./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.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 a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:49:33,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:49:33,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:49:33,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:49:33,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:49:33,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:49:33,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:49:33,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:49:33,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:49:33,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:49:33,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:49:33,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:49:33,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:49:33,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:49:33,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:49:33,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:49:33,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:49:33,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:49:33,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:49:33,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:49:33,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:49:33,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:49:33,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:49:33,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:49:33,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:49:33,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:49:33,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:49:33,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:49:33,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:49:33,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:49:33,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:49:33,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:49:33,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:49:33,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:49:33,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:49:33,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:49:33,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:49:33,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:49:33,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:49:33,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:49:33,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:49:33,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:49:33,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:49:33,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:49:33,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:49:33,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:49:33,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:49:33,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:49:33,152 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:49:33,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:49:33,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:49:33,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:49:33,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:49:33,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:49:33,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:49:33,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:49:33,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:49:33,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:49:33,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:49:33,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:49:33,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:49:33,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:49:33,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:49:33,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:49:33,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:49:33,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:49:33,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:49:33,156 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:49:33,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:49:33,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:49:33,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:49:33,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2021-11-06 14:49:33,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:49:33,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:49:33,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:49:33,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:49:33,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:49:33,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-06 14:49:33,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9af5e6862/7806b4b542b5481e933ed781dc87d39a/FLAG3e0d84594 [2021-11-06 14:49:34,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:49:34,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-06 14:49:34,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9af5e6862/7806b4b542b5481e933ed781dc87d39a/FLAG3e0d84594 [2021-11-06 14:49:34,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9af5e6862/7806b4b542b5481e933ed781dc87d39a [2021-11-06 14:49:34,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:49:34,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:49:34,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:49:34,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:49:34,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:49:34,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:49:34" (1/1) ... [2021-11-06 14:49:34,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7418b61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:34, skipping insertion in model container [2021-11-06 14:49:34,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:49:34" (1/1) ... [2021-11-06 14:49:34,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:49:34,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:49:34,954 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-11-06 14:49:34,954 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2021-11-06 14:49:35,258 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2021-11-06 14:49:36,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:49:36,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:49:36,205 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-11-06 14:49:36,205 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2021-11-06 14:49:36,237 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2021-11-06 14:49:36,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:49:36,542 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:49:36,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36 WrapperNode [2021-11-06 14:49:36,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:49:36,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:49:36,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:49:36,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:49:36,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:36,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:36,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:49:36,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:49:36,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:49:36,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:49:36,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:36,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:49:37,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:49:37,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:49:37,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:49:37,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (1/1) ... [2021-11-06 14:49:37,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:49:37,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:37,480 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 14:49:37,484 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 14:49:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:49:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:49:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:49:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:49:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:49:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:49:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:49:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:49:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:49:59,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:49:59,626 INFO L299 CfgBuilder]: Removed 3092 assume(true) statements. [2021-11-06 14:49:59,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:49:59 BoogieIcfgContainer [2021-11-06 14:49:59,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:49:59,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:49:59,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:49:59,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:49:59,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:49:34" (1/3) ... [2021-11-06 14:49:59,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f23b2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:49:59, skipping insertion in model container [2021-11-06 14:49:59,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:36" (2/3) ... [2021-11-06 14:49:59,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f23b2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:49:59, skipping insertion in model container [2021-11-06 14:49:59,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:49:59" (3/3) ... [2021-11-06 14:49:59,636 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-06 14:49:59,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:49:59,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-06 14:49:59,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:49:59,679 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 14:49:59,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-06 14:49:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 2705 states, 2687 states have (on average 1.3569036099739487) internal successors, (3646), 2704 states have internal predecessors, (3646), 0 states have call successors, (0), 0 states 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 14:49:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 14:49:59,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:59,729 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] [2021-11-06 14:49:59,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:49:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1458939173, now seen corresponding path program 1 times [2021-11-06 14:49:59,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:59,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673121091] [2021-11-06 14:49:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:59,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:00,178 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 14:50:00,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:00,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673121091] [2021-11-06 14:50:00,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673121091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:00,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:00,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:50:00,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874151409] [2021-11-06 14:50:00,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:00,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:00,204 INFO L87 Difference]: Start difference. First operand has 2705 states, 2687 states have (on average 1.3569036099739487) internal successors, (3646), 2704 states have internal predecessors, (3646), 0 states have call successors, (0), 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 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 14:50:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:00,553 INFO L93 Difference]: Finished difference Result 7134 states and 9621 transitions. [2021-11-06 14:50:00,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:00,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-06 14:50:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:00,576 INFO L225 Difference]: With dead ends: 7134 [2021-11-06 14:50:00,576 INFO L226 Difference]: Without dead ends: 4366 [2021-11-06 14:50:00,586 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 14:50:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-11-06 14:50:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4261. [2021-11-06 14:50:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 4244 states have (on average 1.3192742695570217) internal successors, (5599), 4260 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states 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 14:50:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 5599 transitions. [2021-11-06 14:50:00,715 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 5599 transitions. Word has length 61 [2021-11-06 14:50:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:00,716 INFO L470 AbstractCegarLoop]: Abstraction has 4261 states and 5599 transitions. [2021-11-06 14:50:00,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 14:50:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 5599 transitions. [2021-11-06 14:50:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 14:50:00,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:00,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:00,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:50:00,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:00,723 INFO L85 PathProgramCache]: Analyzing trace with hash -336153488, now seen corresponding path program 1 times [2021-11-06 14:50:00,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:00,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369260390] [2021-11-06 14:50:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:00,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:00,892 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 14:50:00,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:00,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369260390] [2021-11-06 14:50:00,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369260390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:00,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:00,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:50:00,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927894004] [2021-11-06 14:50:00,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:00,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:00,896 INFO L87 Difference]: Start difference. First operand 4261 states and 5599 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 14:50:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:01,183 INFO L93 Difference]: Finished difference Result 9389 states and 12392 transitions. [2021-11-06 14:50:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-06 14:50:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:01,198 INFO L225 Difference]: With dead ends: 9389 [2021-11-06 14:50:01,199 INFO L226 Difference]: Without dead ends: 5218 [2021-11-06 14:50:01,207 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 14:50:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2021-11-06 14:50:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 5214. [2021-11-06 14:50:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5197 states have (on average 1.3259572830479123) internal successors, (6891), 5213 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states 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 14:50:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 6891 transitions. [2021-11-06 14:50:01,329 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 6891 transitions. Word has length 73 [2021-11-06 14:50:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:01,329 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 6891 transitions. [2021-11-06 14:50:01,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 14:50:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 6891 transitions. [2021-11-06 14:50:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 14:50:01,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:01,332 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:01,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:50:01,333 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash 263174938, now seen corresponding path program 1 times [2021-11-06 14:50:01,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:01,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141553797] [2021-11-06 14:50:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:01,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:50:01,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:01,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141553797] [2021-11-06 14:50:01,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141553797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:01,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:01,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:50:01,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606400293] [2021-11-06 14:50:01,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:50:01,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:50:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:50:01,513 INFO L87 Difference]: Start difference. First operand 5214 states and 6891 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 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 14:50:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:03,809 INFO L93 Difference]: Finished difference Result 10346 states and 13688 transitions. [2021-11-06 14:50:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:50:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 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 90 [2021-11-06 14:50:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:03,824 INFO L225 Difference]: With dead ends: 10346 [2021-11-06 14:50:03,824 INFO L226 Difference]: Without dead ends: 5214 [2021-11-06 14:50:03,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:50:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2021-11-06 14:50:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5214. [2021-11-06 14:50:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5197 states have (on average 1.3244179334231287) internal successors, (6883), 5213 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states 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 14:50:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 6883 transitions. [2021-11-06 14:50:03,962 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 6883 transitions. Word has length 90 [2021-11-06 14:50:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:03,964 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 6883 transitions. [2021-11-06 14:50:03,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 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 14:50:03,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 6883 transitions. [2021-11-06 14:50:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 14:50:03,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:03,967 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:03,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:50:03,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash -815232842, now seen corresponding path program 1 times [2021-11-06 14:50:03,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:03,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637635817] [2021-11-06 14:50:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:03,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:50:04,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:04,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637635817] [2021-11-06 14:50:04,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637635817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:04,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:04,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:50:04,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427094937] [2021-11-06 14:50:04,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:04,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:04,187 INFO L87 Difference]: Start difference. First operand 5214 states and 6883 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:04,432 INFO L93 Difference]: Finished difference Result 8842 states and 11802 transitions. [2021-11-06 14:50:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:04,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 14:50:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:04,458 INFO L225 Difference]: With dead ends: 8842 [2021-11-06 14:50:04,458 INFO L226 Difference]: Without dead ends: 8812 [2021-11-06 14:50:04,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8812 states. [2021-11-06 14:50:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8812 to 8464. [2021-11-06 14:50:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8447 states have (on average 1.3404759086066058) internal successors, (11323), 8463 states have internal predecessors, (11323), 0 states have call successors, (0), 0 states 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 14:50:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 11323 transitions. [2021-11-06 14:50:04,653 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 11323 transitions. Word has length 97 [2021-11-06 14:50:04,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:04,655 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 11323 transitions. [2021-11-06 14:50:04,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 11323 transitions. [2021-11-06 14:50:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 14:50:04,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:04,664 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:04,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:50:04,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1860926297, now seen corresponding path program 1 times [2021-11-06 14:50:04,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:04,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170547643] [2021-11-06 14:50:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:04,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:50:04,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:04,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170547643] [2021-11-06 14:50:04,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170547643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:04,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945241016] [2021-11-06 14:50:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:04,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:04,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:04,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:50:04,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:50:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:05,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 14:50:05,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:50:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:50:06,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945241016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:06,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:50:06,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:50:06,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099811471] [2021-11-06 14:50:06,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:06,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:50:06,026 INFO L87 Difference]: Start difference. First operand 8464 states and 11323 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:06,446 INFO L93 Difference]: Finished difference Result 20115 states and 27010 transitions. [2021-11-06 14:50:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-06 14:50:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:06,473 INFO L225 Difference]: With dead ends: 20115 [2021-11-06 14:50:06,474 INFO L226 Difference]: Without dead ends: 11741 [2021-11-06 14:50:06,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:50:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11741 states. [2021-11-06 14:50:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11741 to 11611. [2021-11-06 14:50:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11611 states, 11594 states have (on average 1.3429360013800242) internal successors, (15570), 11610 states have internal predecessors, (15570), 0 states have call successors, (0), 0 states 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 14:50:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11611 states to 11611 states and 15570 transitions. [2021-11-06 14:50:06,699 INFO L78 Accepts]: Start accepts. Automaton has 11611 states and 15570 transitions. Word has length 116 [2021-11-06 14:50:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:06,699 INFO L470 AbstractCegarLoop]: Abstraction has 11611 states and 15570 transitions. [2021-11-06 14:50:06,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 11611 states and 15570 transitions. [2021-11-06 14:50:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 14:50:06,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:06,707 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:06,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 14:50:06,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:06,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash -906629770, now seen corresponding path program 1 times [2021-11-06 14:50:06,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:06,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731651036] [2021-11-06 14:50:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:06,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:50:07,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:07,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731651036] [2021-11-06 14:50:07,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731651036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:07,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861557355] [2021-11-06 14:50:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:07,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:07,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:50:07,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:50:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:07,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 14:50:07,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:50:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:50:08,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861557355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:08,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:50:08,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-06 14:50:08,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768830509] [2021-11-06 14:50:08,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:50:08,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:50:08,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:50:08,227 INFO L87 Difference]: Start difference. First operand 11611 states and 15570 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 14:50:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:13,886 INFO L93 Difference]: Finished difference Result 34588 states and 46729 transitions. [2021-11-06 14:50:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:50:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 135 [2021-11-06 14:50:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:13,935 INFO L225 Difference]: With dead ends: 34588 [2021-11-06 14:50:13,935 INFO L226 Difference]: Without dead ends: 23067 [2021-11-06 14:50:13,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-06 14:50:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23067 states. [2021-11-06 14:50:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23067 to 11644. [2021-11-06 14:50:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11644 states, 11627 states have (on average 1.3419626730885008) internal successors, (15603), 11643 states have internal predecessors, (15603), 0 states have call successors, (0), 0 states 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 14:50:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11644 states to 11644 states and 15603 transitions. [2021-11-06 14:50:14,248 INFO L78 Accepts]: Start accepts. Automaton has 11644 states and 15603 transitions. Word has length 135 [2021-11-06 14:50:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:14,249 INFO L470 AbstractCegarLoop]: Abstraction has 11644 states and 15603 transitions. [2021-11-06 14:50:14,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 14:50:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11644 states and 15603 transitions. [2021-11-06 14:50:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 14:50:14,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:14,258 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:14,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:50:14,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-06 14:50:14,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1586688140, now seen corresponding path program 1 times [2021-11-06 14:50:14,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:14,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653751232] [2021-11-06 14:50:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:14,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:50:14,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:14,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653751232] [2021-11-06 14:50:14,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653751232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:14,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:14,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:50:14,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610953237] [2021-11-06 14:50:14,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:14,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:14,746 INFO L87 Difference]: Start difference. First operand 11644 states and 15603 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 14:50:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:14,910 INFO L93 Difference]: Finished difference Result 23208 states and 31118 transitions. [2021-11-06 14:50:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 135 [2021-11-06 14:50:14,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:14,930 INFO L225 Difference]: With dead ends: 23208 [2021-11-06 14:50:14,930 INFO L226 Difference]: Without dead ends: 11654 [2021-11-06 14:50:14,944 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 14:50:14,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11654 states. [2021-11-06 14:50:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11654 to 11646. [2021-11-06 14:50:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11646 states, 11629 states have (on average 1.3419038610370626) internal successors, (15605), 11645 states have internal predecessors, (15605), 0 states have call successors, (0), 0 states 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 14:50:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11646 states to 11646 states and 15605 transitions. [2021-11-06 14:50:15,251 INFO L78 Accepts]: Start accepts. Automaton has 11646 states and 15605 transitions. Word has length 135 [2021-11-06 14:50:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:15,251 INFO L470 AbstractCegarLoop]: Abstraction has 11646 states and 15605 transitions. [2021-11-06 14:50:15,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 14:50:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 11646 states and 15605 transitions. [2021-11-06 14:50:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 14:50:15,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:15,259 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:15,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:50:15,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:50:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1736258482, now seen corresponding path program 1 times [2021-11-06 14:50:15,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:15,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901146843] [2021-11-06 14:50:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:15,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:50:15,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:15,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901146843] [2021-11-06 14:50:15,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901146843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:15,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166157131] [2021-11-06 14:50:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:15,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:15,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:15,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:50:15,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:51:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:15,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 14:51:15,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:51:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-06 14:51:16,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166157131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:16,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:51:16,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:51:16,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204099448] [2021-11-06 14:51:16,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:16,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:16,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:51:16,173 INFO L87 Difference]: Start difference. First operand 11646 states and 15605 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 14:51:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:16,430 INFO L93 Difference]: Finished difference Result 23209 states and 31119 transitions. [2021-11-06 14:51:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 139 [2021-11-06 14:51:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:16,460 INFO L225 Difference]: With dead ends: 23209 [2021-11-06 14:51:16,460 INFO L226 Difference]: Without dead ends: 11648 [2021-11-06 14:51:16,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:51:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11648 states. [2021-11-06 14:51:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11648 to 11648. [2021-11-06 14:51:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11648 states, 11631 states have (on average 1.3418450692115897) internal successors, (15607), 11647 states have internal predecessors, (15607), 0 states have call successors, (0), 0 states 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 14:51:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11648 states to 11648 states and 15607 transitions. [2021-11-06 14:51:16,710 INFO L78 Accepts]: Start accepts. Automaton has 11648 states and 15607 transitions. Word has length 139 [2021-11-06 14:51:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:16,711 INFO L470 AbstractCegarLoop]: Abstraction has 11648 states and 15607 transitions. [2021-11-06 14:51:16,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 14:51:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11648 states and 15607 transitions. [2021-11-06 14:51:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-06 14:51:16,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:16,719 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:51:16,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:51:16,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:16,931 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:51:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash 880659058, now seen corresponding path program 1 times [2021-11-06 14:51:16,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:16,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548862856] [2021-11-06 14:51:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:16,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 14:51:17,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:17,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548862856] [2021-11-06 14:51:17,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548862856] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:17,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564032233] [2021-11-06 14:51:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:17,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:17,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:51:17,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:51:17,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 14:51:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:55,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 14:51:55,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:51:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:51:55,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564032233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:55,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:51:55,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-06 14:51:55,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402806841] [2021-11-06 14:51:55,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:51:55,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:55,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:51:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:51:55,760 INFO L87 Difference]: Start difference. First operand 11648 states and 15607 transitions. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 14:51:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:56,798 INFO L93 Difference]: Finished difference Result 46378 states and 62200 transitions. [2021-11-06 14:51:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 14:51:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 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 141 [2021-11-06 14:51:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:56,869 INFO L225 Difference]: With dead ends: 46378 [2021-11-06 14:51:56,869 INFO L226 Difference]: Without dead ends: 34821 [2021-11-06 14:51:56,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:51:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34821 states. [2021-11-06 14:51:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34821 to 11657. [2021-11-06 14:51:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11657 states, 11640 states have (on average 1.3417525773195875) internal successors, (15618), 11656 states have internal predecessors, (15618), 0 states have call successors, (0), 0 states 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 14:51:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11657 states to 11657 states and 15618 transitions. [2021-11-06 14:51:57,390 INFO L78 Accepts]: Start accepts. Automaton has 11657 states and 15618 transitions. Word has length 141 [2021-11-06 14:51:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:57,391 INFO L470 AbstractCegarLoop]: Abstraction has 11657 states and 15618 transitions. [2021-11-06 14:51:57,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 14:51:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 11657 states and 15618 transitions. [2021-11-06 14:51:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 14:51:57,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:57,399 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:51:57,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 14:51:57,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:57,619 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:51:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2076733503, now seen corresponding path program 1 times [2021-11-06 14:51:57,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:57,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183050091] [2021-11-06 14:51:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:57,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:51:57,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:57,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183050091] [2021-11-06 14:51:57,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183050091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:57,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:57,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:51:57,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595447289] [2021-11-06 14:51:57,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:51:57,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:51:57,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:51:57,922 INFO L87 Difference]: Start difference. First operand 11657 states and 15618 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 14:52:04,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:04,834 INFO L93 Difference]: Finished difference Result 53146 states and 71888 transitions. [2021-11-06 14:52:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 14:52:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 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 143 [2021-11-06 14:52:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:04,908 INFO L225 Difference]: With dead ends: 53146 [2021-11-06 14:52:04,908 INFO L226 Difference]: Without dead ends: 41582 [2021-11-06 14:52:04,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-06 14:52:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41582 states. [2021-11-06 14:52:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41582 to 11681. [2021-11-06 14:52:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11681 states, 11664 states have (on average 1.3410493827160495) internal successors, (15642), 11680 states have internal predecessors, (15642), 0 states have call successors, (0), 0 states 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 14:52:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 15642 transitions. [2021-11-06 14:52:05,626 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 15642 transitions. Word has length 143 [2021-11-06 14:52:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:05,626 INFO L470 AbstractCegarLoop]: Abstraction has 11681 states and 15642 transitions. [2021-11-06 14:52:05,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 14:52:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 15642 transitions. [2021-11-06 14:52:05,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 14:52:05,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:05,635 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:05,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:52:05,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:52:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash -767094256, now seen corresponding path program 1 times [2021-11-06 14:52:05,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:05,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950687582] [2021-11-06 14:52:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:05,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:52:05,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:05,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950687582] [2021-11-06 14:52:05,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950687582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:05,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:05,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:05,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048978264] [2021-11-06 14:52:05,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:05,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:05,764 INFO L87 Difference]: Start difference. First operand 11681 states and 15642 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 14:52:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:07,459 INFO L93 Difference]: Finished difference Result 42877 states and 58035 transitions. [2021-11-06 14:52:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:52:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 146 [2021-11-06 14:52:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:07,513 INFO L225 Difference]: With dead ends: 42877 [2021-11-06 14:52:07,513 INFO L226 Difference]: Without dead ends: 31289 [2021-11-06 14:52:07,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:52:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31289 states. [2021-11-06 14:52:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31289 to 11717. [2021-11-06 14:52:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11717 states, 11700 states have (on average 1.34) internal successors, (15678), 11716 states have internal predecessors, (15678), 0 states have call successors, (0), 0 states 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 14:52:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11717 states to 11717 states and 15678 transitions. [2021-11-06 14:52:08,228 INFO L78 Accepts]: Start accepts. Automaton has 11717 states and 15678 transitions. Word has length 146 [2021-11-06 14:52:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:08,228 INFO L470 AbstractCegarLoop]: Abstraction has 11717 states and 15678 transitions. [2021-11-06 14:52:08,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 14:52:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 11717 states and 15678 transitions. [2021-11-06 14:52:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 14:52:08,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:08,235 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:08,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:52:08,235 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:52:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash 694489739, now seen corresponding path program 1 times [2021-11-06 14:52:08,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:08,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330506209] [2021-11-06 14:52:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:08,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:52:08,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:08,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330506209] [2021-11-06 14:52:08,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330506209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:08,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:08,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:08,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003681636] [2021-11-06 14:52:08,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:08,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:08,480 INFO L87 Difference]: Start difference. First operand 11717 states and 15678 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:10,995 INFO L93 Difference]: Finished difference Result 55723 states and 75074 transitions. [2021-11-06 14:52:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:52:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-06 14:52:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:11,063 INFO L225 Difference]: With dead ends: 55723 [2021-11-06 14:52:11,064 INFO L226 Difference]: Without dead ends: 44099 [2021-11-06 14:52:11,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:52:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44099 states. [2021-11-06 14:52:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44099 to 11735. [2021-11-06 14:52:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11735 states, 11718 states have (on average 1.3394777265745008) internal successors, (15696), 11734 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states 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 14:52:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11735 states to 11735 states and 15696 transitions. [2021-11-06 14:52:11,849 INFO L78 Accepts]: Start accepts. Automaton has 11735 states and 15696 transitions. Word has length 152 [2021-11-06 14:52:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:11,849 INFO L470 AbstractCegarLoop]: Abstraction has 11735 states and 15696 transitions. [2021-11-06 14:52:11,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11735 states and 15696 transitions. [2021-11-06 14:52:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 14:52:11,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:11,855 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:11,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:52:11,856 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:52:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1397715539, now seen corresponding path program 1 times [2021-11-06 14:52:11,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:11,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817074782] [2021-11-06 14:52:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:11,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:52:12,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:12,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817074782] [2021-11-06 14:52:12,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817074782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:12,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:12,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 14:52:12,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089594581] [2021-11-06 14:52:12,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:52:12,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:52:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:52:12,159 INFO L87 Difference]: Start difference. First operand 11735 states and 15696 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 14:52:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:16,298 INFO L93 Difference]: Finished difference Result 77423 states and 104368 transitions. [2021-11-06 14:52:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 14:52:16,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 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 158 [2021-11-06 14:52:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:16,401 INFO L225 Difference]: With dead ends: 77423 [2021-11-06 14:52:16,401 INFO L226 Difference]: Without dead ends: 65781 [2021-11-06 14:52:16,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:52:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65781 states. [2021-11-06 14:52:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65781 to 11745. [2021-11-06 14:52:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11745 states, 11728 states have (on average 1.33918826739427) internal successors, (15706), 11744 states have internal predecessors, (15706), 0 states have call successors, (0), 0 states 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 14:52:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11745 states to 11745 states and 15706 transitions. [2021-11-06 14:52:17,506 INFO L78 Accepts]: Start accepts. Automaton has 11745 states and 15706 transitions. Word has length 158 [2021-11-06 14:52:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:17,506 INFO L470 AbstractCegarLoop]: Abstraction has 11745 states and 15706 transitions. [2021-11-06 14:52:17,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 14:52:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11745 states and 15706 transitions. [2021-11-06 14:52:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-06 14:52:17,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:17,512 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:17,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 14:52:17,513 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:52:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash 624968627, now seen corresponding path program 1 times [2021-11-06 14:52:17,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:17,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811363624] [2021-11-06 14:52:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:17,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:52:17,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:17,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811363624] [2021-11-06 14:52:17,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811363624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:17,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:17,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 14:52:17,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986172338] [2021-11-06 14:52:17,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 14:52:17,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 14:52:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:52:17,819 INFO L87 Difference]: Start difference. First operand 11745 states and 15706 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:52:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:26,121 INFO L93 Difference]: Finished difference Result 60403 states and 81583 transitions. [2021-11-06 14:52:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 14:52:26,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 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 160 [2021-11-06 14:52:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:26,198 INFO L225 Difference]: With dead ends: 60403 [2021-11-06 14:52:26,198 INFO L226 Difference]: Without dead ends: 48751 [2021-11-06 14:52:26,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2021-11-06 14:52:26,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48751 states. [2021-11-06 14:52:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48751 to 11745. [2021-11-06 14:52:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11745 states, 11728 states have (on average 1.33918826739427) internal successors, (15706), 11744 states have internal predecessors, (15706), 0 states have call successors, (0), 0 states 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 14:52:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11745 states to 11745 states and 15706 transitions. [2021-11-06 14:52:27,383 INFO L78 Accepts]: Start accepts. Automaton has 11745 states and 15706 transitions. Word has length 160 [2021-11-06 14:52:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:27,384 INFO L470 AbstractCegarLoop]: Abstraction has 11745 states and 15706 transitions. [2021-11-06 14:52:27,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:52:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 11745 states and 15706 transitions. [2021-11-06 14:52:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-06 14:52:27,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:27,390 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:27,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 14:52:27,390 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:52:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -433234149, now seen corresponding path program 1 times [2021-11-06 14:52:27,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:27,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764744504] [2021-11-06 14:52:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:27,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:52:27,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:27,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764744504] [2021-11-06 14:52:27,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764744504] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:52:27,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031970712] [2021-11-06 14:52:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:27,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:52:27,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:52:27,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:52:27,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 14:52:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:28,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 14:52:28,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:52:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:52:28,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031970712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:28,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:52:28,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 14:52:28,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370311913] [2021-11-06 14:52:28,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:28,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:52:28,827 INFO L87 Difference]: Start difference. First operand 11745 states and 15706 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 14:52:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:31,050 INFO L93 Difference]: Finished difference Result 32795 states and 43766 transitions. [2021-11-06 14:52:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:52:31,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 164 [2021-11-06 14:52:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:31,080 INFO L225 Difference]: With dead ends: 32795 [2021-11-06 14:52:31,080 INFO L226 Difference]: Without dead ends: 21143 [2021-11-06 14:52:31,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:52:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21143 states. [2021-11-06 14:52:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21143 to 11749. [2021-11-06 14:52:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11749 states, 11732 states have (on average 1.339072621888851) internal successors, (15710), 11748 states have internal predecessors, (15710), 0 states have call successors, (0), 0 states 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 14:52:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11749 states to 11749 states and 15710 transitions. [2021-11-06 14:52:32,159 INFO L78 Accepts]: Start accepts. Automaton has 11749 states and 15710 transitions. Word has length 164 [2021-11-06 14:52:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:32,159 INFO L470 AbstractCegarLoop]: Abstraction has 11749 states and 15710 transitions. [2021-11-06 14:52:32,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 14:52:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 11749 states and 15710 transitions. [2021-11-06 14:52:32,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 14:52:32,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:32,165 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:32,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 14:52:32,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 14:52:32,367 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:52:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash -765148299, now seen corresponding path program 1 times [2021-11-06 14:52:32,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:32,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305024319] [2021-11-06 14:52:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:32,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:52:32,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:32,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305024319] [2021-11-06 14:52:32,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305024319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:52:32,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306097613] [2021-11-06 14:52:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:32,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:52:32,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:52:32,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:52:32,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 14:53:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:12,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 14:53:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:53:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:53:13,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306097613] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:53:13,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:53:13,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:53:13,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881462112] [2021-11-06 14:53:13,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:53:13,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:53:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:53:13,246 INFO L87 Difference]: Start difference. First operand 11749 states and 15710 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 14:53:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:14,217 INFO L93 Difference]: Finished difference Result 23433 states and 31353 transitions. [2021-11-06 14:53:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:53:14,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 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 167 [2021-11-06 14:53:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:14,233 INFO L225 Difference]: With dead ends: 23433 [2021-11-06 14:53:14,233 INFO L226 Difference]: Without dead ends: 11777 [2021-11-06 14:53:14,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:53:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2021-11-06 14:53:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 11773. [2021-11-06 14:53:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11756 states have (on average 1.3387206532834297) internal successors, (15738), 11772 states have internal predecessors, (15738), 0 states have call successors, (0), 0 states 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 14:53:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 15738 transitions. [2021-11-06 14:53:15,295 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 15738 transitions. Word has length 167 [2021-11-06 14:53:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:15,295 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 15738 transitions. [2021-11-06 14:53:15,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 14:53:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 15738 transitions. [2021-11-06 14:53:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 14:53:15,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:15,301 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:53:15,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 14:53:15,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-06 14:53:15,503 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:53:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1586403279, now seen corresponding path program 2 times [2021-11-06 14:53:15,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:15,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288264576] [2021-11-06 14:53:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:15,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 14:53:15,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:15,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288264576] [2021-11-06 14:53:15,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288264576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:53:15,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908436111] [2021-11-06 14:53:15,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:53:15,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:53:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:53:15,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:53:15,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 14:57:42,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 14:57:42,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:57:42,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 14:57:42,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:57:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 14:57:43,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908436111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:57:43,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:57:43,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:57:43,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155638457] [2021-11-06 14:57:43,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:57:43,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:57:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:57:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:57:43,035 INFO L87 Difference]: Start difference. First operand 11773 states and 15738 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 14:57:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:57:44,129 INFO L93 Difference]: Finished difference Result 23462 states and 31384 transitions. [2021-11-06 14:57:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:57:44,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-06 14:57:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:57:44,146 INFO L225 Difference]: With dead ends: 23462 [2021-11-06 14:57:44,147 INFO L226 Difference]: Without dead ends: 11775 [2021-11-06 14:57:44,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:57:44,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11775 states. [2021-11-06 14:57:45,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11775 to 11775. [2021-11-06 14:57:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11775 states, 11758 states have (on average 1.3386630379316211) internal successors, (15740), 11774 states have internal predecessors, (15740), 0 states have call successors, (0), 0 states 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 14:57:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11775 states to 11775 states and 15740 transitions. [2021-11-06 14:57:45,236 INFO L78 Accepts]: Start accepts. Automaton has 11775 states and 15740 transitions. Word has length 171 [2021-11-06 14:57:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:57:45,236 INFO L470 AbstractCegarLoop]: Abstraction has 11775 states and 15740 transitions. [2021-11-06 14:57:45,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 14:57:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11775 states and 15740 transitions. [2021-11-06 14:57:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-06 14:57:45,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:57:45,243 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:57:45,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 14:57:45,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:57:45,444 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 14:57:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:57:45,444 INFO L85 PathProgramCache]: Analyzing trace with hash -995966485, now seen corresponding path program 3 times [2021-11-06 14:57:45,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:57:45,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017216417] [2021-11-06 14:57:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:57:45,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:57:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:57:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-06 14:57:45,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:57:45,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017216417] [2021-11-06 14:57:45,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017216417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:57:45,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347552746] [2021-11-06 14:57:45,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 14:57:45,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:57:45,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:57:45,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:57:45,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 15:00:45,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 15:00:45,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:00:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 15:00:45,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:00:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-06 15:00:45,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347552746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:00:45,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:00:45,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-11-06 15:00:45,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323720008] [2021-11-06 15:00:45,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 15:00:45,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:00:45,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 15:00:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:00:45,996 INFO L87 Difference]: Start difference. First operand 11775 states and 15740 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 15:00:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:00:49,740 INFO L93 Difference]: Finished difference Result 46826 states and 62655 transitions. [2021-11-06 15:00:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:00:49,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 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 173 [2021-11-06 15:00:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:00:49,814 INFO L225 Difference]: With dead ends: 46826 [2021-11-06 15:00:49,814 INFO L226 Difference]: Without dead ends: 35138 [2021-11-06 15:00:49,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:00:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35138 states. [2021-11-06 15:00:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35138 to 11778. [2021-11-06 15:00:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11778 states, 11761 states have (on average 1.3385766516452682) internal successors, (15743), 11777 states have internal predecessors, (15743), 0 states have call successors, (0), 0 states 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 15:00:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 15743 transitions. [2021-11-06 15:00:51,240 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 15743 transitions. Word has length 173 [2021-11-06 15:00:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:00:51,240 INFO L470 AbstractCegarLoop]: Abstraction has 11778 states and 15743 transitions. [2021-11-06 15:00:51,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 15:00:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 15743 transitions. [2021-11-06 15:00:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-06 15:00:51,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:00:51,248 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:00:51,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 15:00:51,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 15:00:51,449 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:00:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:00:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash -486174062, now seen corresponding path program 4 times [2021-11-06 15:00:51,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:00:51,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26220485] [2021-11-06 15:00:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:00:51,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:00:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:00:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-06 15:00:51,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:00:51,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26220485] [2021-11-06 15:00:51,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26220485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:00:51,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349103416] [2021-11-06 15:00:51,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-06 15:00:51,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:00:51,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:00:51,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:00:51,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 15:02:01,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-06 15:02:01,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:02:01,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 3121 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-06 15:02:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:02:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-06 15:02:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349103416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:02:02,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:02:02,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-06 15:02:02,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121807280] [2021-11-06 15:02:02,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:02:02,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:02:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:02:02,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:02:02,053 INFO L87 Difference]: Start difference. First operand 11778 states and 15743 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 15:02:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:02:03,645 INFO L93 Difference]: Finished difference Result 23470 states and 31392 transitions. [2021-11-06 15:02:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:02:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 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 176 [2021-11-06 15:02:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:02:03,664 INFO L225 Difference]: With dead ends: 23470 [2021-11-06 15:02:03,665 INFO L226 Difference]: Without dead ends: 11780 [2021-11-06 15:02:03,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:02:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11780 states. [2021-11-06 15:02:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11780 to 11780. [2021-11-06 15:02:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11780 states, 11763 states have (on average 1.3385190852673639) internal successors, (15745), 11779 states have internal predecessors, (15745), 0 states have call successors, (0), 0 states 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 15:02:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11780 states to 11780 states and 15745 transitions. [2021-11-06 15:02:04,712 INFO L78 Accepts]: Start accepts. Automaton has 11780 states and 15745 transitions. Word has length 176 [2021-11-06 15:02:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:02:04,712 INFO L470 AbstractCegarLoop]: Abstraction has 11780 states and 15745 transitions. [2021-11-06 15:02:04,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 15:02:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 11780 states and 15745 transitions. [2021-11-06 15:02:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 15:02:04,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:02:04,719 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:02:04,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-06 15:02:04,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:02:04,919 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:02:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:02:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash 63404790, now seen corresponding path program 5 times [2021-11-06 15:02:04,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:02:04,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159503133] [2021-11-06 15:02:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:02:04,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:02:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:02:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-06 15:02:05,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:02:05,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159503133] [2021-11-06 15:02:05,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159503133] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:02:05,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614094703] [2021-11-06 15:02:05,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-06 15:02:05,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:02:05,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:02:05,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:02:05,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 15:02:23,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-06 15:02:23,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:02:23,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 15:02:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:02:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-06 15:02:23,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614094703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:02:23,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:02:23,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-06 15:02:23,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988662920] [2021-11-06 15:02:23,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:02:23,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:02:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:02:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:02:23,535 INFO L87 Difference]: Start difference. First operand 11780 states and 15745 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 15:02:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:02:25,141 INFO L93 Difference]: Finished difference Result 26564 states and 35499 transitions. [2021-11-06 15:02:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:02:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 178 [2021-11-06 15:02:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:02:25,166 INFO L225 Difference]: With dead ends: 26564 [2021-11-06 15:02:25,167 INFO L226 Difference]: Without dead ends: 14884 [2021-11-06 15:02:25,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:02:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14884 states. [2021-11-06 15:02:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14884 to 11780. [2021-11-06 15:02:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11780 states, 11763 states have (on average 1.3385190852673639) internal successors, (15745), 11779 states have internal predecessors, (15745), 0 states have call successors, (0), 0 states 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 15:02:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11780 states to 11780 states and 15745 transitions. [2021-11-06 15:02:26,273 INFO L78 Accepts]: Start accepts. Automaton has 11780 states and 15745 transitions. Word has length 178 [2021-11-06 15:02:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:02:26,274 INFO L470 AbstractCegarLoop]: Abstraction has 11780 states and 15745 transitions. [2021-11-06 15:02:26,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 15:02:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 11780 states and 15745 transitions. [2021-11-06 15:02:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 15:02:26,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:02:26,280 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:02:26,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 15:02:26,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:02:26,481 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:02:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:02:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash 743006459, now seen corresponding path program 1 times [2021-11-06 15:02:26,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:02:26,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671112032] [2021-11-06 15:02:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:02:26,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:02:26,551 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 15:02:26,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622354238] [2021-11-06 15:02:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:02:26,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:02:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:02:26,553 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:02:26,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 15:02:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:02:27,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:02:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:02:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 15:02:28,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:02:28,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671112032] [2021-11-06 15:02:28,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 15:02:28,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622354238] [2021-11-06 15:02:28,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622354238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:02:28,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:02:28,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:02:28,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710606088] [2021-11-06 15:02:28,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:02:28,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:02:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:02:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:02:28,191 INFO L87 Difference]: Start difference. First operand 11780 states and 15745 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 15:02:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:02:29,868 INFO L93 Difference]: Finished difference Result 27847 states and 37411 transitions. [2021-11-06 15:02:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:02:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 180 [2021-11-06 15:02:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:02:29,901 INFO L225 Difference]: With dead ends: 27847 [2021-11-06 15:02:29,901 INFO L226 Difference]: Without dead ends: 16167 [2021-11-06 15:02:29,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 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 15:02:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16167 states. [2021-11-06 15:02:31,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16167 to 11960. [2021-11-06 15:02:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11960 states, 11943 states have (on average 1.3334170643891818) internal successors, (15925), 11959 states have internal predecessors, (15925), 0 states have call successors, (0), 0 states 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 15:02:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11960 states to 11960 states and 15925 transitions. [2021-11-06 15:02:31,205 INFO L78 Accepts]: Start accepts. Automaton has 11960 states and 15925 transitions. Word has length 180 [2021-11-06 15:02:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:02:31,205 INFO L470 AbstractCegarLoop]: Abstraction has 11960 states and 15925 transitions. [2021-11-06 15:02:31,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 15:02:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11960 states and 15925 transitions. [2021-11-06 15:02:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 15:02:31,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:02:31,212 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:02:31,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 15:02:31,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-06 15:02:31,413 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:02:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:02:31,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1448047613, now seen corresponding path program 1 times [2021-11-06 15:02:31,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:02:31,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480974111] [2021-11-06 15:02:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:02:31,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:02:31,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 15:02:31,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728370600] [2021-11-06 15:02:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:02:31,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:02:31,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:02:31,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:02:31,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 15:02:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:02:32,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-06 15:02:32,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:02:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 15:02:33,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:02:33,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480974111] [2021-11-06 15:02:33,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 15:02:33,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728370600] [2021-11-06 15:02:33,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728370600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:02:33,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:02:33,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-06 15:02:33,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201923674] [2021-11-06 15:02:33,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 15:02:33,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:02:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 15:02:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:02:33,189 INFO L87 Difference]: Start difference. First operand 11960 states and 15925 transitions. Second operand has 10 states, 10 states have (on average 17.4) internal successors, (174), 10 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 15:02:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:02:42,659 INFO L93 Difference]: Finished difference Result 83130 states and 110818 transitions. [2021-11-06 15:02:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 15:02:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 10 states have internal predecessors, (174), 0 states have call successors, (0), 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 180 [2021-11-06 15:02:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:02:42,805 INFO L225 Difference]: With dead ends: 83130 [2021-11-06 15:02:42,805 INFO L226 Difference]: Without dead ends: 71269 [2021-11-06 15:02:42,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:02:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71269 states. [2021-11-06 15:02:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71269 to 11961. [2021-11-06 15:02:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11961 states, 11944 states have (on average 1.3333891493636973) internal successors, (15926), 11960 states have internal predecessors, (15926), 0 states have call successors, (0), 0 states 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 15:02:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11961 states to 11961 states and 15926 transitions. [2021-11-06 15:02:44,626 INFO L78 Accepts]: Start accepts. Automaton has 11961 states and 15926 transitions. Word has length 180 [2021-11-06 15:02:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:02:44,626 INFO L470 AbstractCegarLoop]: Abstraction has 11961 states and 15926 transitions. [2021-11-06 15:02:44,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.4) internal successors, (174), 10 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 15:02:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11961 states and 15926 transitions. [2021-11-06 15:02:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-06 15:02:44,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:02:44,633 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:02:44,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 15:02:44,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-06 15:02:44,834 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 15:02:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:02:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash 58133592, now seen corresponding path program 2 times [2021-11-06 15:02:44,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:02:44,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578787675] [2021-11-06 15:02:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:02:44,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:02:44,947 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 15:02:44,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505999492] [2021-11-06 15:02:44,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:02:44,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:02:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:02:44,948 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:02:44,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 15:03:39,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:03:39,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:03:39,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 15:03:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:03:39,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 15:03:39,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 15:03:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 15:03:40,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:03:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578787675] [2021-11-06 15:03:40,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 15:03:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505999492] [2021-11-06 15:03:40,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505999492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:03:40,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:03:40,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:03:40,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450773921] [2021-11-06 15:03:40,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:03:40,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:03:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:03:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:03:40,211 INFO L87 Difference]: Start difference. First operand 11961 states and 15926 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15