/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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:28:09,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:28:09,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:28:09,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:28:09,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:28:09,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:28:09,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:28:09,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:28:09,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:28:09,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:28:09,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:28:09,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:28:09,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:28:09,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:28:09,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:28:09,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:28:09,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:28:09,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:28:09,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:28:09,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:28:09,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:28:09,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:28:09,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:28:09,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:28:09,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:28:09,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:28:09,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:28:09,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:28:09,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:28:09,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:28:09,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:28:09,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:28:09,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:28:09,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:28:09,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:28:09,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:28:09,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:28:09,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:28:09,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:28:09,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:28:09,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:28:09,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:28:09,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:28:09,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:28:09,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:28:09,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:28:09,486 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:28:09,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:28:09,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:28:09,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:28:09,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:28:09,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:28:09,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:28:09,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:28:09,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:28:09,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:28:09,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:28:09,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:28:09,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:28:09,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:28:09,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:28:09,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:28:09,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:28:09,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:28:09,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:28:09,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:28:09,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:28:09,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:28:09,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:28:09,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:28:09,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:28:09,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:28:09,937 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:28:09,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2020-12-22 15:28:10,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398b9062a/aaeaada1008241e2a376dc3b45cc0eff/FLAG63b5cfe3c [2020-12-22 15:28:11,308 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:28:11,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2020-12-22 15:28:11,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398b9062a/aaeaada1008241e2a376dc3b45cc0eff/FLAG63b5cfe3c [2020-12-22 15:28:11,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398b9062a/aaeaada1008241e2a376dc3b45cc0eff [2020-12-22 15:28:11,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:28:11,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:28:11,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:28:11,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:28:11,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:28:11,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:28:11" (1/1) ... [2020-12-22 15:28:11,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33803dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:11, skipping insertion in model container [2020-12-22 15:28:11,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:28:11" (1/1) ... [2020-12-22 15:28:11,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:28:11,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:28:15,035 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2020-12-22 15:28:15,039 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2020-12-22 15:28:15,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:28:15,211 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:28:15,783 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2020-12-22 15:28:15,784 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2020-12-22 15:28:15,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:28:16,687 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:28:16,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16 WrapperNode [2020-12-22 15:28:16,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:28:16,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:28:16,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:28:16,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:28:16,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:16,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:17,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:28:17,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:28:17,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:28:17,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:28:17,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:17,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:17,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:17,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:18,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:18,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:18,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:18,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:28:18,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:28:18,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:28:18,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:28:18,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (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 15:28:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:28:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:28:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:28:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:28:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:28:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:28:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 15:28:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:28:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:28:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:28:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:28:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 15:28:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:28:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:28:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:28:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:28:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:28:40,650 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 15:28:40,650 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 15:28:40,651 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 15:28:40,652 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 15:28:40,653 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 15:28:40,653 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 15:28:40,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:28:40,703 INFO L299 CfgBuilder]: Removed 4397 assume(true) statements. [2020-12-22 15:28:40,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:28:40 BoogieIcfgContainer [2020-12-22 15:28:40,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:28:40,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:28:40,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:28:40,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:28:40,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:28:11" (1/3) ... [2020-12-22 15:28:40,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0009da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:28:40, skipping insertion in model container [2020-12-22 15:28:40,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16" (2/3) ... [2020-12-22 15:28:40,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0009da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:28:40, skipping insertion in model container [2020-12-22 15:28:40,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:28:40" (3/3) ... [2020-12-22 15:28:40,720 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2020-12-22 15:28:40,727 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:28:40,734 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 15:28:40,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 15:28:40,819 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:28:40,819 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:28:40,819 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:28:40,819 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:28:40,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:28:40,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:28:40,820 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:28:40,820 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:28:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states. [2020-12-22 15:28:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 15:28:40,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:40,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:40,919 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:40,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1508043732, now seen corresponding path program 1 times [2020-12-22 15:28:40,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:40,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537610936] [2020-12-22 15:28:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:41,835 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 15:28:41,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537610936] [2020-12-22 15:28:41,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:41,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:41,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338229691] [2020-12-22 15:28:41,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:41,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:41,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:41,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:41,866 INFO L87 Difference]: Start difference. First operand 3863 states. Second operand 3 states. [2020-12-22 15:28:44,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:44,612 INFO L93 Difference]: Finished difference Result 10779 states and 14115 transitions. [2020-12-22 15:28:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:44,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 15:28:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:44,686 INFO L225 Difference]: With dead ends: 10779 [2020-12-22 15:28:44,686 INFO L226 Difference]: Without dead ends: 6671 [2020-12-22 15:28:44,707 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 15:28:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6671 states. [2020-12-22 15:28:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6671 to 6496. [2020-12-22 15:28:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6496 states. [2020-12-22 15:28:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 8281 transitions. [2020-12-22 15:28:45,044 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 8281 transitions. Word has length 60 [2020-12-22 15:28:45,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:45,045 INFO L481 AbstractCegarLoop]: Abstraction has 6496 states and 8281 transitions. [2020-12-22 15:28:45,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:45,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 8281 transitions. [2020-12-22 15:28:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 15:28:45,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:45,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:45,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:28:45,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:45,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:45,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1589939729, now seen corresponding path program 1 times [2020-12-22 15:28:45,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:45,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270859133] [2020-12-22 15:28:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:45,594 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 15:28:45,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270859133] [2020-12-22 15:28:45,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:45,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:45,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728404852] [2020-12-22 15:28:45,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:45,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:45,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:45,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:45,598 INFO L87 Difference]: Start difference. First operand 6496 states and 8281 transitions. Second operand 3 states. [2020-12-22 15:28:48,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:48,206 INFO L93 Difference]: Finished difference Result 15026 states and 19212 transitions. [2020-12-22 15:28:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:48,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 15:28:48,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:48,251 INFO L225 Difference]: With dead ends: 15026 [2020-12-22 15:28:48,251 INFO L226 Difference]: Without dead ends: 8598 [2020-12-22 15:28:48,268 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 15:28:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8598 states. [2020-12-22 15:28:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8598 to 8584. [2020-12-22 15:28:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8584 states. [2020-12-22 15:28:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 10964 transitions. [2020-12-22 15:28:48,544 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 10964 transitions. Word has length 67 [2020-12-22 15:28:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:48,544 INFO L481 AbstractCegarLoop]: Abstraction has 8584 states and 10964 transitions. [2020-12-22 15:28:48,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 10964 transitions. [2020-12-22 15:28:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 15:28:48,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:48,549 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, 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 15:28:48,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:28:48,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:48,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1381844700, now seen corresponding path program 1 times [2020-12-22 15:28:48,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:48,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371843426] [2020-12-22 15:28:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:48,876 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 15:28:48,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371843426] [2020-12-22 15:28:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:48,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:48,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225535320] [2020-12-22 15:28:48,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:48,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:48,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:48,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:48,893 INFO L87 Difference]: Start difference. First operand 8584 states and 10964 transitions. Second operand 3 states. [2020-12-22 15:28:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:51,593 INFO L93 Difference]: Finished difference Result 23010 states and 29439 transitions. [2020-12-22 15:28:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:51,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 15:28:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:51,673 INFO L225 Difference]: With dead ends: 23010 [2020-12-22 15:28:51,673 INFO L226 Difference]: Without dead ends: 14494 [2020-12-22 15:28:51,693 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 15:28:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2020-12-22 15:28:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 14210. [2020-12-22 15:28:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14210 states. [2020-12-22 15:28:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14210 states to 14210 states and 18194 transitions. [2020-12-22 15:28:52,454 INFO L78 Accepts]: Start accepts. Automaton has 14210 states and 18194 transitions. Word has length 75 [2020-12-22 15:28:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:52,456 INFO L481 AbstractCegarLoop]: Abstraction has 14210 states and 18194 transitions. [2020-12-22 15:28:52,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 14210 states and 18194 transitions. [2020-12-22 15:28:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 15:28:52,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:52,462 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 15:28:52,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:28:52,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1681614129, now seen corresponding path program 1 times [2020-12-22 15:28:52,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:52,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785635428] [2020-12-22 15:28:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:28:52,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785635428] [2020-12-22 15:28:52,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:52,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:52,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934801641] [2020-12-22 15:28:52,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:52,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:52,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:52,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:52,882 INFO L87 Difference]: Start difference. First operand 14210 states and 18194 transitions. Second operand 3 states. [2020-12-22 15:28:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:55,791 INFO L93 Difference]: Finished difference Result 31252 states and 40105 transitions. [2020-12-22 15:28:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:55,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 15:28:55,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:55,834 INFO L225 Difference]: With dead ends: 31252 [2020-12-22 15:28:55,834 INFO L226 Difference]: Without dead ends: 17110 [2020-12-22 15:28:55,862 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 15:28:55,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17110 states. [2020-12-22 15:28:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17110 to 17088. [2020-12-22 15:28:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17088 states. [2020-12-22 15:28:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 21912 transitions. [2020-12-22 15:28:56,407 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 21912 transitions. Word has length 95 [2020-12-22 15:28:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:56,410 INFO L481 AbstractCegarLoop]: Abstraction has 17088 states and 21912 transitions. [2020-12-22 15:28:56,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 21912 transitions. [2020-12-22 15:28:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 15:28:56,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:56,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 15:28:56,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:28:56,421 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:56,422 INFO L82 PathProgramCache]: Analyzing trace with hash -507623943, now seen corresponding path program 1 times [2020-12-22 15:28:56,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:56,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640520353] [2020-12-22 15:28:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:28:56,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640520353] [2020-12-22 15:28:56,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:56,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:56,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719814656] [2020-12-22 15:28:56,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:56,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:56,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:56,788 INFO L87 Difference]: Start difference. First operand 17088 states and 21912 transitions. Second operand 3 states. [2020-12-22 15:28:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:59,459 INFO L93 Difference]: Finished difference Result 37000 states and 47525 transitions. [2020-12-22 15:28:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:59,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 15:28:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:59,698 INFO L225 Difference]: With dead ends: 37000 [2020-12-22 15:28:59,699 INFO L226 Difference]: Without dead ends: 19980 [2020-12-22 15:28:59,729 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 15:28:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19980 states. [2020-12-22 15:29:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19980 to 19958. [2020-12-22 15:29:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19958 states. [2020-12-22 15:29:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19958 states to 19958 states and 25614 transitions. [2020-12-22 15:29:00,395 INFO L78 Accepts]: Start accepts. Automaton has 19958 states and 25614 transitions. Word has length 132 [2020-12-22 15:29:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:00,397 INFO L481 AbstractCegarLoop]: Abstraction has 19958 states and 25614 transitions. [2020-12-22 15:29:00,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 19958 states and 25614 transitions. [2020-12-22 15:29:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 15:29:00,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:00,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 15:29:00,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:29:00,403 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash 864183355, now seen corresponding path program 1 times [2020-12-22 15:29:00,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:00,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598824221] [2020-12-22 15:29:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:29:00,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598824221] [2020-12-22 15:29:00,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:00,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:00,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197651195] [2020-12-22 15:29:00,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:00,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:00,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:00,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:00,750 INFO L87 Difference]: Start difference. First operand 19958 states and 25614 transitions. Second operand 3 states. [2020-12-22 15:29:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:03,647 INFO L93 Difference]: Finished difference Result 42728 states and 54905 transitions. [2020-12-22 15:29:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:03,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 15:29:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:03,701 INFO L225 Difference]: With dead ends: 42728 [2020-12-22 15:29:03,702 INFO L226 Difference]: Without dead ends: 22838 [2020-12-22 15:29:03,738 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 15:29:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22838 states. [2020-12-22 15:29:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22838 to 22816. [2020-12-22 15:29:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22816 states. [2020-12-22 15:29:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22816 states to 22816 states and 29304 transitions. [2020-12-22 15:29:04,359 INFO L78 Accepts]: Start accepts. Automaton has 22816 states and 29304 transitions. Word has length 132 [2020-12-22 15:29:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:04,360 INFO L481 AbstractCegarLoop]: Abstraction has 22816 states and 29304 transitions. [2020-12-22 15:29:04,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 22816 states and 29304 transitions. [2020-12-22 15:29:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 15:29:04,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:04,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:04,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:29:04,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:04,368 INFO L82 PathProgramCache]: Analyzing trace with hash -46491050, now seen corresponding path program 1 times [2020-12-22 15:29:04,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:04,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100956674] [2020-12-22 15:29:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 15:29:04,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100956674] [2020-12-22 15:29:04,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:04,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:04,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947366102] [2020-12-22 15:29:04,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:04,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:04,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:04,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:04,826 INFO L87 Difference]: Start difference. First operand 22816 states and 29304 transitions. Second operand 3 states. [2020-12-22 15:29:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:07,606 INFO L93 Difference]: Finished difference Result 48448 states and 62293 transitions. [2020-12-22 15:29:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:07,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-12-22 15:29:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:07,656 INFO L225 Difference]: With dead ends: 48448 [2020-12-22 15:29:07,656 INFO L226 Difference]: Without dead ends: 25700 [2020-12-22 15:29:07,684 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 15:29:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25700 states. [2020-12-22 15:29:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25700 to 25678. [2020-12-22 15:29:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25678 states. [2020-12-22 15:29:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25678 states to 25678 states and 32998 transitions. [2020-12-22 15:29:08,240 INFO L78 Accepts]: Start accepts. Automaton has 25678 states and 32998 transitions. Word has length 168 [2020-12-22 15:29:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:08,241 INFO L481 AbstractCegarLoop]: Abstraction has 25678 states and 32998 transitions. [2020-12-22 15:29:08,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 25678 states and 32998 transitions. [2020-12-22 15:29:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 15:29:08,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:08,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:08,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:29:08,247 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1418298348, now seen corresponding path program 1 times [2020-12-22 15:29:08,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:08,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071533188] [2020-12-22 15:29:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 15:29:08,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071533188] [2020-12-22 15:29:08,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:08,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:08,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627497982] [2020-12-22 15:29:08,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:08,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:08,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:08,671 INFO L87 Difference]: Start difference. First operand 25678 states and 32998 transitions. Second operand 3 states. [2020-12-22 15:29:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:11,520 INFO L93 Difference]: Finished difference Result 54176 states and 69689 transitions. [2020-12-22 15:29:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:11,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-12-22 15:29:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:11,563 INFO L225 Difference]: With dead ends: 54176 [2020-12-22 15:29:11,563 INFO L226 Difference]: Without dead ends: 28566 [2020-12-22 15:29:11,594 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 15:29:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28566 states. [2020-12-22 15:29:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28566 to 28544. [2020-12-22 15:29:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28544 states. [2020-12-22 15:29:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28544 states to 28544 states and 36696 transitions. [2020-12-22 15:29:12,094 INFO L78 Accepts]: Start accepts. Automaton has 28544 states and 36696 transitions. Word has length 168 [2020-12-22 15:29:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:12,095 INFO L481 AbstractCegarLoop]: Abstraction has 28544 states and 36696 transitions. [2020-12-22 15:29:12,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 28544 states and 36696 transitions. [2020-12-22 15:29:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-12-22 15:29:12,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:12,101 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 15:29:12,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:29:12,101 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1501729667, now seen corresponding path program 1 times [2020-12-22 15:29:12,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:12,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034064430] [2020-12-22 15:29:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 15:29:12,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034064430] [2020-12-22 15:29:12,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:12,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:12,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700623957] [2020-12-22 15:29:12,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:12,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:12,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:12,599 INFO L87 Difference]: Start difference. First operand 28544 states and 36696 transitions. Second operand 3 states. [2020-12-22 15:29:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:13,430 INFO L93 Difference]: Finished difference Result 57092 states and 73424 transitions. [2020-12-22 15:29:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:13,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-12-22 15:29:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:13,477 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:13,477 INFO L226 Difference]: Without dead ends: 28616 [2020-12-22 15:29:13,514 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 15:29:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-12-22 15:29:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 28580. [2020-12-22 15:29:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36732 transitions. [2020-12-22 15:29:14,306 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36732 transitions. Word has length 195 [2020-12-22 15:29:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:14,306 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36732 transitions. [2020-12-22 15:29:14,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36732 transitions. [2020-12-22 15:29:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 15:29:14,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:14,315 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:14,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:29:14,316 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash -25965181, now seen corresponding path program 1 times [2020-12-22 15:29:14,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:14,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216588539] [2020-12-22 15:29:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216588539] [2020-12-22 15:29:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197325676] [2020-12-22 15:29:14,907 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 15:29:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:17,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:17,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:17,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:17,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:29:17,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428823651] [2020-12-22 15:29:17,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:17,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:17,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:17,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:17,399 INFO L87 Difference]: Start difference. First operand 28580 states and 36732 transitions. Second operand 3 states. [2020-12-22 15:29:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:18,080 INFO L93 Difference]: Finished difference Result 57092 states and 73388 transitions. [2020-12-22 15:29:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:18,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-12-22 15:29:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:18,115 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:18,115 INFO L226 Difference]: Without dead ends: 28580 [2020-12-22 15:29:18,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-12-22 15:29:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2020-12-22 15:29:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36670 transitions. [2020-12-22 15:29:18,789 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36670 transitions. Word has length 199 [2020-12-22 15:29:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:18,789 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36670 transitions. [2020-12-22 15:29:18,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36670 transitions. [2020-12-22 15:29:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-12-22 15:29:18,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:18,796 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:19,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 15:29:19,011 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:19,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:19,012 INFO L82 PathProgramCache]: Analyzing trace with hash -804680180, now seen corresponding path program 1 times [2020-12-22 15:29:19,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:19,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470026529] [2020-12-22 15:29:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:19,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470026529] [2020-12-22 15:29:19,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999177749] [2020-12-22 15:29:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:21,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 3513 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:21,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:21,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:21,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:29:21,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168786695] [2020-12-22 15:29:21,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:21,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:21,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:21,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:21,953 INFO L87 Difference]: Start difference. First operand 28580 states and 36670 transitions. Second operand 3 states. [2020-12-22 15:29:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:22,648 INFO L93 Difference]: Finished difference Result 57092 states and 73264 transitions. [2020-12-22 15:29:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:22,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-12-22 15:29:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:22,688 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:22,688 INFO L226 Difference]: Without dead ends: 28580 [2020-12-22 15:29:22,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-12-22 15:29:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2020-12-22 15:29:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36608 transitions. [2020-12-22 15:29:23,586 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36608 transitions. Word has length 200 [2020-12-22 15:29:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:23,587 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36608 transitions. [2020-12-22 15:29:23,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36608 transitions. [2020-12-22 15:29:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 15:29:23,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:23,592 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:23,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:23,806 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash 825107582, now seen corresponding path program 1 times [2020-12-22 15:29:23,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:23,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539018976] [2020-12-22 15:29:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:24,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539018976] [2020-12-22 15:29:24,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78229068] [2020-12-22 15:29:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:26,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:26,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:26,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:26,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:29:26,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005865383] [2020-12-22 15:29:26,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:26,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:26,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:26,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:26,493 INFO L87 Difference]: Start difference. First operand 28580 states and 36608 transitions. Second operand 3 states. [2020-12-22 15:29:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:27,411 INFO L93 Difference]: Finished difference Result 57092 states and 73140 transitions. [2020-12-22 15:29:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:27,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-22 15:29:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:27,448 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:27,448 INFO L226 Difference]: Without dead ends: 28580 [2020-12-22 15:29:27,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-12-22 15:29:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2020-12-22 15:29:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36546 transitions. [2020-12-22 15:29:28,406 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36546 transitions. Word has length 201 [2020-12-22 15:29:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:28,406 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36546 transitions. [2020-12-22 15:29:28,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36546 transitions. [2020-12-22 15:29:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-12-22 15:29:28,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:28,410 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:28,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 15:29:28,611 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash -190930393, now seen corresponding path program 1 times [2020-12-22 15:29:28,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:28,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424104448] [2020-12-22 15:29:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:28,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424104448] [2020-12-22 15:29:28,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104338463] [2020-12-22 15:29:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:30,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:30,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:31,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:31,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:29:31,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597353549] [2020-12-22 15:29:31,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:31,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:31,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:31,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:31,239 INFO L87 Difference]: Start difference. First operand 28580 states and 36546 transitions. Second operand 3 states. [2020-12-22 15:29:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:32,042 INFO L93 Difference]: Finished difference Result 57092 states and 73016 transitions. [2020-12-22 15:29:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:32,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2020-12-22 15:29:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:32,079 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:32,079 INFO L226 Difference]: Without dead ends: 28580 [2020-12-22 15:29:32,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-12-22 15:29:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2020-12-22 15:29:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36484 transitions. [2020-12-22 15:29:33,091 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36484 transitions. Word has length 202 [2020-12-22 15:29:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:33,092 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36484 transitions. [2020-12-22 15:29:33,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36484 transitions. [2020-12-22 15:29:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 15:29:33,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:33,098 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:33,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:33,299 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1623187591, now seen corresponding path program 1 times [2020-12-22 15:29:33,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:33,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406998116] [2020-12-22 15:29:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:33,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406998116] [2020-12-22 15:29:33,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736976291] [2020-12-22 15:29:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:35,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 3516 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:35,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:36,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:36,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:29:36,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108089525] [2020-12-22 15:29:36,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:36,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:36,076 INFO L87 Difference]: Start difference. First operand 28580 states and 36484 transitions. Second operand 3 states. [2020-12-22 15:29:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:37,041 INFO L93 Difference]: Finished difference Result 57092 states and 72892 transitions. [2020-12-22 15:29:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:37,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-12-22 15:29:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:37,076 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:37,076 INFO L226 Difference]: Without dead ends: 28580 [2020-12-22 15:29:37,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-12-22 15:29:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2020-12-22 15:29:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36422 transitions. [2020-12-22 15:29:37,951 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36422 transitions. Word has length 203 [2020-12-22 15:29:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:37,952 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36422 transitions. [2020-12-22 15:29:37,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36422 transitions. [2020-12-22 15:29:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 15:29:37,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:37,958 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:38,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 15:29:38,174 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1221628482, now seen corresponding path program 1 times [2020-12-22 15:29:38,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:38,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254620819] [2020-12-22 15:29:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:38,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254620819] [2020-12-22 15:29:38,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332178663] [2020-12-22 15:29:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:40,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 3517 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:40,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:41,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:41,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:29:41,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961011810] [2020-12-22 15:29:41,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:41,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:41,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:41,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:41,054 INFO L87 Difference]: Start difference. First operand 28580 states and 36422 transitions. Second operand 3 states. [2020-12-22 15:29:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:42,125 INFO L93 Difference]: Finished difference Result 57092 states and 72768 transitions. [2020-12-22 15:29:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:42,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-22 15:29:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:42,158 INFO L225 Difference]: With dead ends: 57092 [2020-12-22 15:29:42,158 INFO L226 Difference]: Without dead ends: 28580 [2020-12-22 15:29:42,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-12-22 15:29:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2020-12-22 15:29:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28580 states. [2020-12-22 15:29:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36360 transitions. [2020-12-22 15:29:43,087 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36360 transitions. Word has length 204 [2020-12-22 15:29:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:43,088 INFO L481 AbstractCegarLoop]: Abstraction has 28580 states and 36360 transitions. [2020-12-22 15:29:43,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36360 transitions. [2020-12-22 15:29:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-22 15:29:43,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:43,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:43,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:43,293 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash -783237516, now seen corresponding path program 1 times [2020-12-22 15:29:43,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:43,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467665840] [2020-12-22 15:29:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-22 15:29:43,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467665840] [2020-12-22 15:29:43,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700581286] [2020-12-22 15:29:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:29:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:45,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:29:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:29:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-22 15:29:46,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:29:46,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:29:46,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629094599] [2020-12-22 15:29:46,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:46,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:46,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:46,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:46,017 INFO L87 Difference]: Start difference. First operand 28580 states and 36360 transitions. Second operand 3 states. [2020-12-22 15:29:47,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:47,664 INFO L93 Difference]: Finished difference Result 58132 states and 73996 transitions. [2020-12-22 15:29:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:47,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-22 15:29:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:47,708 INFO L225 Difference]: With dead ends: 58132 [2020-12-22 15:29:47,708 INFO L226 Difference]: Without dead ends: 29620 [2020-12-22 15:29:47,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29620 states. [2020-12-22 15:29:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29620 to 28632. [2020-12-22 15:29:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28632 states. [2020-12-22 15:29:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28632 states to 28632 states and 36412 transitions. [2020-12-22 15:29:48,829 INFO L78 Accepts]: Start accepts. Automaton has 28632 states and 36412 transitions. Word has length 205 [2020-12-22 15:29:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:48,830 INFO L481 AbstractCegarLoop]: Abstraction has 28632 states and 36412 transitions. [2020-12-22 15:29:48,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 28632 states and 36412 transitions. [2020-12-22 15:29:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-12-22 15:29:48,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:48,835 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:49,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 15:29:49,037 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash 222121146, now seen corresponding path program 1 times [2020-12-22 15:29:49,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:49,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686371309] [2020-12-22 15:29:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 15:29:49,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686371309] [2020-12-22 15:29:49,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:49,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:29:49,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135053643] [2020-12-22 15:29:49,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:29:49,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:49,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:29:49,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:29:49,376 INFO L87 Difference]: Start difference. First operand 28632 states and 36412 transitions. Second operand 4 states. [2020-12-22 15:29:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:54,311 INFO L93 Difference]: Finished difference Result 88532 states and 112637 transitions. [2020-12-22 15:29:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:29:54,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-12-22 15:29:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:54,387 INFO L225 Difference]: With dead ends: 88532 [2020-12-22 15:29:54,387 INFO L226 Difference]: Without dead ends: 59968 [2020-12-22 15:29:54,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:29:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59968 states. [2020-12-22 15:29:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59968 to 31478. [2020-12-22 15:29:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31478 states. [2020-12-22 15:29:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31478 states to 31478 states and 40054 transitions. [2020-12-22 15:29:55,984 INFO L78 Accepts]: Start accepts. Automaton has 31478 states and 40054 transitions. Word has length 210 [2020-12-22 15:29:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:55,984 INFO L481 AbstractCegarLoop]: Abstraction has 31478 states and 40054 transitions. [2020-12-22 15:29:55,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:29:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 31478 states and 40054 transitions. [2020-12-22 15:29:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 15:29:55,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:55,989 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:29:55,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 15:29:55,990 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash -129455417, now seen corresponding path program 1 times [2020-12-22 15:29:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:55,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439641233] [2020-12-22 15:29:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 15:29:56,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439641233] [2020-12-22 15:29:56,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:56,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:29:56,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169432477] [2020-12-22 15:29:56,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:29:56,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:29:56,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:29:56,320 INFO L87 Difference]: Start difference. First operand 31478 states and 40054 transitions. Second operand 4 states. [2020-12-22 15:30:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:01,430 INFO L93 Difference]: Finished difference Result 94244 states and 119961 transitions. [2020-12-22 15:30:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:30:01,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2020-12-22 15:30:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:01,506 INFO L225 Difference]: With dead ends: 94244 [2020-12-22 15:30:01,506 INFO L226 Difference]: Without dead ends: 62834 [2020-12-22 15:30:01,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:30:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62834 states. [2020-12-22 15:30:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62834 to 34344. [2020-12-22 15:30:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34344 states. [2020-12-22 15:30:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34344 states to 34344 states and 43716 transitions. [2020-12-22 15:30:03,293 INFO L78 Accepts]: Start accepts. Automaton has 34344 states and 43716 transitions. Word has length 211 [2020-12-22 15:30:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:03,294 INFO L481 AbstractCegarLoop]: Abstraction has 34344 states and 43716 transitions. [2020-12-22 15:30:03,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:30:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34344 states and 43716 transitions. [2020-12-22 15:30:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-12-22 15:30:03,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:03,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:30:03,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 15:30:03,300 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:03,300 INFO L82 PathProgramCache]: Analyzing trace with hash -506343653, now seen corresponding path program 1 times [2020-12-22 15:30:03,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:03,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458994937] [2020-12-22 15:30:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 15:30:03,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458994937] [2020-12-22 15:30:03,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:03,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:30:03,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529826439] [2020-12-22 15:30:03,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:30:03,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:03,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:30:03,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:30:03,649 INFO L87 Difference]: Start difference. First operand 34344 states and 43716 transitions. Second operand 4 states. [2020-12-22 15:30:09,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:09,152 INFO L93 Difference]: Finished difference Result 99972 states and 127289 transitions. [2020-12-22 15:30:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:30:09,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-12-22 15:30:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:09,239 INFO L225 Difference]: With dead ends: 99972 [2020-12-22 15:30:09,239 INFO L226 Difference]: Without dead ends: 65696 [2020-12-22 15:30:09,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:30:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65696 states. [2020-12-22 15:30:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65696 to 37206. [2020-12-22 15:30:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37206 states. [2020-12-22 15:30:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37206 states to 37206 states and 47374 transitions. [2020-12-22 15:30:11,443 INFO L78 Accepts]: Start accepts. Automaton has 37206 states and 47374 transitions. Word has length 212 [2020-12-22 15:30:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:11,444 INFO L481 AbstractCegarLoop]: Abstraction has 37206 states and 47374 transitions. [2020-12-22 15:30:11,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:30:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 37206 states and 47374 transitions. [2020-12-22 15:30:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 15:30:11,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:11,451 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:30:11,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 15:30:11,451 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1999778892, now seen corresponding path program 1 times [2020-12-22 15:30:11,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432928442] [2020-12-22 15:30:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-22 15:30:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432928442] [2020-12-22 15:30:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116196488] [2020-12-22 15:30:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:13,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 3545 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:30:13,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-12-22 15:30:14,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:30:14,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:30:14,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642161636] [2020-12-22 15:30:14,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:30:14,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:14,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:30:14,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:30:14,154 INFO L87 Difference]: Start difference. First operand 37206 states and 47374 transitions. Second operand 3 states. [2020-12-22 15:30:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:16,614 INFO L93 Difference]: Finished difference Result 76396 states and 97358 transitions. [2020-12-22 15:30:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:16,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-22 15:30:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:16,660 INFO L225 Difference]: With dead ends: 76396 [2020-12-22 15:30:16,661 INFO L226 Difference]: Without dead ends: 39258 [2020-12-22 15:30:16,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:30:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39258 states. [2020-12-22 15:30:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39258 to 37326. [2020-12-22 15:30:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37326 states. [2020-12-22 15:30:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37326 states to 37326 states and 47494 transitions. [2020-12-22 15:30:18,816 INFO L78 Accepts]: Start accepts. Automaton has 37326 states and 47494 transitions. Word has length 213 [2020-12-22 15:30:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:18,816 INFO L481 AbstractCegarLoop]: Abstraction has 37326 states and 47494 transitions. [2020-12-22 15:30:18,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 37326 states and 47494 transitions. [2020-12-22 15:30:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 15:30:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:18,822 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-22 15:30:19,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:19,030 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:19,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1018066352, now seen corresponding path program 1 times [2020-12-22 15:30:19,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:19,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282063391] [2020-12-22 15:30:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-12-22 15:30:19,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282063391] [2020-12-22 15:30:19,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492859743] [2020-12-22 15:30:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:21,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 3555 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:30:21,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:30:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-12-22 15:30:21,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:30:21,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 15:30:21,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659605967] [2020-12-22 15:30:21,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:30:21,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:30:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:30:21,872 INFO L87 Difference]: Start difference. First operand 37326 states and 47494 transitions. Second operand 5 states. [2020-12-22 15:30:24,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:24,154 INFO L93 Difference]: Finished difference Result 74728 states and 95104 transitions. [2020-12-22 15:30:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:30:24,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-12-22 15:30:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:24,267 INFO L225 Difference]: With dead ends: 74728 [2020-12-22 15:30:24,268 INFO L226 Difference]: Without dead ends: 37470 [2020-12-22 15:30:24,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:30:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37470 states. [2020-12-22 15:30:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37470 to 37422. [2020-12-22 15:30:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37422 states. [2020-12-22 15:30:27,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37422 states to 37422 states and 47590 transitions. [2020-12-22 15:30:27,172 INFO L78 Accepts]: Start accepts. Automaton has 37422 states and 47590 transitions. Word has length 215 [2020-12-22 15:30:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:27,173 INFO L481 AbstractCegarLoop]: Abstraction has 37422 states and 47590 transitions. [2020-12-22 15:30:27,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:30:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37422 states and 47590 transitions. [2020-12-22 15:30:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 15:30:27,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:27,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 15:30:27,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:30:27,403 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1066988112, now seen corresponding path program 2 times [2020-12-22 15:30:27,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:27,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459141836] [2020-12-22 15:30:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-12-22 15:30:27,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459141836] [2020-12-22 15:30:27,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109507226] [2020-12-22 15:30:27,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true