./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_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-dev-173e394 [2021-11-06 15:11:30,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:11:30,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:11:30,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:11:30,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:11:30,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:11:30,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:11:30,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:11:30,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:11:30,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:11:30,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:11:30,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:11:30,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:11:30,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:11:30,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:11:30,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:11:30,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:11:30,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:11:30,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:11:30,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:11:30,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:11:30,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:11:30,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:11:30,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:11:30,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:11:30,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:11:30,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:11:30,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:11:30,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:11:30,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:11:30,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:11:30,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:11:30,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:11:30,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:11:30,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:11:30,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:11:30,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:11:30,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:11:30,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:11:30,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:11:30,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:11:30,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:11:30,357 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:11:30,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:11:30,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:11:30,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:11:30,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:11:30,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:11:30,360 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:11:30,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:11:30,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:11:30,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:11:30,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:11:30,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:11:30,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:11:30,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:11:30,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:11:30,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:11:30,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:11:30,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:11:30,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:11:30,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:11:30,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:11:30,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:11:30,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:11:30,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:11:30,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:11:30,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:11:30,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:11:30,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:11:30,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:11:30,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 [2021-11-06 15:11:30,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:11:30,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:11:30,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:11:30,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:11:30,559 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:11:30,560 INFO L432 ainManager$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 [2021-11-06 15:11:30,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa09f3c2/4357185b35204bf38be2f67874ee25f9/FLAG262489ec1 [2021-11-06 15:11:31,258 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:11:31,260 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 [2021-11-06 15:11:31,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa09f3c2/4357185b35204bf38be2f67874ee25f9/FLAG262489ec1 [2021-11-06 15:11:31,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa09f3c2/4357185b35204bf38be2f67874ee25f9 [2021-11-06 15:11:31,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:11:31,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:11:31,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:11:31,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:11:31,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:11:31,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:11:31" (1/1) ... [2021-11-06 15:11:31,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae9efa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:31, skipping insertion in model container [2021-11-06 15:11:31,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:11:31" (1/1) ... [2021-11-06 15:11:31,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:11:31,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:11:31,855 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2021-11-06 15:11:31,855 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] [2021-11-06 15:11:32,165 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] [2021-11-06 15:11:32,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:11:33,027 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:11:33,102 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2021-11-06 15:11:33,103 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] [2021-11-06 15:11:33,121 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] [2021-11-06 15:11:33,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:11:33,459 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:11:33,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33 WrapperNode [2021-11-06 15:11:33,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:11:33,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:11:33,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:11:33,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:11:33,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:33,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:33,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:11:33,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:11:33,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:11:33,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:11:33,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:33,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:11:34,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:11:34,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:11:34,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:11:34,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (1/1) ... [2021-11-06 15:11:34,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:11:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:11:34,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:11:34,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:11:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-06 15:11:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 15:11:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:11:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:11:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:11:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 15:11:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:11:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:11:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:11:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:11:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:12:05,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:12:05,025 INFO L299 CfgBuilder]: Removed 1965 assume(true) statements. [2021-11-06 15:12:05,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:12:05 BoogieIcfgContainer [2021-11-06 15:12:05,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:12:05,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:12:05,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:12:05,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:12:05,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:11:31" (1/3) ... [2021-11-06 15:12:05,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31089cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:12:05, skipping insertion in model container [2021-11-06 15:12:05,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:11:33" (2/3) ... [2021-11-06 15:12:05,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31089cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:12:05, skipping insertion in model container [2021-11-06 15:12:05,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:12:05" (3/3) ... [2021-11-06 15:12:05,036 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 [2021-11-06 15:12:05,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:12:05,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 15:12:05,091 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:12:05,096 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:12:05,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 15:12:05,130 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) [2021-11-06 15:12:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 15:12:05,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:05,145 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:05,145 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)] === [2021-11-06 15:12:05,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash 579665989, now seen corresponding path program 1 times [2021-11-06 15:12:05,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:05,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580334382] [2021-11-06 15:12:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:05,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:05,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:05,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580334382] [2021-11-06 15:12:05,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580334382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:05,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:05,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:05,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011199438] [2021-11-06 15:12:05,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:05,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:06,006 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) [2021-11-06 15:12:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:06,474 INFO L93 Difference]: Finished difference Result 5444 states and 7518 transitions. [2021-11-06 15:12:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:06,476 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 [2021-11-06 15:12:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:06,502 INFO L225 Difference]: With dead ends: 5444 [2021-11-06 15:12:06,502 INFO L226 Difference]: Without dead ends: 3494 [2021-11-06 15:12:06,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-11-06 15:12:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3460. [2021-11-06 15:12:06,645 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) [2021-11-06 15:12:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4651 transitions. [2021-11-06 15:12:06,656 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4651 transitions. Word has length 52 [2021-11-06 15:12:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:06,657 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 4651 transitions. [2021-11-06 15:12:06,658 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) [2021-11-06 15:12:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4651 transitions. [2021-11-06 15:12:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 15:12:06,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:06,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:06,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:12:06,668 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)] === [2021-11-06 15:12:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:06,672 INFO L85 PathProgramCache]: Analyzing trace with hash -867049352, now seen corresponding path program 1 times [2021-11-06 15:12:06,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:06,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824690720] [2021-11-06 15:12:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:06,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:07,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:07,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824690720] [2021-11-06 15:12:07,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824690720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:07,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:07,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:07,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188161192] [2021-11-06 15:12:07,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:07,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:07,060 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) [2021-11-06 15:12:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:07,382 INFO L93 Difference]: Finished difference Result 8650 states and 11791 transitions. [2021-11-06 15:12:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:07,383 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 [2021-11-06 15:12:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:07,402 INFO L225 Difference]: With dead ends: 8650 [2021-11-06 15:12:07,402 INFO L226 Difference]: Without dead ends: 5321 [2021-11-06 15:12:07,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2021-11-06 15:12:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5309. [2021-11-06 15:12:07,508 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) [2021-11-06 15:12:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 7277 transitions. [2021-11-06 15:12:07,526 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 7277 transitions. Word has length 56 [2021-11-06 15:12:07,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:07,527 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 7277 transitions. [2021-11-06 15:12:07,527 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) [2021-11-06 15:12:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 7277 transitions. [2021-11-06 15:12:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 15:12:07,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:07,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:07,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:12:07,530 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)] === [2021-11-06 15:12:07,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash -342745774, now seen corresponding path program 1 times [2021-11-06 15:12:07,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:07,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693710319] [2021-11-06 15:12:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:07,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:07,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:07,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693710319] [2021-11-06 15:12:07,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693710319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:07,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:07,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:07,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470544452] [2021-11-06 15:12:07,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:07,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:07,886 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) [2021-11-06 15:12:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:08,615 INFO L93 Difference]: Finished difference Result 12569 states and 17114 transitions. [2021-11-06 15:12:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:08,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-06 15:12:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:08,641 INFO L225 Difference]: With dead ends: 12569 [2021-11-06 15:12:08,641 INFO L226 Difference]: Without dead ends: 7391 [2021-11-06 15:12:08,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2021-11-06 15:12:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 7339. [2021-11-06 15:12:08,886 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) [2021-11-06 15:12:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7339 states to 7339 states and 9941 transitions. [2021-11-06 15:12:08,906 INFO L78 Accepts]: Start accepts. Automaton has 7339 states and 9941 transitions. Word has length 57 [2021-11-06 15:12:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:08,908 INFO L470 AbstractCegarLoop]: Abstraction has 7339 states and 9941 transitions. [2021-11-06 15:12:08,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:12:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 7339 states and 9941 transitions. [2021-11-06 15:12:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 15:12:08,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:08,912 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:08,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:12:08,912 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)] === [2021-11-06 15:12:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1504564892, now seen corresponding path program 1 times [2021-11-06 15:12:08,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:08,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102209472] [2021-11-06 15:12:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:08,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:09,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:09,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102209472] [2021-11-06 15:12:09,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102209472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:09,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:09,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:12:09,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284154689] [2021-11-06 15:12:09,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:12:09,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:12:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:12:09,258 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) [2021-11-06 15:12:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:11,708 INFO L93 Difference]: Finished difference Result 14571 states and 19768 transitions. [2021-11-06 15:12:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:12:11,709 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 [2021-11-06 15:12:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:11,734 INFO L225 Difference]: With dead ends: 14571 [2021-11-06 15:12:11,734 INFO L226 Difference]: Without dead ends: 7339 [2021-11-06 15:12:11,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:12:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2021-11-06 15:12:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 7339. [2021-11-06 15:12:11,901 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) [2021-11-06 15:12:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7339 states to 7339 states and 9933 transitions. [2021-11-06 15:12:11,923 INFO L78 Accepts]: Start accepts. Automaton has 7339 states and 9933 transitions. Word has length 80 [2021-11-06 15:12:11,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:11,924 INFO L470 AbstractCegarLoop]: Abstraction has 7339 states and 9933 transitions. [2021-11-06 15:12:11,925 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) [2021-11-06 15:12:11,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7339 states and 9933 transitions. [2021-11-06 15:12:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 15:12:11,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:11,929 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:11,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:12:11,929 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)] === [2021-11-06 15:12:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash 216425290, now seen corresponding path program 1 times [2021-11-06 15:12:11,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:11,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855949488] [2021-11-06 15:12:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:11,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:12:12,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:12,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855949488] [2021-11-06 15:12:12,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855949488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:12,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:12,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:12:12,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226173624] [2021-11-06 15:12:12,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:12,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:12,263 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) [2021-11-06 15:12:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:12,594 INFO L93 Difference]: Finished difference Result 7339 states and 9933 transitions. [2021-11-06 15:12:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:12,595 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 [2021-11-06 15:12:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:12,617 INFO L225 Difference]: With dead ends: 7339 [2021-11-06 15:12:12,617 INFO L226 Difference]: Without dead ends: 7315 [2021-11-06 15:12:12,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2021-11-06 15:12:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 7315. [2021-11-06 15:12:12,821 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) [2021-11-06 15:12:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 9873 transitions. [2021-11-06 15:12:12,834 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 9873 transitions. Word has length 84 [2021-11-06 15:12:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:12,835 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 9873 transitions. [2021-11-06 15:12:12,835 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) [2021-11-06 15:12:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 9873 transitions. [2021-11-06 15:12:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 15:12:12,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:12,838 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:12,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:12:12,839 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)] === [2021-11-06 15:12:12,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1570070938, now seen corresponding path program 1 times [2021-11-06 15:12:12,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:12,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867599375] [2021-11-06 15:12:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:12,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:13,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:13,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867599375] [2021-11-06 15:12:13,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867599375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:13,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:13,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:12:13,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80829612] [2021-11-06 15:12:13,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:12:13,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:12:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:12:13,177 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) [2021-11-06 15:12:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:13,643 INFO L93 Difference]: Finished difference Result 21437 states and 29042 transitions. [2021-11-06 15:12:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:12:13,644 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 [2021-11-06 15:12:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:13,678 INFO L225 Difference]: With dead ends: 21437 [2021-11-06 15:12:13,678 INFO L226 Difference]: Without dead ends: 14253 [2021-11-06 15:12:13,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:12:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2021-11-06 15:12:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 7317. [2021-11-06 15:12:13,929 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) [2021-11-06 15:12:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 9875 transitions. [2021-11-06 15:12:13,943 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 9875 transitions. Word has length 85 [2021-11-06 15:12:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:13,944 INFO L470 AbstractCegarLoop]: Abstraction has 7317 states and 9875 transitions. [2021-11-06 15:12:13,944 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) [2021-11-06 15:12:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 9875 transitions. [2021-11-06 15:12:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 15:12:13,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:13,953 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:13,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:12:13,953 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)] === [2021-11-06 15:12:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1945784990, now seen corresponding path program 1 times [2021-11-06 15:12:13,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:13,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428855351] [2021-11-06 15:12:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:13,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:14,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:14,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428855351] [2021-11-06 15:12:14,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428855351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:14,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:14,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:14,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033323357] [2021-11-06 15:12:14,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:14,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:14,293 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) [2021-11-06 15:12:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:16,671 INFO L93 Difference]: Finished difference Result 14505 states and 19606 transitions. [2021-11-06 15:12:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:16,672 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 [2021-11-06 15:12:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:16,686 INFO L225 Difference]: With dead ends: 14505 [2021-11-06 15:12:16,687 INFO L226 Difference]: Without dead ends: 7311 [2021-11-06 15:12:16,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2021-11-06 15:12:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7144. [2021-11-06 15:12:16,867 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) [2021-11-06 15:12:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 9670 transitions. [2021-11-06 15:12:16,881 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 9670 transitions. Word has length 87 [2021-11-06 15:12:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:16,881 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 9670 transitions. [2021-11-06 15:12:16,882 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) [2021-11-06 15:12:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 9670 transitions. [2021-11-06 15:12:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 15:12:16,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:16,886 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:16,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:12:16,886 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)] === [2021-11-06 15:12:16,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1066435127, now seen corresponding path program 1 times [2021-11-06 15:12:16,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:16,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050202990] [2021-11-06 15:12:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:16,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:17,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:17,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050202990] [2021-11-06 15:12:17,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050202990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:17,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:17,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:17,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752985741] [2021-11-06 15:12:17,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:17,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:17,219 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) [2021-11-06 15:12:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:20,251 INFO L93 Difference]: Finished difference Result 16336 states and 22139 transitions. [2021-11-06 15:12:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:20,252 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 [2021-11-06 15:12:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:20,270 INFO L225 Difference]: With dead ends: 16336 [2021-11-06 15:12:20,270 INFO L226 Difference]: Without dead ends: 9323 [2021-11-06 15:12:20,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9323 states. [2021-11-06 15:12:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9323 to 9236. [2021-11-06 15:12:20,530 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) [2021-11-06 15:12:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 12412 transitions. [2021-11-06 15:12:20,547 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 12412 transitions. Word has length 89 [2021-11-06 15:12:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:20,548 INFO L470 AbstractCegarLoop]: Abstraction has 9236 states and 12412 transitions. [2021-11-06 15:12:20,548 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) [2021-11-06 15:12:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 12412 transitions. [2021-11-06 15:12:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 15:12:20,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:20,553 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:12:20,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:12:20,553 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)] === [2021-11-06 15:12:20,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1732776911, now seen corresponding path program 1 times [2021-11-06 15:12:20,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:20,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052883317] [2021-11-06 15:12:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:20,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:12:20,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:20,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052883317] [2021-11-06 15:12:20,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052883317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:20,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:20,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:20,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109401547] [2021-11-06 15:12:20,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:20,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:20,848 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) [2021-11-06 15:12:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:23,379 INFO L93 Difference]: Finished difference Result 20842 states and 28236 transitions. [2021-11-06 15:12:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:23,381 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 [2021-11-06 15:12:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:23,401 INFO L225 Difference]: With dead ends: 20842 [2021-11-06 15:12:23,402 INFO L226 Difference]: Without dead ends: 11737 [2021-11-06 15:12:23,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-11-06 15:12:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 11734. [2021-11-06 15:12:23,733 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) [2021-11-06 15:12:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 15926 transitions. [2021-11-06 15:12:23,752 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 15926 transitions. Word has length 93 [2021-11-06 15:12:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:23,753 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 15926 transitions. [2021-11-06 15:12:23,753 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) [2021-11-06 15:12:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 15926 transitions. [2021-11-06 15:12:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 15:12:23,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:23,762 INFO L513 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] [2021-11-06 15:12:23,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:12:23,762 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)] === [2021-11-06 15:12:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1961794388, now seen corresponding path program 1 times [2021-11-06 15:12:23,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:23,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029970850] [2021-11-06 15:12:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:23,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 15:12:24,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:24,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029970850] [2021-11-06 15:12:24,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029970850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:24,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:24,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:12:24,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900125194] [2021-11-06 15:12:24,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:12:24,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:12:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:12:24,418 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) [2021-11-06 15:12:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:26,887 INFO L93 Difference]: Finished difference Result 23404 states and 31797 transitions. [2021-11-06 15:12:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:12:26,888 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 [2021-11-06 15:12:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:26,910 INFO L225 Difference]: With dead ends: 23404 [2021-11-06 15:12:26,911 INFO L226 Difference]: Without dead ends: 11794 [2021-11-06 15:12:26,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:12:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2021-11-06 15:12:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 11734. [2021-11-06 15:12:27,321 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) [2021-11-06 15:12:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 15923 transitions. [2021-11-06 15:12:27,340 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 15923 transitions. Word has length 107 [2021-11-06 15:12:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:27,341 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 15923 transitions. [2021-11-06 15:12:27,341 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) [2021-11-06 15:12:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 15923 transitions. [2021-11-06 15:12:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 15:12:27,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:27,350 INFO L513 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] [2021-11-06 15:12:27,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:12:27,351 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)] === [2021-11-06 15:12:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1759970454, now seen corresponding path program 1 times [2021-11-06 15:12:27,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:27,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038544287] [2021-11-06 15:12:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:27,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 15:12:28,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:28,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038544287] [2021-11-06 15:12:28,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038544287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:28,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:28,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:12:28,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624832391] [2021-11-06 15:12:28,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:12:28,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:12:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:12:28,179 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) [2021-11-06 15:12:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:31,867 INFO L93 Difference]: Finished difference Result 34001 states and 46421 transitions. [2021-11-06 15:12:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 15:12:31,867 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 [2021-11-06 15:12:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:32,008 INFO L225 Difference]: With dead ends: 34001 [2021-11-06 15:12:32,008 INFO L226 Difference]: Without dead ends: 22371 [2021-11-06 15:12:32,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:12:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22371 states. [2021-11-06 15:12:32,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22371 to 11734. [2021-11-06 15:12:32,378 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) [2021-11-06 15:12:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 15920 transitions. [2021-11-06 15:12:32,398 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 15920 transitions. Word has length 107 [2021-11-06 15:12:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:32,399 INFO L470 AbstractCegarLoop]: Abstraction has 11734 states and 15920 transitions. [2021-11-06 15:12:32,399 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) [2021-11-06 15:12:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 15920 transitions. [2021-11-06 15:12:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 15:12:32,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:32,408 INFO L513 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] [2021-11-06 15:12:32,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:12:32,409 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)] === [2021-11-06 15:12:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -889857966, now seen corresponding path program 1 times [2021-11-06 15:12:32,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:32,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789146587] [2021-11-06 15:12:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:32,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 15:12:33,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:33,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789146587] [2021-11-06 15:12:33,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789146587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:33,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:33,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:12:33,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264158281] [2021-11-06 15:12:33,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:12:33,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:12:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:33,399 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) [2021-11-06 15:12:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:33,898 INFO L93 Difference]: Finished difference Result 23339 states and 31697 transitions. [2021-11-06 15:12:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:12:33,899 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 [2021-11-06 15:12:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:33,917 INFO L225 Difference]: With dead ends: 23339 [2021-11-06 15:12:33,917 INFO L226 Difference]: Without dead ends: 11735 [2021-11-06 15:12:33,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:12:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2021-11-06 15:12:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 11735. [2021-11-06 15:12:34,200 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) [2021-11-06 15:12:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11735 states to 11735 states and 15921 transitions. [2021-11-06 15:12:34,220 INFO L78 Accepts]: Start accepts. Automaton has 11735 states and 15921 transitions. Word has length 113 [2021-11-06 15:12:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:34,220 INFO L470 AbstractCegarLoop]: Abstraction has 11735 states and 15921 transitions. [2021-11-06 15:12:34,220 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) [2021-11-06 15:12:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 11735 states and 15921 transitions. [2021-11-06 15:12:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 15:12:34,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:34,230 INFO L513 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] [2021-11-06 15:12:34,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 15:12:34,230 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)] === [2021-11-06 15:12:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash 381175134, now seen corresponding path program 1 times [2021-11-06 15:12:34,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:34,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172078766] [2021-11-06 15:12:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:34,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 15:12:34,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:34,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172078766] [2021-11-06 15:12:34,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172078766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:12:34,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941534413] [2021-11-06 15:12:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:34,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:12:34,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:12:34,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:12:34,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:12:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:36,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 5709 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 15:12:36,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:12:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 15:12:37,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941534413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:37,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:12:37,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 15:12:37,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878523526] [2021-11-06 15:12:37,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:12:37,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:37,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:12:37,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:12:37,234 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) [2021-11-06 15:12:39,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:39,875 INFO L93 Difference]: Finished difference Result 23280 states and 31631 transitions. [2021-11-06 15:12:39,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:12:39,876 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 [2021-11-06 15:12:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:39,889 INFO L225 Difference]: With dead ends: 23280 [2021-11-06 15:12:39,889 INFO L226 Difference]: Without dead ends: 11666 [2021-11-06 15:12:39,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:12:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2021-11-06 15:12:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11632. [2021-11-06 15:12:40,165 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) [2021-11-06 15:12:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 15808 transitions. [2021-11-06 15:12:40,179 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 15808 transitions. Word has length 114 [2021-11-06 15:12:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:40,179 INFO L470 AbstractCegarLoop]: Abstraction has 11632 states and 15808 transitions. [2021-11-06 15:12:40,179 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) [2021-11-06 15:12:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 15808 transitions. [2021-11-06 15:12:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 15:12:40,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:40,185 INFO L513 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] [2021-11-06 15:12:40,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 15:12:40,399 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 [2021-11-06 15:12:40,400 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)] === [2021-11-06 15:12:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1711627223, now seen corresponding path program 1 times [2021-11-06 15:12:40,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:40,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133466034] [2021-11-06 15:12:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:40,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 15:12:40,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:40,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133466034] [2021-11-06 15:12:40,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133466034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:12:40,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:12:40,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:12:40,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435846842] [2021-11-06 15:12:40,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:12:40,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:12:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:12:40,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:12:40,803 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) [2021-11-06 15:12:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:12:43,540 INFO L93 Difference]: Finished difference Result 28170 states and 38246 transitions. [2021-11-06 15:12:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:12:43,540 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 [2021-11-06 15:12:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:12:43,561 INFO L225 Difference]: With dead ends: 28170 [2021-11-06 15:12:43,561 INFO L226 Difference]: Without dead ends: 16670 [2021-11-06 15:12:43,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:12:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16670 states. [2021-11-06 15:12:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16670 to 11644. [2021-11-06 15:12:43,831 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) [2021-11-06 15:12:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11644 states to 11644 states and 15820 transitions. [2021-11-06 15:12:43,844 INFO L78 Accepts]: Start accepts. Automaton has 11644 states and 15820 transitions. Word has length 114 [2021-11-06 15:12:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:12:43,844 INFO L470 AbstractCegarLoop]: Abstraction has 11644 states and 15820 transitions. [2021-11-06 15:12:43,845 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) [2021-11-06 15:12:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 11644 states and 15820 transitions. [2021-11-06 15:12:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 15:12:43,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:12:43,849 INFO L513 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] [2021-11-06 15:12:43,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 15:12:43,849 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)] === [2021-11-06 15:12:43,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:12:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash -677059800, now seen corresponding path program 1 times [2021-11-06 15:12:43,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:12:43,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041930689] [2021-11-06 15:12:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:43,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:12:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:12:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 15:12:44,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:12:44,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041930689] [2021-11-06 15:12:44,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041930689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:12:44,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088547683] [2021-11-06 15:12:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:12:44,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:12:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:12:44,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:12:44,617 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