./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 c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-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-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:35:37,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:35:37,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:35:37,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:35:37,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:35:37,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:35:37,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:35:37,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:35:37,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:35:37,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:35:37,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:35:37,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:35:37,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:35:37,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:35:37,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:35:37,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:35:37,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:35:37,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:35:37,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:35:37,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:35:37,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:35:37,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:35:37,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:35:37,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:35:37,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:35:37,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:35:37,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:35:37,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:35:37,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:35:37,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:35:37,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:35:37,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:35:37,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:35:37,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:35:37,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:35:37,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:35:37,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:35:37,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:35:37,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:35:37,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:35:37,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:35:37,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:35:37,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:35:37,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:35:37,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:35:37,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:35:37,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:35:37,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:35:37,204 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:35:37,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:35:37,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:35:37,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:35:37,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:35:37,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:35:37,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:35:37,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:35:37,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:35:37,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:35:37,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:35:37,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:35:37,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:35:37,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:35:37,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:35:37,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:35:37,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2021-11-04 04:35:37,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:35:37,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:35:37,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:35:37,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:35:37,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:35:37,417 INFO L432 ainManager$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 [2021-11-04 04:35:37,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df40de978/3e0936101c0a4e94b6c2f6fe2cc86815/FLAG7cc16bf11 [2021-11-04 04:35:38,141 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:35:38,142 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 [2021-11-04 04:35:38,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df40de978/3e0936101c0a4e94b6c2f6fe2cc86815/FLAG7cc16bf11 [2021-11-04 04:35:38,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df40de978/3e0936101c0a4e94b6c2f6fe2cc86815 [2021-11-04 04:35:38,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:35:38,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:35:38,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:35:38,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:35:38,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:35:38,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:35:38" (1/1) ... [2021-11-04 04:35:38,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786905d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:38, skipping insertion in model container [2021-11-04 04:35:38,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:35:38" (1/1) ... [2021-11-04 04:35:38,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:35:38,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:35:39,022 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-11-04 04:35:39,030 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] [2021-11-04 04:35:39,357 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] [2021-11-04 04:35:40,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:35:40,055 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:35:40,168 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2021-11-04 04:35:40,169 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] [2021-11-04 04:35:40,181 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] [2021-11-04 04:35:40,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:35:40,465 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:35:40,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40 WrapperNode [2021-11-04 04:35:40,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:35:40,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:35:40,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:35:40,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:35:40,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:40,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:40,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:35:40,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:35:40,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:35:40,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:35:40,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:40,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:40,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:40,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:41,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:41,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:41,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:41,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:35:41,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:35:41,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:35:41,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:35:41,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (1/1) ... [2021-11-04 04:35:41,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:35:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:35:41,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 04:35:41,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 04:35:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:35:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:35:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:35:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:35:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:35:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:35:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:35:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:35:41,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:35:46,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:35:46,740 INFO L299 CfgBuilder]: Removed 3092 assume(true) statements. [2021-11-04 04:35:46,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:35:46 BoogieIcfgContainer [2021-11-04 04:35:46,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:35:46,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:35:46,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:35:46,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:35:46,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:35:38" (1/3) ... [2021-11-04 04:35:46,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ec5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:35:46, skipping insertion in model container [2021-11-04 04:35:46,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:35:40" (2/3) ... [2021-11-04 04:35:46,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ec5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:35:46, skipping insertion in model container [2021-11-04 04:35:46,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:35:46" (3/3) ... [2021-11-04 04:35:46,751 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 [2021-11-04 04:35:46,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:35:46,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-04 04:35:46,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:35:46,805 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 04:35:46,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-04 04:35:46,849 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) [2021-11-04 04:35:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-04 04:35:46,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:35:46,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:35:46,870 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)] === [2021-11-04 04:35:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:35:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1458939173, now seen corresponding path program 1 times [2021-11-04 04:35:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:35:46,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588680637] [2021-11-04 04:35:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:35:46,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:35:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:35:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:35:47,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:35:47,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588680637] [2021-11-04 04:35:47,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588680637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:35:47,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:35:47,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:35:47,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753524610] [2021-11-04 04:35:47,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:35:47,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:35:47,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:35:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:35:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:35:47,396 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) [2021-11-04 04:35:49,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:35:54,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:00,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:02,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:04,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:36:05,873 INFO L93 Difference]: Finished difference Result 5407 states and 7289 transitions. [2021-11-04 04:36:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:36:05,878 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 [2021-11-04 04:36:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:36:05,901 INFO L225 Difference]: With dead ends: 5407 [2021-11-04 04:36:05,902 INFO L226 Difference]: Without dead ends: 2663 [2021-11-04 04:36:05,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:05,916 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 7028 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16734.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 7035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7028 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18105.10ms IncrementalHoareTripleChecker+Time [2021-11-04 04:36:05,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 7035 Unknown, 0 Unchecked, 32.43ms Time], IncrementalHoareTripleChecker [2 Valid, 7028 Invalid, 5 Unknown, 0 Unchecked, 18105.10ms Time] [2021-11-04 04:36:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-11-04 04:36:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2021-11-04 04:36:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2646 states have (on average 1.3140589569160999) internal successors, (3477), 2662 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3477 transitions. [2021-11-04 04:36:06,052 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3477 transitions. Word has length 61 [2021-11-04 04:36:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:36:06,053 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3477 transitions. [2021-11-04 04:36:06,056 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) [2021-11-04 04:36:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3477 transitions. [2021-11-04 04:36:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 04:36:06,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:36:06,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:36:06,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:36:06,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-04 04:36:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:36:06,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1283166793, now seen corresponding path program 1 times [2021-11-04 04:36:06,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:36:06,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621836962] [2021-11-04 04:36:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:06,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:36:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:36:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:36:06,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:36:06,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621836962] [2021-11-04 04:36:06,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621836962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:36:06,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:36:06,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:36:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897806463] [2021-11-04 04:36:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:36:06,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:36:06,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:36:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:36:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:06,272 INFO L87 Difference]: Start difference. First operand 2663 states and 3477 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:08,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:13,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:19,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:21,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:24,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:26,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:36:27,792 INFO L93 Difference]: Finished difference Result 5236 states and 6853 transitions. [2021-11-04 04:36:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:36:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-04 04:36:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:36:27,802 INFO L225 Difference]: With dead ends: 5236 [2021-11-04 04:36:27,803 INFO L226 Difference]: Without dead ends: 2664 [2021-11-04 04:36:27,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:27,811 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 6937 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19675.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6937 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21245.46ms IncrementalHoareTripleChecker+Time [2021-11-04 04:36:27,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6943 Unknown, 0 Unchecked, 24.69ms Time], IncrementalHoareTripleChecker [0 Valid, 6937 Invalid, 6 Unknown, 0 Unchecked, 21245.46ms Time] [2021-11-04 04:36:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-11-04 04:36:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2664. [2021-11-04 04:36:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2647 states have (on average 1.3139403097846618) internal successors, (3478), 2663 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3478 transitions. [2021-11-04 04:36:27,872 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3478 transitions. Word has length 63 [2021-11-04 04:36:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:36:27,872 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3478 transitions. [2021-11-04 04:36:27,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3478 transitions. [2021-11-04 04:36:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-04 04:36:27,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:36:27,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:36:27,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:36:27,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-04 04:36:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:36:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1052502580, now seen corresponding path program 1 times [2021-11-04 04:36:27,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:36:27,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833395647] [2021-11-04 04:36:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:27,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:36:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:36:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:36:28,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:36:28,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833395647] [2021-11-04 04:36:28,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833395647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:36:28,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:36:28,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:36:28,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732113813] [2021-11-04 04:36:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:36:28,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:36:28,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:36:28,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:36:28,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:28,077 INFO L87 Difference]: Start difference. First operand 2664 states and 3478 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:30,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:36,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:40,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:43,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:45,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:51,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:36:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:36:52,233 INFO L93 Difference]: Finished difference Result 6937 states and 9078 transitions. [2021-11-04 04:36:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:36:52,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-04 04:36:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:36:52,249 INFO L225 Difference]: With dead ends: 6937 [2021-11-04 04:36:52,249 INFO L226 Difference]: Without dead ends: 4366 [2021-11-04 04:36:52,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:52,255 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2253 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 6895 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21438.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.69ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6895 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23817.24ms IncrementalHoareTripleChecker+Time [2021-11-04 04:36:52,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 0 Invalid, 6912 Unknown, 0 Unchecked, 22.69ms Time], IncrementalHoareTripleChecker [11 Valid, 6895 Invalid, 6 Unknown, 0 Unchecked, 23817.24ms Time] [2021-11-04 04:36:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-11-04 04:36:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4261. [2021-11-04 04:36:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 4244 states have (on average 1.3185673892554195) internal successors, (5596), 4260 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 5596 transitions. [2021-11-04 04:36:52,352 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 5596 transitions. Word has length 64 [2021-11-04 04:36:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:36:52,353 INFO L470 AbstractCegarLoop]: Abstraction has 4261 states and 5596 transitions. [2021-11-04 04:36:52,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 5596 transitions. [2021-11-04 04:36:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 04:36:52,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:36:52,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:36:52,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:36:52,357 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)] === [2021-11-04 04:36:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:36:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 999711383, now seen corresponding path program 1 times [2021-11-04 04:36:52,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:36:52,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151565754] [2021-11-04 04:36:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:52,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:36:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:36:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:36:52,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:36:52,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151565754] [2021-11-04 04:36:52,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151565754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:36:52,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:36:52,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:36:52,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173479467] [2021-11-04 04:36:52,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:36:52,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:36:52,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:36:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:36:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:52,526 INFO L87 Difference]: Start difference. First operand 4261 states and 5596 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:36:54,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:01,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:05,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:11,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:13,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:15,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:18,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:37:20,798 INFO L93 Difference]: Finished difference Result 9207 states and 12154 transitions. [2021-11-04 04:37:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:37:20,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-04 04:37:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:37:20,813 INFO L225 Difference]: With dead ends: 9207 [2021-11-04 04:37:20,813 INFO L226 Difference]: Without dead ends: 5039 [2021-11-04 04:37:20,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:20,820 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 946 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 7777 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25121.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7777 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27926.75ms IncrementalHoareTripleChecker+Time [2021-11-04 04:37:20,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 0 Invalid, 7785 Unknown, 0 Unchecked, 20.57ms Time], IncrementalHoareTripleChecker [1 Valid, 7777 Invalid, 7 Unknown, 0 Unchecked, 27926.75ms Time] [2021-11-04 04:37:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2021-11-04 04:37:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 5029. [2021-11-04 04:37:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 5012 states have (on average 1.3272146847565842) internal successors, (6652), 5028 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 6652 transitions. [2021-11-04 04:37:20,916 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 6652 transitions. Word has length 76 [2021-11-04 04:37:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:37:20,917 INFO L470 AbstractCegarLoop]: Abstraction has 5029 states and 6652 transitions. [2021-11-04 04:37:20,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 6652 transitions. [2021-11-04 04:37:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-04 04:37:20,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:37:20,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:37:20,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:37:20,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-04 04:37:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:37:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash 735789011, now seen corresponding path program 1 times [2021-11-04 04:37:20,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:37:20,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951570000] [2021-11-04 04:37:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:20,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:37:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:37:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:37:21,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:37:21,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951570000] [2021-11-04 04:37:21,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951570000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:37:21,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:37:21,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:37:21,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001321901] [2021-11-04 04:37:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:37:21,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:37:21,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:37:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:37:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:37:21,104 INFO L87 Difference]: Start difference. First operand 5029 states and 6652 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:23,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:33,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:40,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:42,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:44,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:47,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:37:50,118 INFO L93 Difference]: Finished difference Result 9973 states and 13207 transitions. [2021-11-04 04:37:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:37:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-04 04:37:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:37:50,134 INFO L225 Difference]: With dead ends: 9973 [2021-11-04 04:37:50,134 INFO L226 Difference]: Without dead ends: 5029 [2021-11-04 04:37:50,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:37:50,159 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 6929 mSDsCounter, 0 mSdLazyCounter, 10405 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25880.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10405 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28646.77ms IncrementalHoareTripleChecker+Time [2021-11-04 04:37:50,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 10412 Unknown, 0 Unchecked, 34.92ms Time], IncrementalHoareTripleChecker [1 Valid, 10405 Invalid, 6 Unknown, 0 Unchecked, 28646.77ms Time] [2021-11-04 04:37:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-11-04 04:37:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5029. [2021-11-04 04:37:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 5012 states have (on average 1.3256185155626496) internal successors, (6644), 5028 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 6644 transitions. [2021-11-04 04:37:50,268 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 6644 transitions. Word has length 93 [2021-11-04 04:37:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:37:50,270 INFO L470 AbstractCegarLoop]: Abstraction has 5029 states and 6644 transitions. [2021-11-04 04:37:50,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 6644 transitions. [2021-11-04 04:37:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-04 04:37:50,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:37:50,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:37:50,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:37:50,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-04 04:37:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:37:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash -373689891, now seen corresponding path program 1 times [2021-11-04 04:37:50,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:37:50,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245579585] [2021-11-04 04:37:50,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:50,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:37:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:37:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 04:37:50,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:37:50,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245579585] [2021-11-04 04:37:50,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245579585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:37:50,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:37:50,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 04:37:50,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747267772] [2021-11-04 04:37:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:37:50,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:37:50,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:37:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:37:50,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:50,464 INFO L87 Difference]: Start difference. First operand 5029 states and 6644 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:37:52,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:37:57,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:01,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:08,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:10,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:12,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:16,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:18,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:38:22,583 INFO L93 Difference]: Finished difference Result 8637 states and 11532 transitions. [2021-11-04 04:38:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:38:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-04 04:38:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:38:22,610 INFO L225 Difference]: With dead ends: 8637 [2021-11-04 04:38:22,611 INFO L226 Difference]: Without dead ends: 8607 [2021-11-04 04:38:22,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:38:22,616 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2587 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 6573 mSolverCounterSat, 43 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28217.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.62ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 6573 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31663.46ms IncrementalHoareTripleChecker+Time [2021-11-04 04:38:22,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2587 Valid, 0 Invalid, 6624 Unknown, 0 Unchecked, 25.62ms Time], IncrementalHoareTripleChecker [43 Valid, 6573 Invalid, 8 Unknown, 0 Unchecked, 31663.46ms Time] [2021-11-04 04:38:22,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8607 states. [2021-11-04 04:38:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8607 to 8259. [2021-11-04 04:38:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 8242 states have (on average 1.3416646445037612) internal successors, (11058), 8258 states have internal predecessors, (11058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:38:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 11058 transitions. [2021-11-04 04:38:22,843 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 11058 transitions. Word has length 100 [2021-11-04 04:38:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:38:22,844 INFO L470 AbstractCegarLoop]: Abstraction has 8259 states and 11058 transitions. [2021-11-04 04:38:22,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:38:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 11058 transitions. [2021-11-04 04:38:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-04 04:38:22,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:38:22,850 INFO L514 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, 1, 1, 1] [2021-11-04 04:38:22,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:38:22,851 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)] === [2021-11-04 04:38:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:38:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1819338030, now seen corresponding path program 1 times [2021-11-04 04:38:22,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:38:22,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870450509] [2021-11-04 04:38:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:22,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:38:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:38:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 04:38:23,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:38:23,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870450509] [2021-11-04 04:38:23,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870450509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:38:23,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947240038] [2021-11-04 04:38:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:23,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:38:23,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:38:23,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:38:23,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 04:38:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:38:23,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:38:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:38:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 04:38:24,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:38:24,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947240038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:38:24,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 04:38:24,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 04:38:24,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755622250] [2021-11-04 04:38:24,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:38:24,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:38:24,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:38:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:38:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:38:24,268 INFO L87 Difference]: Start difference. First operand 8259 states and 11058 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:38:26,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:32,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:36,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:38,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:40,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:42,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:45,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:38:50,209 INFO L93 Difference]: Finished difference Result 19699 states and 26471 transitions. [2021-11-04 04:38:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:38:50,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-04 04:38:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:38:50,253 INFO L225 Difference]: With dead ends: 19699 [2021-11-04 04:38:50,253 INFO L226 Difference]: Without dead ends: 11533 [2021-11-04 04:38:50,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.78ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:38:50,262 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2477 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 6689 mSolverCounterSat, 47 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23079.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.49ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6689 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25644.69ms IncrementalHoareTripleChecker+Time [2021-11-04 04:38:50,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2477 Valid, 0 Invalid, 6743 Unknown, 0 Unchecked, 10.49ms Time], IncrementalHoareTripleChecker [47 Valid, 6689 Invalid, 7 Unknown, 0 Unchecked, 25644.69ms Time] [2021-11-04 04:38:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-11-04 04:38:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11403. [2021-11-04 04:38:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11403 states, 11386 states have (on average 1.3436676620411032) internal successors, (15299), 11402 states have internal predecessors, (15299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:38:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11403 states to 11403 states and 15299 transitions. [2021-11-04 04:38:50,398 INFO L78 Accepts]: Start accepts. Automaton has 11403 states and 15299 transitions. Word has length 119 [2021-11-04 04:38:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:38:50,398 INFO L470 AbstractCegarLoop]: Abstraction has 11403 states and 15299 transitions. [2021-11-04 04:38:50,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:38:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 11403 states and 15299 transitions. [2021-11-04 04:38:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 04:38:50,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:38:50,409 INFO L514 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] [2021-11-04 04:38:50,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 04:38:50,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:38:50,623 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)] === [2021-11-04 04:38:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:38:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1542045347, now seen corresponding path program 1 times [2021-11-04 04:38:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:38:50,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051817439] [2021-11-04 04:38:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:50,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:38:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:38:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 04:38:50,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:38:50,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051817439] [2021-11-04 04:38:50,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051817439] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:38:50,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116740149] [2021-11-04 04:38:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:50,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:38:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:38:50,840 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) [2021-11-04 04:38:50,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 04:38:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:38:51,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 04:38:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:38:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-04 04:38:52,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:38:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-04 04:38:52,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116740149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:38:52,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:38:52,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2021-11-04 04:38:52,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448164819] [2021-11-04 04:38:52,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:38:52,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 04:38:52,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:38:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 04:38:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-04 04:38:52,526 INFO L87 Difference]: Start difference. First operand 11403 states and 15299 transitions. Second operand has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:38:54,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:22,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:34,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:37,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:40,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:42,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:45,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:39:48,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:40:17,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:40:19,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:41:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:41:52,611 INFO L93 Difference]: Finished difference Result 75265 states and 102890 transitions. [2021-11-04 04:41:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-04 04:41:52,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 0 states have call successors, (0), 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 138 [2021-11-04 04:41:52,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:41:52,820 INFO L225 Difference]: With dead ends: 75265 [2021-11-04 04:41:52,821 INFO L226 Difference]: Without dead ends: 63948 [2021-11-04 04:41:52,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 867.72ms TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2021-11-04 04:41:52,845 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11371 mSDsluCounter, 66486 mSDsCounter, 0 mSdLazyCounter, 81817 mSolverCounterSat, 181 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151107.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11371 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 435.14ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 81817 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176130.35ms IncrementalHoareTripleChecker+Time [2021-11-04 04:41:52,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11371 Valid, 0 Invalid, 82007 Unknown, 0 Unchecked, 435.14ms Time], IncrementalHoareTripleChecker [181 Valid, 81817 Invalid, 9 Unknown, 0 Unchecked, 176130.35ms Time] [2021-11-04 04:41:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63948 states. [2021-11-04 04:41:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63948 to 22603. [2021-11-04 04:41:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22586 states have (on average 1.34078632781369) internal successors, (30283), 22602 states have internal predecessors, (30283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:41:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 30283 transitions. [2021-11-04 04:41:53,490 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 30283 transitions. Word has length 138 [2021-11-04 04:41:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:41:53,490 INFO L470 AbstractCegarLoop]: Abstraction has 22603 states and 30283 transitions. [2021-11-04 04:41:53,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:41:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 30283 transitions. [2021-11-04 04:41:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-04 04:41:53,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:41:53,501 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-04 04:41:53,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 04:41:53,723 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,SelfDestructingSolverStorable7 [2021-11-04 04:41:53,724 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)] === [2021-11-04 04:41:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:41:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1032725332, now seen corresponding path program 1 times [2021-11-04 04:41:53,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:41:53,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476977113] [2021-11-04 04:41:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:41:53,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:41:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:41:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-04 04:41:54,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:41:54,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476977113] [2021-11-04 04:41:54,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476977113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:41:54,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96475795] [2021-11-04 04:41:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:41:54,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:41:54,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:41:54,156 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) [2021-11-04 04:41:54,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 04:41:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:41:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 04:41:54,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:41:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-04 04:41:55,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:41:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-04 04:41:55,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96475795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:41:55,898 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:41:55,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-04 04:41:55,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237424242] [2021-11-04 04:41:55,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:41:55,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-04 04:41:55,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:41:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-04 04:41:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-04 04:41:55,900 INFO L87 Difference]: Start difference. First operand 22603 states and 30283 transitions. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 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) [2021-11-04 04:41:57,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:41:59,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:21,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:24,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:26,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:29,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:42:37,319 INFO L93 Difference]: Finished difference Result 45415 states and 61063 transitions. [2021-11-04 04:42:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 04:42:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 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 145 [2021-11-04 04:42:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:42:37,359 INFO L225 Difference]: With dead ends: 45415 [2021-11-04 04:42:37,359 INFO L226 Difference]: Without dead ends: 22901 [2021-11-04 04:42:37,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 372.59ms TimeCoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-04 04:42:37,386 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 6883 mSDsCounter, 0 mSdLazyCounter, 10475 mSolverCounterSat, 190 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33974.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.74ms SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 10475 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40623.35ms IncrementalHoareTripleChecker+Time [2021-11-04 04:42:37,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10670 Unknown, 0 Unchecked, 37.74ms Time], IncrementalHoareTripleChecker [190 Valid, 10475 Invalid, 5 Unknown, 0 Unchecked, 40623.35ms Time] [2021-11-04 04:42:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22901 states. [2021-11-04 04:42:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22901 to 22901. [2021-11-04 04:42:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22901 states, 22884 states have (on average 1.3363485404649538) internal successors, (30581), 22900 states have internal predecessors, (30581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:42:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22901 states to 22901 states and 30581 transitions. [2021-11-04 04:42:37,892 INFO L78 Accepts]: Start accepts. Automaton has 22901 states and 30581 transitions. Word has length 145 [2021-11-04 04:42:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:42:37,892 INFO L470 AbstractCegarLoop]: Abstraction has 22901 states and 30581 transitions. [2021-11-04 04:42:37,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 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) [2021-11-04 04:42:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 22901 states and 30581 transitions. [2021-11-04 04:42:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-04 04:42:37,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:42:37,902 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 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] [2021-11-04 04:42:37,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 04:42:38,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:42:38,120 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)] === [2021-11-04 04:42:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:42:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1818304308, now seen corresponding path program 2 times [2021-11-04 04:42:38,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:42:38,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105317841] [2021-11-04 04:42:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:42:38,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:42:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:42:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:42:38,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:42:38,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105317841] [2021-11-04 04:42:38,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105317841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:42:38,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:42:38,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:42:38,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977496512] [2021-11-04 04:42:38,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:42:38,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:42:38,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:42:38,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:42:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:42:38,329 INFO L87 Difference]: Start difference. First operand 22901 states and 30581 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) [2021-11-04 04:42:40,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:51,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:53,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:55,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:42:57,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:43:00,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:43:02,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:43:05,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:43:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:43:08,737 INFO L93 Difference]: Finished difference Result 45712 states and 61068 transitions. [2021-11-04 04:43:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:43:08,738 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 155 [2021-11-04 04:43:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:43:08,765 INFO L225 Difference]: With dead ends: 45712 [2021-11-04 04:43:08,765 INFO L226 Difference]: Without dead ends: 22921 [2021-11-04 04:43:08,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:43:08,789 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 6929 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26085.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6929 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29735.78ms IncrementalHoareTripleChecker+Time [2021-11-04 04:43:08,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 6937 Unknown, 0 Unchecked, 13.17ms Time], IncrementalHoareTripleChecker [0 Valid, 6929 Invalid, 8 Unknown, 0 Unchecked, 29735.78ms Time] [2021-11-04 04:43:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22921 states. [2021-11-04 04:43:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22921 to 22905. [2021-11-04 04:43:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22905 states, 22888 states have (on average 1.3362897588255855) internal successors, (30585), 22904 states have internal predecessors, (30585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:43:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22905 states to 22905 states and 30585 transitions. [2021-11-04 04:43:09,294 INFO L78 Accepts]: Start accepts. Automaton has 22905 states and 30585 transitions. Word has length 155 [2021-11-04 04:43:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:43:09,295 INFO L470 AbstractCegarLoop]: Abstraction has 22905 states and 30585 transitions. [2021-11-04 04:43:09,295 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) [2021-11-04 04:43:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 22905 states and 30585 transitions. [2021-11-04 04:43:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-04 04:43:09,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:43:09,305 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 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] [2021-11-04 04:43:09,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 04:43:09,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-04 04:43:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:43:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1486291954, now seen corresponding path program 1 times [2021-11-04 04:43:09,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:43:09,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222615052] [2021-11-04 04:43:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:43:09,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:43:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:43:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:43:09,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:43:09,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222615052] [2021-11-04 04:43:09,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222615052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:43:09,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391773671] [2021-11-04 04:43:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:43:09,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:43:09,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:43:09,545 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) [2021-11-04 04:43:09,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 04:43:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:43:40,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 04:43:40,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:43:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:43:40,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:43:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:43:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391773671] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:43:41,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:43:41,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-04 04:43:41,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109996062] [2021-11-04 04:43:41,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:43:41,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 04:43:41,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:43:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 04:43:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:43:41,229 INFO L87 Difference]: Start difference. First operand 22905 states and 30585 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:43:43,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:07,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:11,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:15,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:17,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:20,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:22,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:24,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:27,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:30,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:33,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:35,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:51,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:54,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:56,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:44:58,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:45:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:45:06,470 INFO L93 Difference]: Finished difference Result 68509 states and 91519 transitions. [2021-11-04 04:45:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:45:06,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 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 159 [2021-11-04 04:45:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:45:06,557 INFO L225 Difference]: With dead ends: 68509 [2021-11-04 04:45:06,557 INFO L226 Difference]: Without dead ends: 45714 [2021-11-04 04:45:06,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.85ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:45:06,628 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3362 mSDsluCounter, 18315 mSDsCounter, 0 mSdLazyCounter, 24121 mSolverCounterSat, 7 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72497.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.79ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24121 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83819.44ms IncrementalHoareTripleChecker+Time [2021-11-04 04:45:06,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3362 Valid, 0 Invalid, 24144 Unknown, 0 Unchecked, 66.79ms Time], IncrementalHoareTripleChecker [7 Valid, 24121 Invalid, 16 Unknown, 0 Unchecked, 83819.44ms Time] [2021-11-04 04:45:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45714 states. [2021-11-04 04:45:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45714 to 22945. [2021-11-04 04:45:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22945 states, 22928 states have (on average 1.3360519888346127) internal successors, (30633), 22944 states have internal predecessors, (30633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:45:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22945 states to 22945 states and 30633 transitions. [2021-11-04 04:45:07,486 INFO L78 Accepts]: Start accepts. Automaton has 22945 states and 30633 transitions. Word has length 159 [2021-11-04 04:45:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:45:07,486 INFO L470 AbstractCegarLoop]: Abstraction has 22945 states and 30633 transitions. [2021-11-04 04:45:07,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:45:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 22945 states and 30633 transitions. [2021-11-04 04:45:07,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-04 04:45:07,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:45:07,496 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 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] [2021-11-04 04:45:07,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 04:45:07,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:45:07,720 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)] === [2021-11-04 04:45:07,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:45:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1412672632, now seen corresponding path program 1 times [2021-11-04 04:45:07,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:45:07,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011269177] [2021-11-04 04:45:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:45:07,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:45:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:45:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:45:08,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:45:08,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011269177] [2021-11-04 04:45:08,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011269177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:45:08,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:45:08,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-04 04:45:08,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503253694] [2021-11-04 04:45:08,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:45:08,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 04:45:08,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:45:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 04:45:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:45:08,048 INFO L87 Difference]: Start difference. First operand 22945 states and 30633 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) [2021-11-04 04:45:10,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:45:43,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:45:46,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:45:49,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:00,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:08,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:11,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:21,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:23,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:25,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:34,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:37,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:39,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:41,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:46,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:46:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:46:51,492 INFO L93 Difference]: Finished difference Result 103470 states and 139599 transitions. [2021-11-04 04:46:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-04 04:46:51,492 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 160 [2021-11-04 04:46:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:46:51,632 INFO L225 Difference]: With dead ends: 103470 [2021-11-04 04:46:51,632 INFO L226 Difference]: Without dead ends: 80635 [2021-11-04 04:46:51,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 305.79ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-04 04:46:51,680 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18954 mSDsluCounter, 30639 mSDsCounter, 0 mSdLazyCounter, 37979 mSolverCounterSat, 0 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87020.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18954 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 134.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37979 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100012.87ms IncrementalHoareTripleChecker+Time [2021-11-04 04:46:51,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18954 Valid, 0 Invalid, 37994 Unknown, 0 Unchecked, 134.92ms Time], IncrementalHoareTripleChecker [0 Valid, 37979 Invalid, 15 Unknown, 0 Unchecked, 100012.87ms Time] [2021-11-04 04:46:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80635 states. [2021-11-04 04:46:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80635 to 22993. [2021-11-04 04:46:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22993 states, 22976 states have (on average 1.335349930362117) internal successors, (30681), 22992 states have internal predecessors, (30681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:46:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22993 states to 22993 states and 30681 transitions. [2021-11-04 04:46:53,206 INFO L78 Accepts]: Start accepts. Automaton has 22993 states and 30681 transitions. Word has length 160 [2021-11-04 04:46:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:46:53,206 INFO L470 AbstractCegarLoop]: Abstraction has 22993 states and 30681 transitions. [2021-11-04 04:46:53,206 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) [2021-11-04 04:46:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 22993 states and 30681 transitions. [2021-11-04 04:46:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-04 04:46:53,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:46:53,214 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:46:53,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 04:46:53,214 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-04 04:46:53,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:46:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -349051671, now seen corresponding path program 1 times [2021-11-04 04:46:53,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:46:53,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220685909] [2021-11-04 04:46:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:46:53,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:46:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:46:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-04 04:46:53,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:46:53,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220685909] [2021-11-04 04:46:53,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220685909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:46:53,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:46:53,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:46:53,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973725845] [2021-11-04 04:46:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:46:53,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:46:53,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:46:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:46:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:46:53,360 INFO L87 Difference]: Start difference. First operand 22993 states and 30681 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) [2021-11-04 04:46:55,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:21,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:27,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:29,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:32,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:34,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:43,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:47:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:47:52,418 INFO L93 Difference]: Finished difference Result 83172 states and 112369 transitions. [2021-11-04 04:47:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 04:47:52,418 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 163 [2021-11-04 04:47:52,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:47:52,508 INFO L225 Difference]: With dead ends: 83172 [2021-11-04 04:47:52,509 INFO L226 Difference]: Without dead ends: 60289 [2021-11-04 04:47:52,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.05ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:47:52,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9550 mSDsluCounter, 16785 mSDsCounter, 0 mSdLazyCounter, 24887 mSolverCounterSat, 62 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48299.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9550 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.97ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 24887 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56170.62ms IncrementalHoareTripleChecker+Time [2021-11-04 04:47:52,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9550 Valid, 0 Invalid, 24956 Unknown, 0 Unchecked, 59.97ms Time], IncrementalHoareTripleChecker [62 Valid, 24887 Invalid, 7 Unknown, 0 Unchecked, 56170.62ms Time] [2021-11-04 04:47:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60289 states. [2021-11-04 04:47:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60289 to 23065. [2021-11-04 04:47:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23065 states, 23048 states have (on average 1.3343023255813953) internal successors, (30753), 23064 states have internal predecessors, (30753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:47:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23065 states to 23065 states and 30753 transitions. [2021-11-04 04:47:53,947 INFO L78 Accepts]: Start accepts. Automaton has 23065 states and 30753 transitions. Word has length 163 [2021-11-04 04:47:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:47:53,948 INFO L470 AbstractCegarLoop]: Abstraction has 23065 states and 30753 transitions. [2021-11-04 04:47:53,948 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) [2021-11-04 04:47:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 23065 states and 30753 transitions. [2021-11-04 04:47:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-04 04:47:53,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:47:53,961 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 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] [2021-11-04 04:47:53,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 04:47:53,962 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)] === [2021-11-04 04:47:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:47:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash 512925348, now seen corresponding path program 1 times [2021-11-04 04:47:53,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:47:53,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125781601] [2021-11-04 04:47:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:47:53,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:47:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:47:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:47:54,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:47:54,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125781601] [2021-11-04 04:47:54,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125781601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:47:54,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:47:54,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:47:54,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855255902] [2021-11-04 04:47:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:47:54,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:47:54,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:47:54,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:47:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:47:54,232 INFO L87 Difference]: Start difference. First operand 23065 states and 30753 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) [2021-11-04 04:47:56,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:21,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:28,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:31,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:36,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:38,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:41,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:44,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:47,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:50,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:48:58,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:49:01,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:49:03,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:49:06,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:49:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:49:13,444 INFO L93 Difference]: Finished difference Result 109293 states and 146688 transitions. [2021-11-04 04:49:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:49:13,445 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 169 [2021-11-04 04:49:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:49:13,589 INFO L225 Difference]: With dead ends: 109293 [2021-11-04 04:49:13,590 INFO L226 Difference]: Without dead ends: 86338 [2021-11-04 04:49:13,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56.58ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:49:13,633 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15019 mSDsluCounter, 14176 mSDsCounter, 0 mSdLazyCounter, 21027 mSolverCounterSat, 22 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64747.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15019 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.10ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 21027 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74368.10ms IncrementalHoareTripleChecker+Time [2021-11-04 04:49:13,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15019 Valid, 0 Invalid, 21063 Unknown, 0 Unchecked, 67.10ms Time], IncrementalHoareTripleChecker [22 Valid, 21027 Invalid, 14 Unknown, 0 Unchecked, 74368.10ms Time] [2021-11-04 04:49:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86338 states. [2021-11-04 04:49:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86338 to 23101. [2021-11-04 04:49:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23101 states, 23084 states have (on average 1.3337809738346906) internal successors, (30789), 23100 states have internal predecessors, (30789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:49:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23101 states to 23101 states and 30789 transitions. [2021-11-04 04:49:15,447 INFO L78 Accepts]: Start accepts. Automaton has 23101 states and 30789 transitions. Word has length 169 [2021-11-04 04:49:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:49:15,447 INFO L470 AbstractCegarLoop]: Abstraction has 23101 states and 30789 transitions. [2021-11-04 04:49:15,447 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) [2021-11-04 04:49:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 23101 states and 30789 transitions. [2021-11-04 04:49:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-04 04:49:15,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:49:15,455 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 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] [2021-11-04 04:49:15,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 04:49:15,455 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)] === [2021-11-04 04:49:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:49:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 94357420, now seen corresponding path program 1 times [2021-11-04 04:49:15,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:49:15,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679438913] [2021-11-04 04:49:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:49:15,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:49:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:49:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-04 04:49:15,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:49:15,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679438913] [2021-11-04 04:49:15,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679438913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:49:15,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:49:15,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-04 04:49:15,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192385361] [2021-11-04 04:49:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:49:15,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 04:49:15,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:49:15,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 04:49:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-04 04:49:15,708 INFO L87 Difference]: Start difference. First operand 23101 states and 30789 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) [2021-11-04 04:49:17,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:49:57,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15