INFO L226 Difference]: Without dead ends: 11527 [2021-11-06 19:05:42,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11527 states. [2021-11-06 19:05:42,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11527 to 11527. [2021-11-06 19:05:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11527 states, 11466 states have (on average 1.272370486656201) internal successors, (14589), 11494 states have internal predecessors, (14589), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 14637 transitions. [2021-11-06 19:05:42,719 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 14637 transitions. Word has length 102 [2021-11-06 19:05:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:42,719 INFO L470 AbstractCegarLoop]: Abstraction has 11527 states and 14637 transitions. [2021-11-06 19:05:42,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 14637 transitions. [2021-11-06 19:05:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 19:05:42,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:42,722 INFO L513 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, 1, 1, 1, 1, 1] [2021-11-06 19:05:42,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 19:05:42,722 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1968234636, now seen corresponding path program 1 times [2021-11-06 19:05:42,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:42,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460417250] [2021-11-06 19:05:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:42,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:42,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:42,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460417250] [2021-11-06 19:05:42,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460417250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:42,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:42,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:42,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232619559] [2021-11-06 19:05:42,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:42,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:42,931 INFO L87 Difference]: Start difference. First operand 11527 states and 14637 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:43,459 INFO L93 Difference]: Finished difference Result 11527 states and 14637 transitions. [2021-11-06 19:05:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-06 19:05:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:43,474 INFO L225 Difference]: With dead ends: 11527 [2021-11-06 19:05:43,475 INFO L226 Difference]: Without dead ends: 11521 [2021-11-06 19:05:43,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2021-11-06 19:05:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11521. [2021-11-06 19:05:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11521 states, 11463 states have (on average 1.2721800575765507) internal successors, (14583), 11488 states have internal predecessors, (14583), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 14631 transitions. [2021-11-06 19:05:43,827 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 14631 transitions. Word has length 104 [2021-11-06 19:05:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:43,827 INFO L470 AbstractCegarLoop]: Abstraction has 11521 states and 14631 transitions. [2021-11-06 19:05:43,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 14631 transitions. [2021-11-06 19:05:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 19:05:43,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:43,830 INFO L513 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:43,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 19:05:43,831 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:43,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1687722185, now seen corresponding path program 1 times [2021-11-06 19:05:43,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:43,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061016752] [2021-11-06 19:05:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:43,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:44,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:44,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061016752] [2021-11-06 19:05:44,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061016752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:44,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:44,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:44,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335260434] [2021-11-06 19:05:44,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:44,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:44,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:44,045 INFO L87 Difference]: Start difference. First operand 11521 states and 14631 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:44,587 INFO L93 Difference]: Finished difference Result 11521 states and 14631 transitions. [2021-11-06 19:05:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:44,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-06 19:05:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:44,602 INFO L225 Difference]: With dead ends: 11521 [2021-11-06 19:05:44,602 INFO L226 Difference]: Without dead ends: 11422 [2021-11-06 19:05:44,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2021-11-06 19:05:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 11422. [2021-11-06 19:05:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11422 states, 11367 states have (on average 1.273774962611067) internal successors, (14479), 11389 states have internal predecessors, (14479), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 19:05:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 14527 transitions. [2021-11-06 19:05:44,976 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 14527 transitions. Word has length 106 [2021-11-06 19:05:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:44,977 INFO L470 AbstractCegarLoop]: Abstraction has 11422 states and 14527 transitions. [2021-11-06 19:05:44,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 14527 transitions. [2021-11-06 19:05:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 19:05:44,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:44,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:44,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 19:05:44,980 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1775453187, now seen corresponding path program 1 times [2021-11-06 19:05:44,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:44,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146295563] [2021-11-06 19:05:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:44,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:45,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:45,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146295563] [2021-11-06 19:05:45,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146295563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:45,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:45,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:45,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881011719] [2021-11-06 19:05:45,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:45,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:45,129 INFO L87 Difference]: Start difference. First operand 11422 states and 14527 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:48,093 INFO L93 Difference]: Finished difference Result 22498 states and 28664 transitions. [2021-11-06 19:05:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-06 19:05:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:48,110 INFO L225 Difference]: With dead ends: 22498 [2021-11-06 19:05:48,110 INFO L226 Difference]: Without dead ends: 11118 [2021-11-06 19:05:48,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2021-11-06 19:05:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 11076. [2021-11-06 19:05:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11076 states, 11029 states have (on average 1.2709221144256053) internal successors, (14017), 11051 states have internal predecessors, (14017), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:05:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 14053 transitions. [2021-11-06 19:05:48,486 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 14053 transitions. Word has length 108 [2021-11-06 19:05:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:48,486 INFO L470 AbstractCegarLoop]: Abstraction has 11076 states and 14053 transitions. [2021-11-06 19:05:48,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 14053 transitions. [2021-11-06 19:05:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 19:05:48,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:48,490 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:48,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 19:05:48,490 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash -86695441, now seen corresponding path program 1 times [2021-11-06 19:05:48,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:48,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582564920] [2021-11-06 19:05:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:48,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:05:48,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:48,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582564920] [2021-11-06 19:05:48,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582564920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:48,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:48,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:48,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017360044] [2021-11-06 19:05:48,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:48,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:48,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:48,775 INFO L87 Difference]: Start difference. First operand 11076 states and 14053 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:51,763 INFO L93 Difference]: Finished difference Result 24478 states and 31119 transitions. [2021-11-06 19:05:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:51,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-11-06 19:05:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:51,786 INFO L225 Difference]: With dead ends: 24478 [2021-11-06 19:05:51,787 INFO L226 Difference]: Without dead ends: 13566 [2021-11-06 19:05:51,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2021-11-06 19:05:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 13524. [2021-11-06 19:05:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13524 states, 13477 states have (on average 1.2700155821028418) internal successors, (17116), 13499 states have internal predecessors, (17116), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:05:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13524 states to 13524 states and 17152 transitions. [2021-11-06 19:05:52,241 INFO L78 Accepts]: Start accepts. Automaton has 13524 states and 17152 transitions. Word has length 140 [2021-11-06 19:05:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:52,241 INFO L470 AbstractCegarLoop]: Abstraction has 13524 states and 17152 transitions. [2021-11-06 19:05:52,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 13524 states and 17152 transitions. [2021-11-06 19:05:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-06 19:05:52,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:52,245 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:52,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 19:05:52,245 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1125790003, now seen corresponding path program 1 times [2021-11-06 19:05:52,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:52,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817179012] [2021-11-06 19:05:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:52,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 19:05:52,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:52,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817179012] [2021-11-06 19:05:52,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817179012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:52,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:52,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:52,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522954906] [2021-11-06 19:05:52,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:52,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:52,410 INFO L87 Difference]: Start difference. First operand 13524 states and 17152 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:55,379 INFO L93 Difference]: Finished difference Result 29350 states and 37269 transitions. [2021-11-06 19:05:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-06 19:05:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:55,404 INFO L225 Difference]: With dead ends: 29350 [2021-11-06 19:05:55,404 INFO L226 Difference]: Without dead ends: 15939 [2021-11-06 19:05:55,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2021-11-06 19:05:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15897. [2021-11-06 19:05:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15850 states have (on average 1.2696529968454258) internal successors, (20124), 15872 states have internal predecessors, (20124), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:05:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 20160 transitions. [2021-11-06 19:05:56,050 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 20160 transitions. Word has length 170 [2021-11-06 19:05:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:05:56,050 INFO L470 AbstractCegarLoop]: Abstraction has 15897 states and 20160 transitions. [2021-11-06 19:05:56,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 20160 transitions. [2021-11-06 19:05:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-06 19:05:56,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:05:56,054 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:05:56,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 19:05:56,054 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:05:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:05:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash 633163829, now seen corresponding path program 1 times [2021-11-06 19:05:56,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:05:56,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136226557] [2021-11-06 19:05:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:05:56,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:05:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 19:05:56,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:56,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136226557] [2021-11-06 19:05:56,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136226557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:56,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:56,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:56,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014762012] [2021-11-06 19:05:56,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:05:56,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:05:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:56,222 INFO L87 Difference]: Start difference. First operand 15897 states and 20160 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:05:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:59,237 INFO L93 Difference]: Finished difference Result 34114 states and 43321 transitions. [2021-11-06 19:05:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:05:59,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-06 19:05:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:59,268 INFO L225 Difference]: With dead ends: 34114 [2021-11-06 19:05:59,268 INFO L226 Difference]: Without dead ends: 18381 [2021-11-06 19:05:59,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:05:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18381 states. [2021-11-06 19:06:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18381 to 18339. [2021-11-06 19:06:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18339 states, 18292 states have (on average 1.2692433850863765) internal successors, (23217), 18314 states have internal predecessors, (23217), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18339 states to 18339 states and 23253 transitions. [2021-11-06 19:06:00,117 INFO L78 Accepts]: Start accepts. Automaton has 18339 states and 23253 transitions. Word has length 170 [2021-11-06 19:06:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:00,117 INFO L470 AbstractCegarLoop]: Abstraction has 18339 states and 23253 transitions. [2021-11-06 19:06:00,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 18339 states and 23253 transitions. [2021-11-06 19:06:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-06 19:06:00,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:00,123 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:00,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 19:06:00,123 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 613054494, now seen corresponding path program 1 times [2021-11-06 19:06:00,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:00,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356294606] [2021-11-06 19:06:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:00,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:00,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:00,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356294606] [2021-11-06 19:06:00,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356294606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:00,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:00,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:00,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638340299] [2021-11-06 19:06:00,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:00,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:00,303 INFO L87 Difference]: Start difference. First operand 18339 states and 23253 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:03,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:03,507 INFO L93 Difference]: Finished difference Result 38986 states and 49483 transitions. [2021-11-06 19:06:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:03,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 213 [2021-11-06 19:06:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:03,535 INFO L225 Difference]: With dead ends: 38986 [2021-11-06 19:06:03,535 INFO L226 Difference]: Without dead ends: 20811 [2021-11-06 19:06:03,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20811 states. [2021-11-06 19:06:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20811 to 20769. [2021-11-06 19:06:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20769 states, 20722 states have (on average 1.269085995560274) internal successors, (26298), 20744 states have internal predecessors, (26298), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20769 states to 20769 states and 26334 transitions. [2021-11-06 19:06:04,224 INFO L78 Accepts]: Start accepts. Automaton has 20769 states and 26334 transitions. Word has length 213 [2021-11-06 19:06:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:04,224 INFO L470 AbstractCegarLoop]: Abstraction has 20769 states and 26334 transitions. [2021-11-06 19:06:04,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 20769 states and 26334 transitions. [2021-11-06 19:06:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-06 19:06:04,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:04,230 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:04,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 19:06:04,231 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash 120428320, now seen corresponding path program 1 times [2021-11-06 19:06:04,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:04,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151926884] [2021-11-06 19:06:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:04,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:04,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:04,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151926884] [2021-11-06 19:06:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151926884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:04,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:04,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:04,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584301295] [2021-11-06 19:06:04,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:04,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:04,422 INFO L87 Difference]: Start difference. First operand 20769 states and 26334 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:07,682 INFO L93 Difference]: Finished difference Result 43852 states and 55657 transitions. [2021-11-06 19:06:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:07,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 213 [2021-11-06 19:06:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:07,717 INFO L225 Difference]: With dead ends: 43852 [2021-11-06 19:06:07,718 INFO L226 Difference]: Without dead ends: 23247 [2021-11-06 19:06:07,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23247 states. [2021-11-06 19:06:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23247 to 23205. [2021-11-06 19:06:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23205 states, 23158 states have (on average 1.2688919595820018) internal successors, (29385), 23180 states have internal predecessors, (29385), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23205 states to 23205 states and 29421 transitions. [2021-11-06 19:06:08,620 INFO L78 Accepts]: Start accepts. Automaton has 23205 states and 29421 transitions. Word has length 213 [2021-11-06 19:06:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:08,622 INFO L470 AbstractCegarLoop]: Abstraction has 23205 states and 29421 transitions. [2021-11-06 19:06:08,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23205 states and 29421 transitions. [2021-11-06 19:06:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-06 19:06:08,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:08,629 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:08,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 19:06:08,630 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:08,630 INFO L85 PathProgramCache]: Analyzing trace with hash -957563151, now seen corresponding path program 1 times [2021-11-06 19:06:08,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:08,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173938968] [2021-11-06 19:06:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:08,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:08,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:08,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173938968] [2021-11-06 19:06:08,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173938968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:08,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:08,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:08,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294554551] [2021-11-06 19:06:08,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:08,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:08,872 INFO L87 Difference]: Start difference. First operand 23205 states and 29421 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:10,700 INFO L93 Difference]: Finished difference Result 67957 states and 86223 transitions. [2021-11-06 19:06:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-06 19:06:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:10,786 INFO L225 Difference]: With dead ends: 67957 [2021-11-06 19:06:10,786 INFO L226 Difference]: Without dead ends: 44916 [2021-11-06 19:06:10,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44916 states. [2021-11-06 19:06:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44916 to 23211. [2021-11-06 19:06:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23211 states, 23164 states have (on average 1.2688223104817822) internal successors, (29391), 23186 states have internal predecessors, (29391), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23211 states to 23211 states and 29427 transitions. [2021-11-06 19:06:12,136 INFO L78 Accepts]: Start accepts. Automaton has 23211 states and 29427 transitions. Word has length 235 [2021-11-06 19:06:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:12,137 INFO L470 AbstractCegarLoop]: Abstraction has 23211 states and 29427 transitions. [2021-11-06 19:06:12,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 23211 states and 29427 transitions. [2021-11-06 19:06:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-06 19:06:12,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:12,154 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:12,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 19:06:12,155 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash -687532564, now seen corresponding path program 1 times [2021-11-06 19:06:12,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:12,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973519028] [2021-11-06 19:06:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:12,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:12,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:12,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973519028] [2021-11-06 19:06:12,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973519028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:12,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:12,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:06:12,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252289261] [2021-11-06 19:06:12,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:12,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:12,377 INFO L87 Difference]: Start difference. First operand 23211 states and 29427 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:15,464 INFO L93 Difference]: Finished difference Result 86883 states and 110142 transitions. [2021-11-06 19:06:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:06:15,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-06 19:06:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:15,577 INFO L225 Difference]: With dead ends: 86883 [2021-11-06 19:06:15,577 INFO L226 Difference]: Without dead ends: 63836 [2021-11-06 19:06:15,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63836 states. [2021-11-06 19:06:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63836 to 23223. [2021-11-06 19:06:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23223 states, 23176 states have (on average 1.268683120469451) internal successors, (29403), 23198 states have internal predecessors, (29403), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23223 states to 23223 states and 29439 transitions. [2021-11-06 19:06:17,439 INFO L78 Accepts]: Start accepts. Automaton has 23223 states and 29439 transitions. Word has length 237 [2021-11-06 19:06:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:17,440 INFO L470 AbstractCegarLoop]: Abstraction has 23223 states and 29439 transitions. [2021-11-06 19:06:17,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 23223 states and 29439 transitions. [2021-11-06 19:06:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-06 19:06:17,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:17,449 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:17,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 19:06:17,449 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 183480992, now seen corresponding path program 1 times [2021-11-06 19:06:17,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:17,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142474130] [2021-11-06 19:06:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:17,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:17,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:17,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142474130] [2021-11-06 19:06:17,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142474130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:17,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:17,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:17,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426474005] [2021-11-06 19:06:17,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:17,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:17,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:17,792 INFO L87 Difference]: Start difference. First operand 23223 states and 29439 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:19,164 INFO L93 Difference]: Finished difference Result 46288 states and 58702 transitions. [2021-11-06 19:06:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:06:19,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-06 19:06:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:19,196 INFO L225 Difference]: With dead ends: 46288 [2021-11-06 19:06:19,197 INFO L226 Difference]: Without dead ends: 23229 [2021-11-06 19:06:19,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23229 states. [2021-11-06 19:06:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23229 to 23229. [2021-11-06 19:06:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 23182 states have (on average 1.2686135795013374) internal successors, (29409), 23204 states have internal predecessors, (29409), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 29445 transitions. [2021-11-06 19:06:20,516 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 29445 transitions. Word has length 237 [2021-11-06 19:06:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 23229 states and 29445 transitions. [2021-11-06 19:06:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 29445 transitions. [2021-11-06 19:06:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-06 19:06:20,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:20,531 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:20,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 19:06:20,531 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -484662460, now seen corresponding path program 1 times [2021-11-06 19:06:20,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:20,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674246127] [2021-11-06 19:06:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:20,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:20,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:20,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674246127] [2021-11-06 19:06:20,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674246127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:20,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:20,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:06:20,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180547316] [2021-11-06 19:06:20,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:20,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:20,781 INFO L87 Difference]: Start difference. First operand 23229 states and 29445 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:25,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:25,013 INFO L93 Difference]: Finished difference Result 86997 states and 110256 transitions. [2021-11-06 19:06:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:06:25,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-06 19:06:25,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:25,134 INFO L225 Difference]: With dead ends: 86997 [2021-11-06 19:06:25,134 INFO L226 Difference]: Without dead ends: 63932 [2021-11-06 19:06:25,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63932 states. [2021-11-06 19:06:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63932 to 23241. [2021-11-06 19:06:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23241 states, 23194 states have (on average 1.2684746055014229) internal successors, (29421), 23216 states have internal predecessors, (29421), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23241 states to 23241 states and 29457 transitions. [2021-11-06 19:06:26,845 INFO L78 Accepts]: Start accepts. Automaton has 23241 states and 29457 transitions. Word has length 238 [2021-11-06 19:06:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:26,845 INFO L470 AbstractCegarLoop]: Abstraction has 23241 states and 29457 transitions. [2021-11-06 19:06:26,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23241 states and 29457 transitions. [2021-11-06 19:06:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-06 19:06:26,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:26,852 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:26,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 19:06:26,852 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1053554916, now seen corresponding path program 1 times [2021-11-06 19:06:26,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:26,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551582907] [2021-11-06 19:06:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:26,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-06 19:06:27,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:27,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551582907] [2021-11-06 19:06:27,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551582907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:27,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:27,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:06:27,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441725493] [2021-11-06 19:06:27,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:06:27,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:06:27,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:06:27,057 INFO L87 Difference]: Start difference. First operand 23241 states and 29457 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:06:32,768 INFO L93 Difference]: Finished difference Result 67426 states and 85480 transitions. [2021-11-06 19:06:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 19:06:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 239 [2021-11-06 19:06:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:06:32,837 INFO L225 Difference]: With dead ends: 67426 [2021-11-06 19:06:32,837 INFO L226 Difference]: Without dead ends: 44349 [2021-11-06 19:06:32,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:06:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44349 states. [2021-11-06 19:06:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44349 to 25638. [2021-11-06 19:06:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25638 states, 25591 states have (on average 1.2687663631745536) internal successors, (32469), 25613 states have internal predecessors, (32469), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-06 19:06:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25638 states to 25638 states and 32505 transitions. [2021-11-06 19:06:34,582 INFO L78 Accepts]: Start accepts. Automaton has 25638 states and 32505 transitions. Word has length 239 [2021-11-06 19:06:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:06:34,582 INFO L470 AbstractCegarLoop]: Abstraction has 25638 states and 32505 transitions. [2021-11-06 19:06:34,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:06:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 25638 states and 32505 transitions. [2021-11-06 19:06:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-06 19:06:34,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:06:34,589 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:06:34,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 19:06:34,589 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting check_sigErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 19:06:34,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:06:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1369646066, now seen corresponding path program 1 times [2021-11-06 19:06:34,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:06:34,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744512238] [2021-11-06 19:06:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:06:34,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:06:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:06:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 19:06:34,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:06:34,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744512238] [2021-11-06 19:06:34,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744512238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:06:34,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:06:34,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:06:34,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838212642] [2021-11-06 19:06:34,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:06:34,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:06:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:06:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:06:34,783 INFO L87 Difference]: Start difference. First operand 25638 states and 32505 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)