/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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 16:57:14,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 16:57:14,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 16:57:14,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 16:57:14,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 16:57:14,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 16:57:14,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 16:57:14,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 16:57:14,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 16:57:14,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 16:57:14,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 16:57:14,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 16:57:14,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 16:57:14,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 16:57:14,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 16:57:14,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 16:57:14,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 16:57:14,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 16:57:14,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 16:57:14,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 16:57:14,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 16:57:14,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 16:57:14,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 16:57:14,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 16:57:14,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 16:57:14,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 16:57:14,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 16:57:14,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 16:57:14,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 16:57:14,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 16:57:14,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 16:57:14,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 16:57:14,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 16:57:14,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 16:57:14,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 16:57:14,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 16:57:14,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 16:57:14,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 16:57:14,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 16:57:14,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 16:57:14,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 16:57:14,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 16:57:14,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 16:57:14,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 16:57:14,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 16:57:14,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 16:57:14,524 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 16:57:14,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 16:57:14,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 16:57:14,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 16:57:14,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 16:57:14,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 16:57:14,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 16:57:14,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 16:57:14,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 16:57:14,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 16:57:14,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 16:57:14,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 16:57:14,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 16:57:14,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 16:57:14,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 16:57:14,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 16:57:14,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 16:57:14,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 16:57:14,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 16:57:14,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 16:57:14,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 16:57:14,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 16:57:14,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 16:57:14,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 16:57:14,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 16:57:14,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 16:57:14,955 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 16:57:14,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2020-12-22 16:57:15,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80232101/2318bc89a31f4bfd8d8d0b851883a08a/FLAG53649e02f [2020-12-22 16:57:16,241 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 16:57:16,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2020-12-22 16:57:16,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80232101/2318bc89a31f4bfd8d8d0b851883a08a/FLAG53649e02f [2020-12-22 16:57:16,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80232101/2318bc89a31f4bfd8d8d0b851883a08a [2020-12-22 16:57:16,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 16:57:16,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 16:57:16,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 16:57:16,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 16:57:16,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 16:57:16,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:16" (1/1) ... [2020-12-22 16:57:16,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16385ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:16, skipping insertion in model container [2020-12-22 16:57:16,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:16" (1/1) ... [2020-12-22 16:57:16,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 16:57:16,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 16:57:19,478 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2020-12-22 16:57:19,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:57:19,561 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 16:57:19,956 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2020-12-22 16:57:19,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:57:20,759 INFO L208 MainTranslator]: Completed translation [2020-12-22 16:57:20,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20 WrapperNode [2020-12-22 16:57:20,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 16:57:20,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 16:57:20,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 16:57:20,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 16:57:20,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:20,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:23,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 16:57:23,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 16:57:23,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 16:57:23,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 16:57:23,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:23,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:25,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:25,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:27,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:27,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:27,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (1/1) ... [2020-12-22 16:57:28,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 16:57:28,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 16:57:28,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 16:57:28,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 16:57:28,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (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 16:57:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 16:57:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 16:57:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 16:57:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 16:57:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 16:57:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 16:57:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 16:57:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 16:57:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 16:57:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 16:57:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 16:57:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 16:57:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 16:57:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 16:57:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 16:57:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 16:57:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 16:59:25,049 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 16:59:25,051 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2020-12-22 16:59:25,051 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2020-12-22 16:59:25,051 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2020-12-22 16:59:25,052 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 16:59:25,052 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 16:59:25,054 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2020-12-22 16:59:25,056 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 16:59:25,057 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2020-12-22 16:59:25,059 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 16:59:25,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 16:59:25,153 INFO L299 CfgBuilder]: Removed 20127 assume(true) statements. [2020-12-22 16:59:25,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:59:25 BoogieIcfgContainer [2020-12-22 16:59:25,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 16:59:25,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 16:59:25,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 16:59:25,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 16:59:25,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:57:16" (1/3) ... [2020-12-22 16:59:25,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355eba63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:59:25, skipping insertion in model container [2020-12-22 16:59:25,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:20" (2/3) ... [2020-12-22 16:59:25,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355eba63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:59:25, skipping insertion in model container [2020-12-22 16:59:25,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:59:25" (3/3) ... [2020-12-22 16:59:25,178 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2020-12-22 16:59:25,185 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 16:59:25,195 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 16:59:25,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 16:59:25,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 16:59:25,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 16:59:25,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 16:59:25,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 16:59:25,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 16:59:25,298 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 16:59:25,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 16:59:25,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 16:59:25,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15154 states. [2020-12-22 16:59:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 16:59:25,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:59:25,482 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, 1, 1] [2020-12-22 16:59:25,483 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:59:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:59:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1966860879, now seen corresponding path program 1 times [2020-12-22 16:59:25,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:59:25,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505567008] [2020-12-22 16:59:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:59:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:59:26,315 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 16:59:26,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505567008] [2020-12-22 16:59:26,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:59:26,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:59:26,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500353351] [2020-12-22 16:59:26,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:59:26,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:59:26,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:59:26,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:59:26,340 INFO L87 Difference]: Start difference. First operand 15154 states. Second operand 3 states. [2020-12-22 16:59:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:59:30,065 INFO L93 Difference]: Finished difference Result 45110 states and 56980 transitions. [2020-12-22 16:59:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:59:30,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 16:59:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:59:30,289 INFO L225 Difference]: With dead ends: 45110 [2020-12-22 16:59:30,290 INFO L226 Difference]: Without dead ends: 27803 [2020-12-22 16:59:30,343 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 16:59:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27803 states. [2020-12-22 16:59:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27803 to 27803. [2020-12-22 16:59:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27803 states. [2020-12-22 16:59:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27803 states to 27803 states and 33329 transitions. [2020-12-22 16:59:31,578 INFO L78 Accepts]: Start accepts. Automaton has 27803 states and 33329 transitions. Word has length 51 [2020-12-22 16:59:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:59:31,579 INFO L481 AbstractCegarLoop]: Abstraction has 27803 states and 33329 transitions. [2020-12-22 16:59:31,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:59:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 27803 states and 33329 transitions. [2020-12-22 16:59:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 16:59:31,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:59:31,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 16:59:31,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 16:59:31,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:59:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:59:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1327347972, now seen corresponding path program 1 times [2020-12-22 16:59:31,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:59:31,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244470360] [2020-12-22 16:59:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:59:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:59:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 16:59:32,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244470360] [2020-12-22 16:59:32,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:59:32,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:59:32,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743530838] [2020-12-22 16:59:32,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:59:32,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:59:32,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:59:32,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:59:32,036 INFO L87 Difference]: Start difference. First operand 27803 states and 33329 transitions. Second operand 3 states. [2020-12-22 16:59:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:59:35,592 INFO L93 Difference]: Finished difference Result 55504 states and 66544 transitions. [2020-12-22 16:59:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:59:35,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 16:59:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:59:35,700 INFO L225 Difference]: With dead ends: 55504 [2020-12-22 16:59:35,701 INFO L226 Difference]: Without dead ends: 41628 [2020-12-22 16:59:35,737 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 16:59:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41628 states. [2020-12-22 16:59:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41628 to 41628. [2020-12-22 16:59:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41628 states. [2020-12-22 16:59:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41628 states to 41628 states and 49909 transitions. [2020-12-22 16:59:37,058 INFO L78 Accepts]: Start accepts. Automaton has 41628 states and 49909 transitions. Word has length 76 [2020-12-22 16:59:37,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:59:37,059 INFO L481 AbstractCegarLoop]: Abstraction has 41628 states and 49909 transitions. [2020-12-22 16:59:37,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:59:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 41628 states and 49909 transitions. [2020-12-22 16:59:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 16:59:37,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:59:37,065 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 16:59:37,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 16:59:37,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:59:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:59:37,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1069182534, now seen corresponding path program 1 times [2020-12-22 16:59:37,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:59:37,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823557652] [2020-12-22 16:59:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:59:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:59:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 16:59:37,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823557652] [2020-12-22 16:59:37,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:59:37,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:59:37,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675688425] [2020-12-22 16:59:37,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:59:37,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:59:37,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:59:37,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:59:37,627 INFO L87 Difference]: Start difference. First operand 41628 states and 49909 transitions. Second operand 4 states. [2020-12-22 16:59:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:59:39,852 INFO L93 Difference]: Finished difference Result 83156 states and 99706 transitions. [2020-12-22 16:59:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 16:59:39,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-22 16:59:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:59:40,111 INFO L225 Difference]: With dead ends: 83156 [2020-12-22 16:59:40,112 INFO L226 Difference]: Without dead ends: 83152 [2020-12-22 16:59:40,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 16:59:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83152 states. [2020-12-22 16:59:42,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83152 to 83144. [2020-12-22 16:59:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83144 states. [2020-12-22 16:59:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83144 states to 83144 states and 99696 transitions. [2020-12-22 16:59:42,924 INFO L78 Accepts]: Start accepts. Automaton has 83144 states and 99696 transitions. Word has length 76 [2020-12-22 16:59:42,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:59:42,925 INFO L481 AbstractCegarLoop]: Abstraction has 83144 states and 99696 transitions. [2020-12-22 16:59:42,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:59:42,925 INFO L276 IsEmpty]: Start isEmpty. Operand 83144 states and 99696 transitions. [2020-12-22 16:59:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 16:59:42,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:59:42,933 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 16:59:42,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 16:59:42,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:59:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:59:42,934 INFO L82 PathProgramCache]: Analyzing trace with hash -987091907, now seen corresponding path program 1 times [2020-12-22 16:59:42,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:59:42,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929150587] [2020-12-22 16:59:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:59:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:59:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 16:59:43,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929150587] [2020-12-22 16:59:43,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:59:43,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:59:43,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247379668] [2020-12-22 16:59:43,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:59:43,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:59:43,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:59:43,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:59:43,451 INFO L87 Difference]: Start difference. First operand 83144 states and 99696 transitions. Second operand 4 states. [2020-12-22 16:59:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:59:45,404 INFO L93 Difference]: Finished difference Result 83144 states and 99696 transitions. [2020-12-22 16:59:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:59:45,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 16:59:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:59:45,637 INFO L225 Difference]: With dead ends: 83144 [2020-12-22 16:59:45,637 INFO L226 Difference]: Without dead ends: 83120 [2020-12-22 16:59:45,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 16:59:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83120 states. [2020-12-22 16:59:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83120 to 83120. [2020-12-22 16:59:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83120 states. [2020-12-22 16:59:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83120 states to 83120 states and 99669 transitions. [2020-12-22 16:59:48,076 INFO L78 Accepts]: Start accepts. Automaton has 83120 states and 99669 transitions. Word has length 78 [2020-12-22 16:59:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:59:48,078 INFO L481 AbstractCegarLoop]: Abstraction has 83120 states and 99669 transitions. [2020-12-22 16:59:48,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:59:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 83120 states and 99669 transitions. [2020-12-22 16:59:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-12-22 16:59:48,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:59:48,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:48,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 16:59:48,195 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:59:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:59:48,196 INFO L82 PathProgramCache]: Analyzing trace with hash -577059934, now seen corresponding path program 1 times [2020-12-22 16:59:48,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:59:48,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454236320] [2020-12-22 16:59:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:59:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:59:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 16:59:48,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454236320] [2020-12-22 16:59:48,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338190627] [2020-12-22 16:59:48,716 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 16:59:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:59:52,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 16:59:52,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 16:59:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 16:59:52,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 16:59:52,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-22 16:59:52,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309091466] [2020-12-22 16:59:52,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:59:52,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:59:52,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:59:52,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 16:59:52,578 INFO L87 Difference]: Start difference. First operand 83120 states and 99669 transitions. Second operand 3 states. [2020-12-22 16:59:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:59:57,283 INFO L93 Difference]: Finished difference Result 171898 states and 206539 transitions. [2020-12-22 16:59:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:59:57,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2020-12-22 16:59:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:59:57,486 INFO L225 Difference]: With dead ends: 171898 [2020-12-22 16:59:57,486 INFO L226 Difference]: Without dead ends: 88878 [2020-12-22 16:59:57,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 16:59:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88878 states. [2020-12-22 17:00:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88878 to 88822. [2020-12-22 17:00:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88822 states. [2020-12-22 17:00:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88822 states to 88822 states and 106760 transitions. [2020-12-22 17:00:00,978 INFO L78 Accepts]: Start accepts. Automaton has 88822 states and 106760 transitions. Word has length 223 [2020-12-22 17:00:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:00:00,978 INFO L481 AbstractCegarLoop]: Abstraction has 88822 states and 106760 transitions. [2020-12-22 17:00:00,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:00:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 88822 states and 106760 transitions. [2020-12-22 17:00:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 17:00:01,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:00:01,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:01,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 17:00:01,259 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:00:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:00:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1881725157, now seen corresponding path program 1 times [2020-12-22 17:00:01,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:00:01,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925297585] [2020-12-22 17:00:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:00:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:00:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 17:00:01,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925297585] [2020-12-22 17:00:01,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:00:01,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:00:01,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531753432] [2020-12-22 17:00:01,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:00:01,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:00:01,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:00:01,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:00:01,694 INFO L87 Difference]: Start difference. First operand 88822 states and 106760 transitions. Second operand 3 states. [2020-12-22 17:00:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:00:06,850 INFO L93 Difference]: Finished difference Result 203532 states and 244724 transitions. [2020-12-22 17:00:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:00:06,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 17:00:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:00:07,167 INFO L225 Difference]: With dead ends: 203532 [2020-12-22 17:00:07,167 INFO L226 Difference]: Without dead ends: 114374 [2020-12-22 17:00:07,349 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 17:00:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114374 states. [2020-12-22 17:00:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114374 to 113904. [2020-12-22 17:00:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113904 states. [2020-12-22 17:00:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113904 states to 113904 states and 136819 transitions. [2020-12-22 17:00:10,377 INFO L78 Accepts]: Start accepts. Automaton has 113904 states and 136819 transitions. Word has length 229 [2020-12-22 17:00:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:00:10,377 INFO L481 AbstractCegarLoop]: Abstraction has 113904 states and 136819 transitions. [2020-12-22 17:00:10,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:00:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 113904 states and 136819 transitions. [2020-12-22 17:00:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-12-22 17:00:10,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:00:10,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:10,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 17:00:10,449 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:00:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:00:10,450 INFO L82 PathProgramCache]: Analyzing trace with hash -2064617698, now seen corresponding path program 1 times [2020-12-22 17:00:10,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:00:10,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134613609] [2020-12-22 17:00:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:00:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:00:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:00:10,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134613609] [2020-12-22 17:00:10,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:00:10,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:00:10,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900578195] [2020-12-22 17:00:10,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:00:10,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:00:10,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:00:10,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:00:10,860 INFO L87 Difference]: Start difference. First operand 113904 states and 136819 transitions. Second operand 3 states. [2020-12-22 17:00:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:00:16,953 INFO L93 Difference]: Finished difference Result 282792 states and 339770 transitions. [2020-12-22 17:00:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:00:16,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-12-22 17:00:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:00:17,208 INFO L225 Difference]: With dead ends: 282792 [2020-12-22 17:00:17,208 INFO L226 Difference]: Without dead ends: 168988 [2020-12-22 17:00:17,343 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 17:00:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168988 states. [2020-12-22 17:00:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168988 to 168956. [2020-12-22 17:00:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168956 states. [2020-12-22 17:00:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168956 states to 168956 states and 202945 transitions. [2020-12-22 17:00:21,672 INFO L78 Accepts]: Start accepts. Automaton has 168956 states and 202945 transitions. Word has length 232 [2020-12-22 17:00:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:00:21,672 INFO L481 AbstractCegarLoop]: Abstraction has 168956 states and 202945 transitions. [2020-12-22 17:00:21,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:00:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 168956 states and 202945 transitions. [2020-12-22 17:00:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-12-22 17:00:21,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:00:21,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:21,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 17:00:21,747 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:00:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:00:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1671777057, now seen corresponding path program 1 times [2020-12-22 17:00:21,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:00:21,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617915821] [2020-12-22 17:00:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:00:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:00:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 17:00:22,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617915821] [2020-12-22 17:00:22,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:00:22,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:00:22,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262144843] [2020-12-22 17:00:22,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:00:22,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:00:22,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:00:22,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:00:22,078 INFO L87 Difference]: Start difference. First operand 168956 states and 202945 transitions. Second operand 3 states. [2020-12-22 17:00:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:00:29,475 INFO L93 Difference]: Finished difference Result 392864 states and 471958 transitions. [2020-12-22 17:00:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 17:00:29,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2020-12-22 17:00:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:00:29,933 INFO L225 Difference]: With dead ends: 392864 [2020-12-22 17:00:29,933 INFO L226 Difference]: Without dead ends: 223579 [2020-12-22 17:00:30,414 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 17:00:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223579 states. [2020-12-22 17:00:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223579 to 223547. [2020-12-22 17:00:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223547 states. [2020-12-22 17:00:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223547 states to 223547 states and 268486 transitions. [2020-12-22 17:00:36,490 INFO L78 Accepts]: Start accepts. Automaton has 223547 states and 268486 transitions. Word has length 259 [2020-12-22 17:00:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:00:36,491 INFO L481 AbstractCegarLoop]: Abstraction has 223547 states and 268486 transitions. [2020-12-22 17:00:36,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 17:00:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 223547 states and 268486 transitions. [2020-12-22 17:00:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-12-22 17:00:36,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:00:36,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:36,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 17:00:36,600 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:00:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:00:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash 699939809, now seen corresponding path program 1 times [2020-12-22 17:00:36,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:00:36,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097091154] [2020-12-22 17:00:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:00:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:00:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-22 17:00:37,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097091154] [2020-12-22 17:00:37,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:00:37,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:00:37,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33210698] [2020-12-22 17:00:37,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 17:00:37,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:00:37,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 17:00:37,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 17:00:37,518 INFO L87 Difference]: Start difference. First operand 223547 states and 268486 transitions. Second operand 3 states.