/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:19:58,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:19:58,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:19:58,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:19:58,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:19:58,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:19:58,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:19:58,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:19:58,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:19:58,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:19:58,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:19:58,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:19:58,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:19:58,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:19:58,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:19:58,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:19:58,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:19:58,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:19:58,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:19:58,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:19:58,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:19:58,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:19:58,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:19:58,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:19:58,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:19:58,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:19:58,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:19:58,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:19:58,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:19:58,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:19:58,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:19:58,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:19:58,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:19:58,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:19:58,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:19:58,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:19:58,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:19:58,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:19:58,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:19:58,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:19:58,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:19:58,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:19:58,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:19:58,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:19:58,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:19:58,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:19:58,504 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:19:58,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:19:58,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:19:58,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:19:58,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:19:58,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:19:58,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:19:58,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:19:58,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:19:58,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:19:58,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:19:58,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:19:58,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:19:58,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:19:58,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:19:58,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:19:58,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:19:58,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:19:58,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:19:58,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:19:58,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:19:58,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:19:58,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:19:58,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:19:58,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:19:58,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:19:58,894 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:19:58,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2020-12-22 13:19:58,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ac80e8d/b3bda12842be41bf82fd5f06db9120d4/FLAGac16a6231 [2020-12-22 13:20:00,174 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:20:00,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2020-12-22 13:20:00,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ac80e8d/b3bda12842be41bf82fd5f06db9120d4/FLAGac16a6231 [2020-12-22 13:20:00,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ac80e8d/b3bda12842be41bf82fd5f06db9120d4 [2020-12-22 13:20:00,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:20:00,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:20:00,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:20:00,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:20:00,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:20:00,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:20:00" (1/1) ... [2020-12-22 13:20:00,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9d189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:00, skipping insertion in model container [2020-12-22 13:20:00,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:20:00" (1/1) ... [2020-12-22 13:20:00,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:20:00,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:20:02,011 WARN L226 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2020-12-22 13:20:03,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:20:03,866 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:20:04,039 WARN L226 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2020-12-22 13:20:04,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:20:04,973 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:20:04,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04 WrapperNode [2020-12-22 13:20:04,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:20:04,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:20:04,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:20:04,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:20:04,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:05,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:06,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:20:06,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:20:06,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:20:06,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:20:06,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:06,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:06,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:06,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:07,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:07,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:07,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... [2020-12-22 13:20:08,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:20:08,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:20:08,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:20:08,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:20:08,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:20:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:20:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:20:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 13:20:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:20:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:20:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:20:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2020-12-22 13:20:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2020-12-22 13:20:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:20:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:20:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:20:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:20:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:20:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2020-12-22 13:20:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2020-12-22 13:20:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:20:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2020-12-22 13:20:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2020-12-22 13:20:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2020-12-22 13:20:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:20:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:20:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:20:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:20:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:20:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:21:35,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:21:35,467 INFO L299 CfgBuilder]: Removed 6872 assume(true) statements. [2020-12-22 13:21:35,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:21:35 BoogieIcfgContainer [2020-12-22 13:21:35,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:21:35,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:21:35,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:21:35,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:21:35,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:20:00" (1/3) ... [2020-12-22 13:21:35,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:21:35, skipping insertion in model container [2020-12-22 13:21:35,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:20:04" (2/3) ... [2020-12-22 13:21:35,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dce917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:21:35, skipping insertion in model container [2020-12-22 13:21:35,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:21:35" (3/3) ... [2020-12-22 13:21:35,483 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2020-12-22 13:21:35,490 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:21:35,497 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:21:35,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:21:35,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:21:35,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:21:35,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:21:35,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:21:35,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:21:35,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:21:35,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:21:35,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:21:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states. [2020-12-22 13:21:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:21:35,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:35,660 INFO L422 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] [2020-12-22 13:21:35,660 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2021068076, now seen corresponding path program 1 times [2020-12-22 13:21:35,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:35,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913252882] [2020-12-22 13:21:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:21:36,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913252882] [2020-12-22 13:21:36,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:36,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:36,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308045479] [2020-12-22 13:21:36,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:36,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:36,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:36,693 INFO L87 Difference]: Start difference. First operand 5535 states. Second operand 3 states. [2020-12-22 13:21:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:37,160 INFO L93 Difference]: Finished difference Result 11034 states and 14566 transitions. [2020-12-22 13:21:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:21:37,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:21:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:37,212 INFO L225 Difference]: With dead ends: 11034 [2020-12-22 13:21:37,213 INFO L226 Difference]: Without dead ends: 5454 [2020-12-22 13:21:37,240 INFO L677 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 [2020-12-22 13:21:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2020-12-22 13:21:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5454. [2020-12-22 13:21:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5454 states. [2020-12-22 13:21:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 6998 transitions. [2020-12-22 13:21:37,482 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 6998 transitions. Word has length 40 [2020-12-22 13:21:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:37,483 INFO L481 AbstractCegarLoop]: Abstraction has 5454 states and 6998 transitions. [2020-12-22 13:21:37,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:21:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 6998 transitions. [2020-12-22 13:21:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:21:37,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:37,487 INFO L422 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] [2020-12-22 13:21:37,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:21:37,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash 252235888, now seen corresponding path program 1 times [2020-12-22 13:21:37,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:37,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399607923] [2020-12-22 13:21:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:21:37,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399607923] [2020-12-22 13:21:37,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:37,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:37,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595189464] [2020-12-22 13:21:37,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:37,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:37,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:37,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:37,883 INFO L87 Difference]: Start difference. First operand 5454 states and 6998 transitions. Second operand 3 states. [2020-12-22 13:21:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:40,499 INFO L93 Difference]: Finished difference Result 16024 states and 20619 transitions. [2020-12-22 13:21:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:21:40,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 13:21:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:40,574 INFO L225 Difference]: With dead ends: 16024 [2020-12-22 13:21:40,574 INFO L226 Difference]: Without dead ends: 10660 [2020-12-22 13:21:40,597 INFO L677 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 [2020-12-22 13:21:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10660 states. [2020-12-22 13:21:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10660 to 10660. [2020-12-22 13:21:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10660 states. [2020-12-22 13:21:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 13719 transitions. [2020-12-22 13:21:40,919 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 13719 transitions. Word has length 42 [2020-12-22 13:21:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:40,920 INFO L481 AbstractCegarLoop]: Abstraction has 10660 states and 13719 transitions. [2020-12-22 13:21:40,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:21:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 13719 transitions. [2020-12-22 13:21:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 13:21:40,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:40,929 INFO L422 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] [2020-12-22 13:21:40,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:21:40,930 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash -489045384, now seen corresponding path program 1 times [2020-12-22 13:21:40,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:40,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313463187] [2020-12-22 13:21:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:21:41,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313463187] [2020-12-22 13:21:41,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:41,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:21:41,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864688668] [2020-12-22 13:21:41,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:21:41,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:21:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:21:41,405 INFO L87 Difference]: Start difference. First operand 10660 states and 13719 transitions. Second operand 5 states. [2020-12-22 13:21:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:42,844 INFO L93 Difference]: Finished difference Result 31798 states and 41038 transitions. [2020-12-22 13:21:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:21:42,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 13:21:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:42,983 INFO L225 Difference]: With dead ends: 31798 [2020-12-22 13:21:42,983 INFO L226 Difference]: Without dead ends: 21223 [2020-12-22 13:21:43,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:21:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21223 states. [2020-12-22 13:21:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21223 to 21111. [2020-12-22 13:21:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21111 states. [2020-12-22 13:21:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21111 states to 21111 states and 27228 transitions. [2020-12-22 13:21:43,679 INFO L78 Accepts]: Start accepts. Automaton has 21111 states and 27228 transitions. Word has length 49 [2020-12-22 13:21:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:43,680 INFO L481 AbstractCegarLoop]: Abstraction has 21111 states and 27228 transitions. [2020-12-22 13:21:43,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:21:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 21111 states and 27228 transitions. [2020-12-22 13:21:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 13:21:43,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:43,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:21:43,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:21:43,719 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash -727681100, now seen corresponding path program 1 times [2020-12-22 13:21:43,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:43,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347486319] [2020-12-22 13:21:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-12-22 13:21:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:44,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-22 13:21:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:21:44,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347486319] [2020-12-22 13:21:44,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:44,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:21:44,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605024332] [2020-12-22 13:21:44,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:21:44,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:44,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:21:44,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:21:44,235 INFO L87 Difference]: Start difference. First operand 21111 states and 27228 transitions. Second operand 4 states. [2020-12-22 13:21:55,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:55,313 INFO L93 Difference]: Finished difference Result 56449 states and 73054 transitions. [2020-12-22 13:21:55,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:21:55,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-12-22 13:21:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:55,466 INFO L225 Difference]: With dead ends: 56449 [2020-12-22 13:21:55,466 INFO L226 Difference]: Without dead ends: 35428 [2020-12-22 13:21:55,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:21:55,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35428 states. [2020-12-22 13:21:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35428 to 35145. [2020-12-22 13:21:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35145 states. [2020-12-22 13:21:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35145 states to 35145 states and 45535 transitions. [2020-12-22 13:21:57,214 INFO L78 Accepts]: Start accepts. Automaton has 35145 states and 45535 transitions. Word has length 138 [2020-12-22 13:21:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:57,215 INFO L481 AbstractCegarLoop]: Abstraction has 35145 states and 45535 transitions. [2020-12-22 13:21:57,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:21:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 35145 states and 45535 transitions. [2020-12-22 13:21:57,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 13:21:57,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:57,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:21:57,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:21:57,253 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:57,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297397, now seen corresponding path program 1 times [2020-12-22 13:21:57,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:57,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551203468] [2020-12-22 13:21:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:57,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-12-22 13:21:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-22 13:21:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:21:57,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551203468] [2020-12-22 13:21:57,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:57,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:21:57,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171162276] [2020-12-22 13:21:57,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:21:57,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:57,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:21:57,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:21:57,910 INFO L87 Difference]: Start difference. First operand 35145 states and 45535 transitions. Second operand 4 states. [2020-12-22 13:22:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:07,147 INFO L93 Difference]: Finished difference Result 65448 states and 84843 transitions. [2020-12-22 13:22:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:22:07,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-12-22 13:22:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:07,267 INFO L225 Difference]: With dead ends: 65448 [2020-12-22 13:22:07,268 INFO L226 Difference]: Without dead ends: 30393 [2020-12-22 13:22:07,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:22:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30393 states. [2020-12-22 13:22:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30393 to 30145. [2020-12-22 13:22:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30145 states. [2020-12-22 13:22:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30145 states to 30145 states and 39051 transitions. [2020-12-22 13:22:08,553 INFO L78 Accepts]: Start accepts. Automaton has 30145 states and 39051 transitions. Word has length 137 [2020-12-22 13:22:08,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:08,554 INFO L481 AbstractCegarLoop]: Abstraction has 30145 states and 39051 transitions. [2020-12-22 13:22:08,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:22:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 30145 states and 39051 transitions. [2020-12-22 13:22:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 13:22:08,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:08,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:08,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:22:08,582 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash 539137690, now seen corresponding path program 1 times [2020-12-22 13:22:08,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:08,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200795849] [2020-12-22 13:22:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-12-22 13:22:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 13:22:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-22 13:22:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:22:09,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200795849] [2020-12-22 13:22:09,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:09,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:22:09,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595782092] [2020-12-22 13:22:09,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:22:09,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:09,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:22:09,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:22:09,034 INFO L87 Difference]: Start difference. First operand 30145 states and 39051 transitions. Second operand 5 states. [2020-12-22 13:22:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:20,709 INFO L93 Difference]: Finished difference Result 90439 states and 117517 transitions. [2020-12-22 13:22:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:22:20,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-12-22 13:22:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:20,928 INFO L225 Difference]: With dead ends: 90439 [2020-12-22 13:22:20,928 INFO L226 Difference]: Without dead ends: 60384 [2020-12-22 13:22:21,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:22:21,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60384 states. [2020-12-22 13:22:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60384 to 59321. [2020-12-22 13:22:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59321 states. [2020-12-22 13:22:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59321 states to 59321 states and 76873 transitions. [2020-12-22 13:22:23,188 INFO L78 Accepts]: Start accepts. Automaton has 59321 states and 76873 transitions. Word has length 124 [2020-12-22 13:22:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:23,189 INFO L481 AbstractCegarLoop]: Abstraction has 59321 states and 76873 transitions. [2020-12-22 13:22:23,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:22:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 59321 states and 76873 transitions. [2020-12-22 13:22:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 13:22:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:23,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:23,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:22:23,214 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1037951715, now seen corresponding path program 1 times [2020-12-22 13:22:23,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:23,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421009814] [2020-12-22 13:22:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:22:23,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421009814] [2020-12-22 13:22:23,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:23,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:22:23,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180708090] [2020-12-22 13:22:23,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:22:23,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:23,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:22:23,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:23,496 INFO L87 Difference]: Start difference. First operand 59321 states and 76873 transitions. Second operand 3 states. [2020-12-22 13:22:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:26,490 INFO L93 Difference]: Finished difference Result 171639 states and 221955 transitions. [2020-12-22 13:22:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:22:26,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-12-22 13:22:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:27,052 INFO L225 Difference]: With dead ends: 171639 [2020-12-22 13:22:27,053 INFO L226 Difference]: Without dead ends: 112408 [2020-12-22 13:22:27,218 INFO L677 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 [2020-12-22 13:22:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112408 states. [2020-12-22 13:22:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112408 to 111961. [2020-12-22 13:22:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111961 states. [2020-12-22 13:22:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111961 states to 111961 states and 144677 transitions. [2020-12-22 13:22:31,382 INFO L78 Accepts]: Start accepts. Automaton has 111961 states and 144677 transitions. Word has length 123 [2020-12-22 13:22:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:31,382 INFO L481 AbstractCegarLoop]: Abstraction has 111961 states and 144677 transitions. [2020-12-22 13:22:31,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:22:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 111961 states and 144677 transitions. [2020-12-22 13:22:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-22 13:22:31,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:31,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:31,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:22:31,439 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:31,440 INFO L82 PathProgramCache]: Analyzing trace with hash -363022846, now seen corresponding path program 1 times [2020-12-22 13:22:31,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:31,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470848749] [2020-12-22 13:22:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-12-22 13:22:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 13:22:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-12-22 13:22:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:22:32,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470848749] [2020-12-22 13:22:32,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:32,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:22:32,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028305616] [2020-12-22 13:22:32,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:22:32,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:32,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:22:32,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:22:32,284 INFO L87 Difference]: Start difference. First operand 111961 states and 144677 transitions. Second operand 5 states. [2020-12-22 13:22:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:47,504 INFO L93 Difference]: Finished difference Result 233432 states and 301725 transitions. [2020-12-22 13:22:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:22:47,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-12-22 13:22:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:47,929 INFO L225 Difference]: With dead ends: 233432 [2020-12-22 13:22:47,929 INFO L226 Difference]: Without dead ends: 121561 [2020-12-22 13:22:48,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:22:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121561 states. [2020-12-22 13:22:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121561 to 112185. [2020-12-22 13:22:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112185 states. [2020-12-22 13:22:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112185 states to 112185 states and 144933 transitions. [2020-12-22 13:22:52,146 INFO L78 Accepts]: Start accepts. Automaton has 112185 states and 144933 transitions. Word has length 177 [2020-12-22 13:22:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:52,147 INFO L481 AbstractCegarLoop]: Abstraction has 112185 states and 144933 transitions. [2020-12-22 13:22:52,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:22:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 112185 states and 144933 transitions. [2020-12-22 13:22:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-22 13:22:52,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:52,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:52,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:22:52,198 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1613206945, now seen corresponding path program 1 times [2020-12-22 13:22:52,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:52,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738051039] [2020-12-22 13:22:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-12-22 13:22:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-12-22 13:22:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-12-22 13:22:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:22:53,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738051039] [2020-12-22 13:22:53,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837102793] [2020-12-22 13:22:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:22:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:55,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 5308 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:22:55,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:22:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:22:55,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:22:55,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 11 [2020-12-22 13:22:55,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087484091] [2020-12-22 13:22:55,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 13:22:55,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:55,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 13:22:55,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:22:55,748 INFO L87 Difference]: Start difference. First operand 112185 states and 144933 transitions. Second operand 11 states. [2020-12-22 13:23:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:19,950 INFO L93 Difference]: Finished difference Result 248622 states and 321854 transitions. [2020-12-22 13:23:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 13:23:19,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-12-22 13:23:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:21,095 INFO L225 Difference]: With dead ends: 248622 [2020-12-22 13:23:21,095 INFO L226 Difference]: Without dead ends: 136523 [2020-12-22 13:23:21,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:23:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136523 states. [2020-12-22 13:23:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136523 to 133579. [2020-12-22 13:23:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133579 states. [2020-12-22 13:23:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133579 states to 133579 states and 171791 transitions. [2020-12-22 13:23:27,714 INFO L78 Accepts]: Start accepts. Automaton has 133579 states and 171791 transitions. Word has length 177 [2020-12-22 13:23:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:27,714 INFO L481 AbstractCegarLoop]: Abstraction has 133579 states and 171791 transitions. [2020-12-22 13:23:27,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 13:23:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 133579 states and 171791 transitions. [2020-12-22 13:23:27,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 13:23:27,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:27,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:23:28,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 13:23:28,018 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1188234004, now seen corresponding path program 1 times [2020-12-22 13:23:28,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:28,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657310230] [2020-12-22 13:23:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:23:28,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657310230] [2020-12-22 13:23:28,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:23:28,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:23:28,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552194667] [2020-12-22 13:23:28,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:23:28,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:23:28,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:23:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:23:28,687 INFO L87 Difference]: Start difference. First operand 133579 states and 171791 transitions. Second operand 3 states. [2020-12-22 13:23:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:33,346 INFO L93 Difference]: Finished difference Result 267082 states and 343511 transitions. [2020-12-22 13:23:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:23:33,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-22 13:23:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted.