./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-dlink-sundance.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-dlink-sundance.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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:58:47,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:58:47,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:58:47,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:58:47,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:58:47,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:58:47,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:58:47,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:58:47,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:58:47,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:58:47,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:58:47,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:58:47,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:58:47,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:58:47,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:58:47,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:58:47,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:58:47,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:58:47,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:58:47,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:58:47,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:58:47,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:58:47,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:58:47,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:58:47,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:58:47,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:58:47,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:58:47,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:58:47,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:58:47,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:58:47,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:58:47,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:58:47,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:58:47,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:58:47,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:58:47,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:58:47,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:58:47,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:58:47,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:58:47,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:58:47,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:58:47,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:58:47,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:58:47,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:58:47,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:58:47,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:58:47,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:58:47,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:58:47,999 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:58:48,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:58:48,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:58:48,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:58:48,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:58:48,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:58:48,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:58:48,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:58:48,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:58:48,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:58:48,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:58:48,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:58:48,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:58:48,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:58:48,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:58:48,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:58:48,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:58:48,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:58:48,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:58:48,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:58:48,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:58:48,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:58:48,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:58:48,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-06 18:58:48,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:58:48,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:58:48,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:58:48,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:58:48,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:58:48,186 INFO L432 ainManager$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-dlink-sundance.cil.i [2021-11-06 18:58:48,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8686c002/d1e5a4c400e549c99980a8624a54e6bb/FLAG43d82572d [2021-11-06 18:58:48,841 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:58:48,843 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-dlink-sundance.cil.i [2021-11-06 18:58:48,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8686c002/d1e5a4c400e549c99980a8624a54e6bb/FLAG43d82572d [2021-11-06 18:58:49,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8686c002/d1e5a4c400e549c99980a8624a54e6bb [2021-11-06 18:58:49,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:58:49,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:58:49,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:58:49,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:58:49,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:58:49,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:58:49" (1/1) ... [2021-11-06 18:58:49,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565653dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:49, skipping insertion in model container [2021-11-06 18:58:49,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:58:49" (1/1) ... [2021-11-06 18:58:49,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:58:49,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:58:51,161 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-dlink-sundance.cil.i[349228,349241] [2021-11-06 18:58:51,168 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-dlink-sundance.cil.i[349397,349410] [2021-11-06 18:58:51,169 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-dlink-sundance.cil.i[349564,349577] [2021-11-06 18:58:51,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-06 18:58:51,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:58:51,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:58:51,507 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-dlink-sundance.cil.i[349228,349241] [2021-11-06 18:58:51,509 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-dlink-sundance.cil.i[349397,349410] [2021-11-06 18:58:51,509 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-dlink-sundance.cil.i[349564,349577] [2021-11-06 18:58:51,509 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-dlink-sundance.cil.i[349732,349745] [2021-11-06 18:58:51,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:58:51,658 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:58:51,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51 WrapperNode [2021-11-06 18:58:51,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:58:51,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:58:51,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:58:51,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:58:51,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:51,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:58:52,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:58:52,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:58:52,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:58:52,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:52,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:53,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:58:53,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:58:53,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:58:53,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:58:53,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (1/1) ... [2021-11-06 18:58:53,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:58:53,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:58:53,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:58:53,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:58:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:58:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:58:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:58:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:58:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:58:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:58:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:58:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:58:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:00:26,142 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:00:26,143 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:00:26,143 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:00:26,143 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:00:26,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:00:26,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:00:26,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:00:26,170 INFO L299 CfgBuilder]: Removed 4962 assume(true) statements. [2021-11-06 19:00:26,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:26 BoogieIcfgContainer [2021-11-06 19:00:26,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:00:26,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:00:26,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:00:26,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:00:26,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:58:49" (1/3) ... [2021-11-06 19:00:26,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1523908a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:26, skipping insertion in model container [2021-11-06 19:00:26,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:58:51" (2/3) ... [2021-11-06 19:00:26,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1523908a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:26, skipping insertion in model container [2021-11-06 19:00:26,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:26" (3/3) ... [2021-11-06 19:00:26,191 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-06 19:00:26,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:00:26,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-11-06 19:00:26,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:00:26,244 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 19:00:26,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-11-06 19:00:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 4352 states, 4273 states have (on average 1.3213199157500586) internal successors, (5646), 4351 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states 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 19:00:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 19:00:26,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:26,306 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] [2021-11-06 19:00:26,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1806629518, now seen corresponding path program 1 times [2021-11-06 19:00:26,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:26,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50462634] [2021-11-06 19:00:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:26,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:26,936 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 19:00:26,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:26,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50462634] [2021-11-06 19:00:26,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50462634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:26,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:26,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:26,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434673760] [2021-11-06 19:00:26,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:26,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:26,965 INFO L87 Difference]: Start difference. First operand has 4352 states, 4273 states have (on average 1.3213199157500586) internal successors, (5646), 4351 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 19:00:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:29,492 INFO L93 Difference]: Finished difference Result 12470 states and 16187 transitions. [2021-11-06 19:00:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:29,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-06 19:00:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:29,538 INFO L225 Difference]: With dead ends: 12470 [2021-11-06 19:00:29,538 INFO L226 Difference]: Without dead ends: 7938 [2021-11-06 19:00:29,557 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 19:00:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2021-11-06 19:00:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7858. [2021-11-06 19:00:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7779 states have (on average 1.2610875433860393) internal successors, (9810), 7857 states have internal predecessors, (9810), 0 states have call successors, (0), 0 states 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 19:00:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 9810 transitions. [2021-11-06 19:00:29,810 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 9810 transitions. Word has length 57 [2021-11-06 19:00:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:29,811 INFO L470 AbstractCegarLoop]: Abstraction has 7858 states and 9810 transitions. [2021-11-06 19:00:29,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 19:00:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 9810 transitions. [2021-11-06 19:00:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 19:00:29,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:29,816 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] [2021-11-06 19:00:29,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:00:29,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:29,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1518682448, now seen corresponding path program 1 times [2021-11-06 19:00:29,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:29,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171933967] [2021-11-06 19:00:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:29,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:30,192 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 19:00:30,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:30,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171933967] [2021-11-06 19:00:30,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171933967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:30,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:30,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:30,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380098872] [2021-11-06 19:00:30,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:30,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:30,197 INFO L87 Difference]: Start difference. First operand 7858 states and 9810 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 19:00:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:32,939 INFO L93 Difference]: Finished difference Result 21480 states and 26822 transitions. [2021-11-06 19:00:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-06 19:00:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:32,981 INFO L225 Difference]: With dead ends: 21480 [2021-11-06 19:00:32,982 INFO L226 Difference]: Without dead ends: 13730 [2021-11-06 19:00:33,000 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 19:00:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13730 states. [2021-11-06 19:00:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13730 to 12996. [2021-11-06 19:00:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12996 states, 12917 states have (on average 1.262831926918015) internal successors, (16312), 12995 states have internal predecessors, (16312), 0 states have call successors, (0), 0 states 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 19:00:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 16312 transitions. [2021-11-06 19:00:33,277 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 16312 transitions. Word has length 63 [2021-11-06 19:00:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:33,277 INFO L470 AbstractCegarLoop]: Abstraction has 12996 states and 16312 transitions. [2021-11-06 19:00:33,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 19:00:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 16312 transitions. [2021-11-06 19:00:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 19:00:33,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:33,279 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] [2021-11-06 19:00:33,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:00:33,283 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -578711267, now seen corresponding path program 1 times [2021-11-06 19:00:33,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:33,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315195666] [2021-11-06 19:00:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:33,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:33,530 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 19:00:33,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:33,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315195666] [2021-11-06 19:00:33,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315195666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:33,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:33,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:33,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536935171] [2021-11-06 19:00:33,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:33,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:33,532 INFO L87 Difference]: Start difference. First operand 12996 states and 16312 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 19:00:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:36,385 INFO L93 Difference]: Finished difference Result 36598 states and 45978 transitions. [2021-11-06 19:00:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-06 19:00:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:36,455 INFO L225 Difference]: With dead ends: 36598 [2021-11-06 19:00:36,455 INFO L226 Difference]: Without dead ends: 23710 [2021-11-06 19:00:36,486 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 19:00:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23710 states. [2021-11-06 19:00:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23710 to 22878. [2021-11-06 19:00:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22878 states, 22799 states have (on average 1.2666345015132243) internal successors, (28878), 22877 states have internal predecessors, (28878), 0 states have call successors, (0), 0 states 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 19:00:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22878 states to 22878 states and 28878 transitions. [2021-11-06 19:00:37,079 INFO L78 Accepts]: Start accepts. Automaton has 22878 states and 28878 transitions. Word has length 64 [2021-11-06 19:00:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:37,080 INFO L470 AbstractCegarLoop]: Abstraction has 22878 states and 28878 transitions. [2021-11-06 19:00:37,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 19:00:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 22878 states and 28878 transitions. [2021-11-06 19:00:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 19:00:37,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:37,082 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] [2021-11-06 19:00:37,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:00:37,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1120258482, now seen corresponding path program 1 times [2021-11-06 19:00:37,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:37,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406063500] [2021-11-06 19:00:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:37,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:37,320 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 19:00:37,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:37,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406063500] [2021-11-06 19:00:37,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406063500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:37,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:37,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530072676] [2021-11-06 19:00:37,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:37,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:37,324 INFO L87 Difference]: Start difference. First operand 22878 states and 28878 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 19:00:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:40,070 INFO L93 Difference]: Finished difference Result 38703 states and 48893 transitions. [2021-11-06 19:00:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:40,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-06 19:00:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:40,114 INFO L225 Difference]: With dead ends: 38703 [2021-11-06 19:00:40,114 INFO L226 Difference]: Without dead ends: 15933 [2021-11-06 19:00:40,148 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 19:00:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15933 states. [2021-11-06 19:00:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15933 to 15803. [2021-11-06 19:00:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15803 states, 15724 states have (on average 1.2688247265326889) internal successors, (19951), 15802 states have internal predecessors, (19951), 0 states have call successors, (0), 0 states 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 19:00:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15803 states to 15803 states and 19951 transitions. [2021-11-06 19:00:40,490 INFO L78 Accepts]: Start accepts. Automaton has 15803 states and 19951 transitions. Word has length 71 [2021-11-06 19:00:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:40,490 INFO L470 AbstractCegarLoop]: Abstraction has 15803 states and 19951 transitions. [2021-11-06 19:00:40,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 19:00:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15803 states and 19951 transitions. [2021-11-06 19:00:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:00:40,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:40,494 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, 1, 1, 1] [2021-11-06 19:00:40,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:00:40,494 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:40,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1794554846, now seen corresponding path program 1 times [2021-11-06 19:00:40,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:40,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285530979] [2021-11-06 19:00:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:40,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:40,711 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 19:00:40,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:40,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285530979] [2021-11-06 19:00:40,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285530979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:40,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:40,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:40,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406117096] [2021-11-06 19:00:40,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:40,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:40,712 INFO L87 Difference]: Start difference. First operand 15803 states and 19951 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:43,399 INFO L93 Difference]: Finished difference Result 46089 states and 58300 transitions. [2021-11-06 19:00:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-06 19:00:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:43,461 INFO L225 Difference]: With dead ends: 46089 [2021-11-06 19:00:43,461 INFO L226 Difference]: Without dead ends: 30719 [2021-11-06 19:00:43,494 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 19:00:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30719 states. [2021-11-06 19:00:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30719 to 30639. [2021-11-06 19:00:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30639 states, 30560 states have (on average 1.2696335078534031) internal successors, (38800), 30638 states have internal predecessors, (38800), 0 states have call successors, (0), 0 states 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 19:00:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30639 states to 30639 states and 38800 transitions. [2021-11-06 19:00:44,128 INFO L78 Accepts]: Start accepts. Automaton has 30639 states and 38800 transitions. Word has length 86 [2021-11-06 19:00:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:44,129 INFO L470 AbstractCegarLoop]: Abstraction has 30639 states and 38800 transitions. [2021-11-06 19:00:44,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 30639 states and 38800 transitions. [2021-11-06 19:00:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:00:44,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:44,134 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, 1, 1, 1] [2021-11-06 19:00:44,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:00:44,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash 514691168, now seen corresponding path program 1 times [2021-11-06 19:00:44,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:44,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962751420] [2021-11-06 19:00:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:44,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:44,349 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 19:00:44,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:44,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962751420] [2021-11-06 19:00:44,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962751420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:44,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:44,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:44,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842847554] [2021-11-06 19:00:44,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:44,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:44,352 INFO L87 Difference]: Start difference. First operand 30639 states and 38800 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:47,212 INFO L93 Difference]: Finished difference Result 75769 states and 96014 transitions. [2021-11-06 19:00:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-06 19:00:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:47,289 INFO L225 Difference]: With dead ends: 75769 [2021-11-06 19:00:47,289 INFO L226 Difference]: Without dead ends: 45563 [2021-11-06 19:00:47,341 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 19:00:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45563 states. [2021-11-06 19:00:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45563 to 45434. [2021-11-06 19:00:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45434 states, 45355 states have (on average 1.2701576452430823) internal successors, (57608), 45433 states have internal predecessors, (57608), 0 states have call successors, (0), 0 states 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 19:00:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45434 states to 45434 states and 57608 transitions. [2021-11-06 19:00:48,267 INFO L78 Accepts]: Start accepts. Automaton has 45434 states and 57608 transitions. Word has length 86 [2021-11-06 19:00:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:48,268 INFO L470 AbstractCegarLoop]: Abstraction has 45434 states and 57608 transitions. [2021-11-06 19:00:48,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 45434 states and 57608 transitions. [2021-11-06 19:00:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 19:00:48,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:48,273 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] [2021-11-06 19:00:48,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:00:48,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:48,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 496418719, now seen corresponding path program 1 times [2021-11-06 19:00:48,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:48,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332737086] [2021-11-06 19:00:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:48,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:48,555 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 19:00:48,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:48,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332737086] [2021-11-06 19:00:48,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332737086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:48,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:48,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:48,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089960757] [2021-11-06 19:00:48,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:48,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:48,556 INFO L87 Difference]: Start difference. First operand 45434 states and 57608 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:49,553 INFO L93 Difference]: Finished difference Result 45434 states and 57608 transitions. [2021-11-06 19:00:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 19:00:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:49,646 INFO L225 Difference]: With dead ends: 45434 [2021-11-06 19:00:49,646 INFO L226 Difference]: Without dead ends: 45428 [2021-11-06 19:00:49,671 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 19:00:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45428 states. [2021-11-06 19:00:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45428 to 45428. [2021-11-06 19:00:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45428 states, 45352 states have (on average 1.270109366731346) internal successors, (57602), 45427 states have internal predecessors, (57602), 0 states have call successors, (0), 0 states 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 19:00:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45428 states to 45428 states and 57602 transitions. [2021-11-06 19:00:50,620 INFO L78 Accepts]: Start accepts. Automaton has 45428 states and 57602 transitions. Word has length 87 [2021-11-06 19:00:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:50,621 INFO L470 AbstractCegarLoop]: Abstraction has 45428 states and 57602 transitions. [2021-11-06 19:00:50,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 45428 states and 57602 transitions. [2021-11-06 19:00:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 19:00:50,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:50,625 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] [2021-11-06 19:00:50,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:00:50,626 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 317170018, now seen corresponding path program 1 times [2021-11-06 19:00:50,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:50,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915370866] [2021-11-06 19:00:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:50,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:50,919 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 19:00:50,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:50,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915370866] [2021-11-06 19:00:50,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915370866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:50,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:50,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:50,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087964978] [2021-11-06 19:00:50,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:50,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:50,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:50,920 INFO L87 Difference]: Start difference. First operand 45428 states and 57602 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:51,969 INFO L93 Difference]: Finished difference Result 45428 states and 57602 transitions. [2021-11-06 19:00:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:51,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-06 19:00:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:52,045 INFO L225 Difference]: With dead ends: 45428 [2021-11-06 19:00:52,046 INFO L226 Difference]: Without dead ends: 45422 [2021-11-06 19:00:52,062 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 19:00:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45422 states. [2021-11-06 19:00:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45422 to 45422. [2021-11-06 19:00:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45422 states, 45349 states have (on average 1.270061081832014) internal successors, (57596), 45421 states have internal predecessors, (57596), 0 states have call successors, (0), 0 states 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 19:00:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45422 states to 45422 states and 57596 transitions. [2021-11-06 19:00:53,390 INFO L78 Accepts]: Start accepts. Automaton has 45422 states and 57596 transitions. Word has length 89 [2021-11-06 19:00:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:53,391 INFO L470 AbstractCegarLoop]: Abstraction has 45422 states and 57596 transitions. [2021-11-06 19:00:53,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 45422 states and 57596 transitions. [2021-11-06 19:00:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 19:00:53,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:53,393 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] [2021-11-06 19:00:53,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:00:53,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash -142139483, now seen corresponding path program 1 times [2021-11-06 19:00:53,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:53,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859330768] [2021-11-06 19:00:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:53,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:53,673 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 19:00:53,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:53,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859330768] [2021-11-06 19:00:53,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859330768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:53,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:53,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:53,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387204355] [2021-11-06 19:00:53,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:53,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:53,674 INFO L87 Difference]: Start difference. First operand 45422 states and 57596 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:54,622 INFO L93 Difference]: Finished difference Result 45422 states and 57596 transitions. [2021-11-06 19:00:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 19:00:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:54,689 INFO L225 Difference]: With dead ends: 45422 [2021-11-06 19:00:54,690 INFO L226 Difference]: Without dead ends: 45416 [2021-11-06 19:00:54,705 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 19:00:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45416 states. [2021-11-06 19:00:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45416 to 45416. [2021-11-06 19:00:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45416 states, 45346 states have (on average 1.2700127905438185) internal successors, (57590), 45415 states have internal predecessors, (57590), 0 states have call successors, (0), 0 states 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 19:00:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45416 states to 45416 states and 57590 transitions. [2021-11-06 19:00:55,888 INFO L78 Accepts]: Start accepts. Automaton has 45416 states and 57590 transitions. Word has length 91 [2021-11-06 19:00:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:55,889 INFO L470 AbstractCegarLoop]: Abstraction has 45416 states and 57590 transitions. [2021-11-06 19:00:55,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 45416 states and 57590 transitions. [2021-11-06 19:00:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 19:00:55,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:55,892 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] [2021-11-06 19:00:55,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:00:55,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 843061864, now seen corresponding path program 1 times [2021-11-06 19:00:55,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:55,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762761769] [2021-11-06 19:00:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:55,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:56,168 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 19:00:56,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:56,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762761769] [2021-11-06 19:00:56,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762761769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:56,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:56,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:56,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611235553] [2021-11-06 19:00:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:56,170 INFO L87 Difference]: Start difference. First operand 45416 states and 57590 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:57,302 INFO L93 Difference]: Finished difference Result 45416 states and 57590 transitions. [2021-11-06 19:00:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:57,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 19:00:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:57,375 INFO L225 Difference]: With dead ends: 45416 [2021-11-06 19:00:57,375 INFO L226 Difference]: Without dead ends: 45410 [2021-11-06 19:00:57,396 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 19:00:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45410 states. [2021-11-06 19:00:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45410 to 45410. [2021-11-06 19:00:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45410 states, 45343 states have (on average 1.2699644928654918) internal successors, (57584), 45409 states have internal predecessors, (57584), 0 states have call successors, (0), 0 states 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 19:00:58,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45410 states to 45410 states and 57584 transitions. [2021-11-06 19:00:58,552 INFO L78 Accepts]: Start accepts. Automaton has 45410 states and 57584 transitions. Word has length 93 [2021-11-06 19:00:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:58,552 INFO L470 AbstractCegarLoop]: Abstraction has 45410 states and 57584 transitions. [2021-11-06 19:00:58,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 45410 states and 57584 transitions. [2021-11-06 19:00:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 19:00:58,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:58,555 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] [2021-11-06 19:00:58,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:00:58,556 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:00:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1566215765, now seen corresponding path program 1 times [2021-11-06 19:00:58,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:58,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098795715] [2021-11-06 19:00:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:58,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:58,790 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 19:00:58,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:58,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098795715] [2021-11-06 19:00:58,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098795715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:58,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:58,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:58,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366959266] [2021-11-06 19:00:58,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:58,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:58,791 INFO L87 Difference]: Start difference. First operand 45410 states and 57584 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:01:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:01:00,097 INFO L93 Difference]: Finished difference Result 45410 states and 57584 transitions. [2021-11-06 19:01:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:01:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-06 19:01:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:01:00,165 INFO L225 Difference]: With dead ends: 45410 [2021-11-06 19:01:00,165 INFO L226 Difference]: Without dead ends: 45404 [2021-11-06 19:01:00,179 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 19:01:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45404 states. [2021-11-06 19:01:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45404 to 45404. [2021-11-06 19:01:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45404 states, 45340 states have (on average 1.2699161887957653) internal successors, (57578), 45403 states have internal predecessors, (57578), 0 states have call successors, (0), 0 states 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 19:01:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45404 states to 45404 states and 57578 transitions. [2021-11-06 19:01:01,449 INFO L78 Accepts]: Start accepts. Automaton has 45404 states and 57578 transitions. Word has length 95 [2021-11-06 19:01:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:01:01,450 INFO L470 AbstractCegarLoop]: Abstraction has 45404 states and 57578 transitions. [2021-11-06 19:01:01,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:01:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 45404 states and 57578 transitions. [2021-11-06 19:01:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 19:01:01,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:01:01,453 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] [2021-11-06 19:01:01,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:01:01,454 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:01:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:01:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1894644370, now seen corresponding path program 1 times [2021-11-06 19:01:01,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:01:01,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406206365] [2021-11-06 19:01:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:01:01,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:01:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:01:01,720 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 19:01:01,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:01:01,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406206365] [2021-11-06 19:01:01,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406206365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:01:01,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:01:01,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:01:01,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434157755] [2021-11-06 19:01:01,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:01:01,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:01:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:01:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:01:01,722 INFO L87 Difference]: Start difference. First operand 45404 states and 57578 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:01:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:01:03,041 INFO L93 Difference]: Finished difference Result 45404 states and 57578 transitions. [2021-11-06 19:01:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:01:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 19:01:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:01:03,112 INFO L225 Difference]: With dead ends: 45404 [2021-11-06 19:01:03,112 INFO L226 Difference]: Without dead ends: 45398 [2021-11-06 19:01:03,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:01:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45398 states. [2021-11-06 19:01:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45398 to 45398. [2021-11-06 19:01:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45398 states, 45337 states have (on average 1.2698678783333701) internal successors, (57572), 45397 states have internal predecessors, (57572), 0 states have call successors, (0), 0 states 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 19:01:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45398 states to 45398 states and 57572 transitions. [2021-11-06 19:01:04,494 INFO L78 Accepts]: Start accepts. Automaton has 45398 states and 57572 transitions. Word has length 97 [2021-11-06 19:01:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:01:04,495 INFO L470 AbstractCegarLoop]: Abstraction has 45398 states and 57572 transitions. [2021-11-06 19:01:04,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:01:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 45398 states and 57572 transitions. [2021-11-06 19:01:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 19:01:04,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:01:04,499 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] [2021-11-06 19:01:04,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:01:04,499 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:01:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:01:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash 313046449, now seen corresponding path program 1 times [2021-11-06 19:01:04,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:01:04,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008547909] [2021-11-06 19:01:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:01:04,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:01:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:01:04,744 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 19:01:04,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:01:04,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008547909] [2021-11-06 19:01:04,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008547909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:01:04,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:01:04,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:01:04,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569195443] [2021-11-06 19:01:04,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:01:04,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:01:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:01:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:01:04,745 INFO L87 Difference]: Start difference. First operand 45398 states and 57572 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:01:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:01:06,528 INFO L93 Difference]: Finished difference Result 45398 states and 57572 transitions. [2021-11-06 19:01:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:01:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-06 19:01:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:01:06,596 INFO L225 Difference]: With dead ends: 45398 [2021-11-06 19:01:06,597 INFO L226 Difference]: Without dead ends: 45392 [2021-11-06 19:01:06,615 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 19:01:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45392 states. [2021-11-06 19:01:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45392 to 45392. [2021-11-06 19:01:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45392 states, 45334 states have (on average 1.2698195614770371) internal successors, (57566), 45391 states have internal predecessors, (57566), 0 states have call successors, (0), 0 states 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 19:01:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45392 states to 45392 states and 57566 transitions. [2021-11-06 19:01:07,993 INFO L78 Accepts]: Start accepts. Automaton has 45392 states and 57566 transitions. Word has length 99 [2021-11-06 19:01:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:01:07,993 INFO L470 AbstractCegarLoop]: Abstraction has 45392 states and 57566 transitions. [2021-11-06 19:01:07,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:01:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 45392 states and 57566 transitions. [2021-11-06 19:01:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 19:01:07,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:01:07,997 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] [2021-11-06 19:01:07,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:01:07,998 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:01:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:01:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash 190079604, now seen corresponding path program 1 times [2021-11-06 19:01:07,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:01:07,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417915750] [2021-11-06 19:01:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:01:07,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:01:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:01:08,236 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 19:01:08,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:01:08,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417915750] [2021-11-06 19:01:08,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417915750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:01:08,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:01:08,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:01:08,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016440649] [2021-11-06 19:01:08,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:01:08,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:01:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:01:08,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:01:08,238 INFO L87 Difference]: Start difference. First operand 45392 states and 57566 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:01:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:01:09,694 INFO L93 Difference]: Finished difference Result 45392 states and 57566 transitions. [2021-11-06 19:01:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:01:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 101 [2021-11-06 19:01:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:01:09,756 INFO L225 Difference]: With dead ends: 45392 [2021-11-06 19:01:09,756 INFO L226 Difference]: Without dead ends: 45386 [2021-11-06 19:01:09,769 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 19:01:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45386 states. [2021-11-06 19:01:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45386 to 45386. [2021-11-06 19:01:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45386 states, 45331 states have (on average 1.2697712382254969) internal successors, (57560), 45385 states have internal predecessors, (57560), 0 states have call successors, (0), 0 states 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 19:01:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45386 states to 45386 states and 57560 transitions. [2021-11-06 19:01:11,215 INFO L78 Accepts]: Start accepts. Automaton has 45386 states and 57560 transitions. Word has length 101 [2021-11-06 19:01:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:01:11,215 INFO L470 AbstractCegarLoop]: Abstraction has 45386 states and 57560 transitions. [2021-11-06 19:01:11,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:01:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 45386 states and 57560 transitions. [2021-11-06 19:01:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 19:01:11,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:01:11,219 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] [2021-11-06 19:01:11,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:01:11,219 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-06 19:01:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:01:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1187624467, now seen corresponding path program 1 times [2021-11-06 19:01:11,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:01:11,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115229475] [2021-11-06 19:01:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:01:11,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:01:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:01:11,443 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 19:01:11,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:01:11,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115229475] [2021-11-06 19:01:11,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115229475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:01:11,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:01:11,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:01:11,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067288183] [2021-11-06 19:01:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:01:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:01:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:01:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:01:11,445 INFO L87 Difference]: Start difference. First operand 45386 states and 57560 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)