./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.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 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 17:09:11,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:09:11,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:09:11,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:09:11,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:09:11,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:09:11,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:09:11,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:09:11,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:09:11,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:09:11,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:09:11,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:09:11,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:09:11,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:09:11,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:09:11,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:09:11,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:09:11,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:09:11,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:09:11,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:09:11,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:09:11,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:09:11,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:09:11,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:09:11,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:09:11,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:09:11,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:09:11,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:09:11,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:09:11,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:09:11,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:09:11,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:09:11,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:09:11,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:09:11,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:09:11,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:09:11,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:09:11,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:09:11,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:09:11,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:09:11,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:09:11,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:09:11,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:09:11,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:09:11,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:09:11,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:09:11,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:09:11,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:09:11,367 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:09:11,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:09:11,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:09:11,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:09:11,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:09:11,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:09:11,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:09:11,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:09:11,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:09:11,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:09:11,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:09:11,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:09:11,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:09:11,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:09:11,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:09:11,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:09:11,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:09:11,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:09:11,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:09:11,372 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:09:11,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:09:11,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:09:11,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:09:11,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 [2021-11-05 17:09:11,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:09:11,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:09:11,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:09:11,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:09:11,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:09:11,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 17:09:11,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f35b7372/93a87533960f46198dde526c8487ac33/FLAG4d13942a4 [2021-11-05 17:09:12,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:09:12,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 17:09:12,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f35b7372/93a87533960f46198dde526c8487ac33/FLAG4d13942a4 [2021-11-05 17:09:12,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f35b7372/93a87533960f46198dde526c8487ac33 [2021-11-05 17:09:12,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:09:12,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:09:12,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:09:12,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:09:12,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:09:12,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:09:12" (1/1) ... [2021-11-05 17:09:12,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199f8247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:12, skipping insertion in model container [2021-11-05 17:09:12,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:09:12" (1/1) ... [2021-11-05 17:09:12,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:09:12,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:09:13,134 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2021-11-05 17:09:13,141 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2021-11-05 17:09:13,450 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_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2021-11-05 17:09:14,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:09:14,258 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:09:14,381 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2021-11-05 17:09:14,394 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2021-11-05 17:09:14,404 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_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2021-11-05 17:09:14,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:09:14,824 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:09:14,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14 WrapperNode [2021-11-05 17:09:14,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:09:14,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:09:14,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:09:14,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:09:14,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:14,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:09:15,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:09:15,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:09:15,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:09:15,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:09:15,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:09:15,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:09:15,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:09:15,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (1/1) ... [2021-11-05 17:09:15,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:09:15,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:09:15,989 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) [2021-11-05 17:09:16,011 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 [2021-11-05 17:09:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-05 17:09:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 17:09:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 17:09:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 17:09:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:09:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 17:09:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:09:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:09:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:09:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 17:09:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 17:09:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:09:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:09:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:09:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:09:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 17:09:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:09:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:09:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:09:47,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:09:47,217 INFO L299 CfgBuilder]: Removed 1965 assume(true) statements. [2021-11-05 17:09:47,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:09:47 BoogieIcfgContainer [2021-11-05 17:09:47,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:09:47,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:09:47,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:09:47,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:09:47,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:09:12" (1/3) ... [2021-11-05 17:09:47,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7700478f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:09:47, skipping insertion in model container [2021-11-05 17:09:47,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:09:14" (2/3) ... [2021-11-05 17:09:47,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7700478f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:09:47, skipping insertion in model container [2021-11-05 17:09:47,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:09:47" (3/3) ... [2021-11-05 17:09:47,228 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 17:09:47,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:09:47,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-05 17:09:47,282 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:09:47,289 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 [2021-11-05 17:09:47,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-05 17:09:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 1924 states, 1904 states have (on average 1.3928571428571428) internal successors, (2652), 1923 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 17:09:47,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:47,358 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] [2021-11-05 17:09:47,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash 579665989, now seen corresponding path program 1 times [2021-11-05 17:09:47,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:47,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423301763] [2021-11-05 17:09:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:47,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:48,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:48,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423301763] [2021-11-05 17:09:48,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423301763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:48,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:48,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:09:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003413572] [2021-11-05 17:09:48,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:48,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:48,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:48,296 INFO L87 Difference]: Start difference. First operand has 1924 states, 1904 states have (on average 1.3928571428571428) internal successors, (2652), 1923 states have internal predecessors, (2652), 0 states have call successors, (0), 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 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:48,798 INFO L93 Difference]: Finished difference Result 5444 states and 7518 transitions. [2021-11-05 17:09:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-05 17:09:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:48,827 INFO L225 Difference]: With dead ends: 5444 [2021-11-05 17:09:48,828 INFO L226 Difference]: Without dead ends: 3494 [2021-11-05 17:09:48,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:48,839 INFO L933 BasicCegarLoop]: 2554 mSDtfsCounter, 2298 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 258.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 4942 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 296.63ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:48,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 4942 Invalid, 23 Unknown, 0 Unchecked, 22.90ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 296.63ms Time] [2021-11-05 17:09:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-11-05 17:09:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3460. [2021-11-05 17:09:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3441 states have (on average 1.3516419645451903) internal successors, (4651), 3459 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4651 transitions. [2021-11-05 17:09:48,988 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4651 transitions. Word has length 52 [2021-11-05 17:09:48,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:48,989 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 4651 transitions. [2021-11-05 17:09:48,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4651 transitions. [2021-11-05 17:09:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 17:09:48,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:48,992 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] [2021-11-05 17:09:48,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:09:48,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash -867049352, now seen corresponding path program 1 times [2021-11-05 17:09:48,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:48,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751957278] [2021-11-05 17:09:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:48,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:49,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:49,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751957278] [2021-11-05 17:09:49,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751957278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:49,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:49,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:09:49,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360489433] [2021-11-05 17:09:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:49,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:49,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:49,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:49,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:49,408 INFO L87 Difference]: Start difference. First operand 3460 states and 4651 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:49,838 INFO L93 Difference]: Finished difference Result 8650 states and 11791 transitions. [2021-11-05 17:09:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:49,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-05 17:09:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:49,862 INFO L225 Difference]: With dead ends: 8650 [2021-11-05 17:09:49,863 INFO L226 Difference]: Without dead ends: 5321 [2021-11-05 17:09:49,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:49,871 INFO L933 BasicCegarLoop]: 2529 mSDtfsCounter, 1577 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.70ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:49,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 4892 Invalid, 23 Unknown, 0 Unchecked, 8.70ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 241.70ms Time] [2021-11-05 17:09:49,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2021-11-05 17:09:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5309. [2021-11-05 17:09:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5290 states have (on average 1.3756143667296787) internal successors, (7277), 5308 states have internal predecessors, (7277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 7277 transitions. [2021-11-05 17:09:50,016 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 7277 transitions. Word has length 56 [2021-11-05 17:09:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:50,017 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 7277 transitions. [2021-11-05 17:09:50,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 7277 transitions. [2021-11-05 17:09:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 17:09:50,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:50,027 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] [2021-11-05 17:09:50,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 17:09:50,028 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash -342745774, now seen corresponding path program 1 times [2021-11-05 17:09:50,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:50,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892584804] [2021-11-05 17:09:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:50,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:50,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:50,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892584804] [2021-11-05 17:09:50,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892584804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:50,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:50,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:09:50,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537938102] [2021-11-05 17:09:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:50,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:50,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:50,382 INFO L87 Difference]: Start difference. First operand 5309 states and 7277 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:51,204 INFO L93 Difference]: Finished difference Result 12569 states and 17114 transitions. [2021-11-05 17:09:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 17:09:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:51,238 INFO L225 Difference]: With dead ends: 12569 [2021-11-05 17:09:51,238 INFO L226 Difference]: Without dead ends: 7391 [2021-11-05 17:09:51,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:51,255 INFO L933 BasicCegarLoop]: 2743 mSDtfsCounter, 1403 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 597.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 5043 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 658.30ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:51,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 5043 Invalid, 86 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 658.30ms Time] [2021-11-05 17:09:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2021-11-05 17:09:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 7339. [2021-11-05 17:09:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7339 states, 7320 states have (on average 1.3580601092896174) internal successors, (9941), 7338 states have internal predecessors, (9941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7339 states to 7339 states and 9941 transitions. [2021-11-05 17:09:51,464 INFO L78 Accepts]: Start accepts. Automaton has 7339 states and 9941 transitions. Word has length 57 [2021-11-05 17:09:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:51,466 INFO L470 AbstractCegarLoop]: Abstraction has 7339 states and 9941 transitions. [2021-11-05 17:09:51,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7339 states and 9941 transitions. [2021-11-05 17:09:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 17:09:51,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:51,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:09:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 17:09:51,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1504564892, now seen corresponding path program 1 times [2021-11-05 17:09:51,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:51,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170089154] [2021-11-05 17:09:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:51,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:51,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170089154] [2021-11-05 17:09:51,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170089154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:51,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:51,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:09:51,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574276308] [2021-11-05 17:09:51,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:51,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:09:51,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:51,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:09:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:09:51,943 INFO L87 Difference]: Start difference. First operand 7339 states and 9941 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:54,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:09:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:54,429 INFO L93 Difference]: Finished difference Result 14571 states and 19768 transitions. [2021-11-05 17:09:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:09:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-05 17:09:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:54,457 INFO L225 Difference]: With dead ends: 14571 [2021-11-05 17:09:54,458 INFO L226 Difference]: Without dead ends: 7339 [2021-11-05 17:09:54,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:09:54,472 INFO L933 BasicCegarLoop]: 2528 mSDtfsCounter, 3 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2164.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7577 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2279.89ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:54,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7577 Invalid, 13 Unknown, 0 Unchecked, 8.93ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2279.89ms Time] [2021-11-05 17:09:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2021-11-05 17:09:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 7339. [2021-11-05 17:09:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7339 states, 7320 states have (on average 1.356967213114754) internal successors, (9933), 7338 states have internal predecessors, (9933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7339 states to 7339 states and 9933 transitions. [2021-11-05 17:09:54,675 INFO L78 Accepts]: Start accepts. Automaton has 7339 states and 9933 transitions. Word has length 80 [2021-11-05 17:09:54,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:54,675 INFO L470 AbstractCegarLoop]: Abstraction has 7339 states and 9933 transitions. [2021-11-05 17:09:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7339 states and 9933 transitions. [2021-11-05 17:09:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 17:09:54,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:54,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:09:54,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 17:09:54,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:54,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 216425290, now seen corresponding path program 1 times [2021-11-05 17:09:54,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:54,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557520018] [2021-11-05 17:09:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:54,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 17:09:55,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:55,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557520018] [2021-11-05 17:09:55,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557520018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:55,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:55,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:09:55,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389294199] [2021-11-05 17:09:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:55,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:55,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:55,103 INFO L87 Difference]: Start difference. First operand 7339 states and 9933 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:55,453 INFO L93 Difference]: Finished difference Result 7339 states and 9933 transitions. [2021-11-05 17:09:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:55,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-05 17:09:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:55,491 INFO L225 Difference]: With dead ends: 7339 [2021-11-05 17:09:55,494 INFO L226 Difference]: Without dead ends: 7315 [2021-11-05 17:09:55,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:55,500 INFO L933 BasicCegarLoop]: 2493 mSDtfsCounter, 2210 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.50ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.55ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:55,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2210 Valid, 2659 Invalid, 74 Unknown, 0 Unchecked, 7.50ms Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 242.55ms Time] [2021-11-05 17:09:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2021-11-05 17:09:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 7315. [2021-11-05 17:09:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 7308 states have (on average 1.3509852216748768) internal successors, (9873), 7314 states have internal predecessors, (9873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 9873 transitions. [2021-11-05 17:09:55,743 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 9873 transitions. Word has length 84 [2021-11-05 17:09:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:55,745 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 9873 transitions. [2021-11-05 17:09:55,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 9873 transitions. [2021-11-05 17:09:55,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 17:09:55,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:55,749 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:09:55,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 17:09:55,750 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1570070938, now seen corresponding path program 1 times [2021-11-05 17:09:55,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:55,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594973920] [2021-11-05 17:09:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:55,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:56,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:56,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594973920] [2021-11-05 17:09:56,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594973920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:56,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:56,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:09:56,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227008141] [2021-11-05 17:09:56,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:56,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:09:56,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:09:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:09:56,134 INFO L87 Difference]: Start difference. First operand 7315 states and 9873 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:56,652 INFO L93 Difference]: Finished difference Result 21437 states and 29042 transitions. [2021-11-05 17:09:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:09:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-05 17:09:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:56,691 INFO L225 Difference]: With dead ends: 21437 [2021-11-05 17:09:56,691 INFO L226 Difference]: Without dead ends: 14253 [2021-11-05 17:09:56,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:09:56,713 INFO L933 BasicCegarLoop]: 4822 mSDtfsCounter, 4818 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.29ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.86ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:56,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4818 Valid, 7322 Invalid, 16 Unknown, 0 Unchecked, 14.29ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 185.86ms Time] [2021-11-05 17:09:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2021-11-05 17:09:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 7317. [2021-11-05 17:09:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7317 states, 7310 states have (on average 1.3508891928864568) internal successors, (9875), 7316 states have internal predecessors, (9875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 9875 transitions. [2021-11-05 17:09:57,087 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 9875 transitions. Word has length 85 [2021-11-05 17:09:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:57,088 INFO L470 AbstractCegarLoop]: Abstraction has 7317 states and 9875 transitions. [2021-11-05 17:09:57,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 9875 transitions. [2021-11-05 17:09:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 17:09:57,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:57,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:09:57,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 17:09:57,097 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:57,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1945784990, now seen corresponding path program 1 times [2021-11-05 17:09:57,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:57,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086826425] [2021-11-05 17:09:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:57,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:57,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:57,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086826425] [2021-11-05 17:09:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086826425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:57,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:57,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:09:57,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315903601] [2021-11-05 17:09:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:57,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:57,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:57,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:57,462 INFO L87 Difference]: Start difference. First operand 7317 states and 9875 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:59,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:09:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:59,907 INFO L93 Difference]: Finished difference Result 14505 states and 19606 transitions. [2021-11-05 17:09:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:59,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-05 17:09:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:59,927 INFO L225 Difference]: With dead ends: 14505 [2021-11-05 17:09:59,927 INFO L226 Difference]: Without dead ends: 7311 [2021-11-05 17:09:59,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:59,942 INFO L933 BasicCegarLoop]: 2505 mSDtfsCounter, 0 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2116.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5005 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2273.22ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:59,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5005 Invalid, 4 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2273.22ms Time] [2021-11-05 17:09:59,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2021-11-05 17:10:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7144. [2021-11-05 17:10:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 7137 states have (on average 1.3549110270421745) internal successors, (9670), 7143 states have internal predecessors, (9670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 9670 transitions. [2021-11-05 17:10:00,149 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 9670 transitions. Word has length 87 [2021-11-05 17:10:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:00,149 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 9670 transitions. [2021-11-05 17:10:00,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 9670 transitions. [2021-11-05 17:10:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 17:10:00,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:00,154 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] [2021-11-05 17:10:00,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 17:10:00,154 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1066435127, now seen corresponding path program 1 times [2021-11-05 17:10:00,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:00,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414083668] [2021-11-05 17:10:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:00,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:10:00,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:00,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414083668] [2021-11-05 17:10:00,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414083668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:00,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:10:00,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:10:00,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739401543] [2021-11-05 17:10:00,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:00,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:10:00,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:10:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:10:00,520 INFO L87 Difference]: Start difference. First operand 7144 states and 9670 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:02,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:10:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:03,606 INFO L93 Difference]: Finished difference Result 16336 states and 22139 transitions. [2021-11-05 17:10:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:10:03,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-05 17:10:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:03,631 INFO L225 Difference]: With dead ends: 16336 [2021-11-05 17:10:03,631 INFO L226 Difference]: Without dead ends: 9323 [2021-11-05 17:10:03,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:10:03,646 INFO L933 BasicCegarLoop]: 2595 mSDtfsCounter, 1776 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2676.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 4524 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2851.81ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:03,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 4524 Invalid, 140 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [53 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 2851.81ms Time] [2021-11-05 17:10:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9323 states. [2021-11-05 17:10:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9323 to 9236. [2021-11-05 17:10:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 9229 states have (on average 1.3448911041282912) internal successors, (12412), 9235 states have internal predecessors, (12412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 12412 transitions. [2021-11-05 17:10:03,914 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 12412 transitions. Word has length 89 [2021-11-05 17:10:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:03,915 INFO L470 AbstractCegarLoop]: Abstraction has 9236 states and 12412 transitions. [2021-11-05 17:10:03,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 12412 transitions. [2021-11-05 17:10:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 17:10:03,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:03,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:10:03,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 17:10:03,919 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1732776911, now seen corresponding path program 1 times [2021-11-05 17:10:03,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:03,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605343898] [2021-11-05 17:10:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:03,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:10:04,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:04,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605343898] [2021-11-05 17:10:04,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605343898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:04,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:10:04,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:10:04,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615903633] [2021-11-05 17:10:04,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:04,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:10:04,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:04,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:10:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:10:04,346 INFO L87 Difference]: Start difference. First operand 9236 states and 12412 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:06,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:10:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:06,964 INFO L93 Difference]: Finished difference Result 20842 states and 28236 transitions. [2021-11-05 17:10:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:10:06,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 17:10:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:06,992 INFO L225 Difference]: With dead ends: 20842 [2021-11-05 17:10:06,992 INFO L226 Difference]: Without dead ends: 11737 [2021-11-05 17:10:07,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:10:07,014 INFO L933 BasicCegarLoop]: 3927 mSDtfsCounter, 1974 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2248.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.69ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2366.24ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:07,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 5853 Invalid, 35 Unknown, 0 Unchecked, 5.69ms Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2366.24ms Time] [2021-11-05 17:10:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-11-05 17:10:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 11734. [2021-11-05 17:10:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11727 states have (on average 1.3580625906028823) internal successors, (15926), 11733 states have internal predecessors, (15926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 15926 transitions. [2021-11-05 17:10:07,385 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 15926 transitions. Word has length 93 [2021-11-05 17:10:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:07,385 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 15926 transitions. [2021-11-05 17:10:07,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 15926 transitions. [2021-11-05 17:10:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 17:10:07,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:07,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 17:10:07,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 17:10:07,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1961794388, now seen corresponding path program 1 times [2021-11-05 17:10:07,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:07,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465790518] [2021-11-05 17:10:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:07,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 17:10:08,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:08,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465790518] [2021-11-05 17:10:08,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465790518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:08,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:10:08,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:10:08,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291349846] [2021-11-05 17:10:08,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:08,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:10:08,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:10:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:10:08,117 INFO L87 Difference]: Start difference. First operand 11734 states and 15926 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:10,342 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 [] [2021-11-05 17:10:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:10,651 INFO L93 Difference]: Finished difference Result 23404 states and 31797 transitions. [2021-11-05 17:10:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:10:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 107 [2021-11-05 17:10:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:10,676 INFO L225 Difference]: With dead ends: 23404 [2021-11-05 17:10:10,676 INFO L226 Difference]: Without dead ends: 11794 [2021-11-05 17:10:10,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 126.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:10:10,695 INFO L933 BasicCegarLoop]: 2503 mSDtfsCounter, 229 mSDsluCounter, 4849 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2181.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 7352 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2220.23ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:10,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 7352 Invalid, 15 Unknown, 0 Unchecked, 5.25ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2220.23ms Time] [2021-11-05 17:10:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2021-11-05 17:10:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 11734. [2021-11-05 17:10:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11727 states have (on average 1.3578067707000938) internal successors, (15923), 11733 states have internal predecessors, (15923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 15923 transitions. [2021-11-05 17:10:11,134 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 15923 transitions. Word has length 107 [2021-11-05 17:10:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:11,135 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 15923 transitions. [2021-11-05 17:10:11,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 15923 transitions. [2021-11-05 17:10:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 17:10:11,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:11,145 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 17:10:11,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 17:10:11,146 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1759970454, now seen corresponding path program 1 times [2021-11-05 17:10:11,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:11,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755523445] [2021-11-05 17:10:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:11,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 17:10:12,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:12,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755523445] [2021-11-05 17:10:12,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755523445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:12,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:10:12,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 17:10:12,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269456736] [2021-11-05 17:10:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:12,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 17:10:12,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 17:10:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:10:12,018 INFO L87 Difference]: Start difference. First operand 11734 states and 15923 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:14,608 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 [] [2021-11-05 17:10:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:16,111 INFO L93 Difference]: Finished difference Result 34001 states and 46421 transitions. [2021-11-05 17:10:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 17:10:16,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 107 [2021-11-05 17:10:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:16,169 INFO L225 Difference]: With dead ends: 34001 [2021-11-05 17:10:16,169 INFO L226 Difference]: Without dead ends: 22371 [2021-11-05 17:10:16,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 823.75ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 17:10:16,192 INFO L933 BasicCegarLoop]: 4138 mSDtfsCounter, 2360 mSDsluCounter, 18814 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2918.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 22952 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.44ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2990.57ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:16,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2360 Valid, 22952 Invalid, 230 Unknown, 0 Unchecked, 18.44ms Time], IncrementalHoareTripleChecker [25 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2990.57ms Time] [2021-11-05 17:10:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22371 states. [2021-11-05 17:10:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22371 to 11734. [2021-11-05 17:10:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11727 states have (on average 1.3575509507973054) internal successors, (15920), 11733 states have internal predecessors, (15920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 15920 transitions. [2021-11-05 17:10:16,603 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 15920 transitions. Word has length 107 [2021-11-05 17:10:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:16,604 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 15920 transitions. [2021-11-05 17:10:16,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 15920 transitions. [2021-11-05 17:10:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 17:10:16,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:16,614 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 17:10:16,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 17:10:16,615 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -889857966, now seen corresponding path program 1 times [2021-11-05 17:10:16,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:16,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26305687] [2021-11-05 17:10:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:16,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 17:10:17,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:17,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26305687] [2021-11-05 17:10:17,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26305687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:17,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:10:17,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:10:17,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594588984] [2021-11-05 17:10:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:10:17,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:10:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:10:17,839 INFO L87 Difference]: Start difference. First operand 11734 states and 15920 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:18,254 INFO L93 Difference]: Finished difference Result 23339 states and 31697 transitions. [2021-11-05 17:10:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:10:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 113 [2021-11-05 17:10:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:18,281 INFO L225 Difference]: With dead ends: 23339 [2021-11-05 17:10:18,281 INFO L226 Difference]: Without dead ends: 11735 [2021-11-05 17:10:18,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:10:18,301 INFO L933 BasicCegarLoop]: 2501 mSDtfsCounter, 0 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4985 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.21ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:18,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4985 Invalid, 18 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 108.21ms Time] [2021-11-05 17:10:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2021-11-05 17:10:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 11735. [2021-11-05 17:10:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11735 states, 11728 states have (on average 1.3575204638472034) internal successors, (15921), 11734 states have internal predecessors, (15921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11735 states to 11735 states and 15921 transitions. [2021-11-05 17:10:18,859 INFO L78 Accepts]: Start accepts. Automaton has 11735 states and 15921 transitions. Word has length 113 [2021-11-05 17:10:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:18,859 INFO L470 AbstractCegarLoop]: Abstraction has 11735 states and 15921 transitions. [2021-11-05 17:10:18,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11735 states and 15921 transitions. [2021-11-05 17:10:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 17:10:18,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:18,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 17:10:18,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 17:10:18,872 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:18,873 INFO L85 PathProgramCache]: Analyzing trace with hash 381175134, now seen corresponding path program 1 times [2021-11-05 17:10:18,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:18,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192749246] [2021-11-05 17:10:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:18,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 17:10:19,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:19,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192749246] [2021-11-05 17:10:19,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192749246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:10:19,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613556270] [2021-11-05 17:10:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:19,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:10:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:10:19,736 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) [2021-11-05 17:10:19,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 17:10:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:21,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 5709 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 17:10:21,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:10:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 17:10:22,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:10:22,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613556270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:22,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:10:22,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 17:10:22,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263363504] [2021-11-05 17:10:22,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:22,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:10:22,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:10:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:10:22,135 INFO L87 Difference]: Start difference. First operand 11735 states and 15921 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:24,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:10:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:24,921 INFO L93 Difference]: Finished difference Result 23280 states and 31631 transitions. [2021-11-05 17:10:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:10:24,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 114 [2021-11-05 17:10:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:24,951 INFO L225 Difference]: With dead ends: 23280 [2021-11-05 17:10:24,951 INFO L226 Difference]: Without dead ends: 11666 [2021-11-05 17:10:24,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 304.66ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-05 17:10:24,978 INFO L933 BasicCegarLoop]: 2499 mSDtfsCounter, 5 mSDsluCounter, 7485 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2175.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9984 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2353.02ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:24,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 9984 Invalid, 19 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2353.02ms Time] [2021-11-05 17:10:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2021-11-05 17:10:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11632. [2021-11-05 17:10:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11625 states have (on average 1.3598279569892473) internal successors, (15808), 11631 states have internal predecessors, (15808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 15808 transitions. [2021-11-05 17:10:25,343 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 15808 transitions. Word has length 114 [2021-11-05 17:10:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:25,343 INFO L470 AbstractCegarLoop]: Abstraction has 11632 states and 15808 transitions. [2021-11-05 17:10:25,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 15808 transitions. [2021-11-05 17:10:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 17:10:25,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:25,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-05 17:10:25,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 17:10:25,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-05 17:10:25,575 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1711627223, now seen corresponding path program 1 times [2021-11-05 17:10:25,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:25,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962118671] [2021-11-05 17:10:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:25,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 17:10:26,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:26,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962118671] [2021-11-05 17:10:26,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962118671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:10:26,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:10:26,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:10:26,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341124965] [2021-11-05 17:10:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:10:26,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:10:26,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:10:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:10:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:10:26,038 INFO L87 Difference]: Start difference. First operand 11632 states and 15808 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:28,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:10:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:10:28,855 INFO L93 Difference]: Finished difference Result 28170 states and 38246 transitions. [2021-11-05 17:10:28,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:10:28,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 114 [2021-11-05 17:10:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:10:28,881 INFO L225 Difference]: With dead ends: 28170 [2021-11-05 17:10:28,881 INFO L226 Difference]: Without dead ends: 16670 [2021-11-05 17:10:28,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:10:28,900 INFO L933 BasicCegarLoop]: 4490 mSDtfsCounter, 3455 mSDsluCounter, 5495 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2240.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3455 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2384.02ms IncrementalHoareTripleChecker+Time [2021-11-05 17:10:28,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3455 Valid, 9985 Invalid, 29 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2384.02ms Time] [2021-11-05 17:10:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16670 states. [2021-11-05 17:10:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16670 to 11644. [2021-11-05 17:10:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11644 states, 11637 states have (on average 1.3594569047005243) internal successors, (15820), 11643 states have internal predecessors, (15820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11644 states to 11644 states and 15820 transitions. [2021-11-05 17:10:29,379 INFO L78 Accepts]: Start accepts. Automaton has 11644 states and 15820 transitions. Word has length 114 [2021-11-05 17:10:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:10:29,380 INFO L470 AbstractCegarLoop]: Abstraction has 11644 states and 15820 transitions. [2021-11-05 17:10:29,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:10:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 11644 states and 15820 transitions. [2021-11-05 17:10:29,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-05 17:10:29,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:10:29,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 17:10:29,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 17:10:29,387 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:10:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:10:29,388 INFO L85 PathProgramCache]: Analyzing trace with hash -677059800, now seen corresponding path program 1 times [2021-11-05 17:10:29,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:10:29,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036638351] [2021-11-05 17:10:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:29,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:10:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:10:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 17:10:30,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:10:30,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036638351] [2021-11-05 17:10:30,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036638351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:10:30,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098634452] [2021-11-05 17:10:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:10:30,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:10:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:10:30,253 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) [2021-11-05 17:10:30,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15