/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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:06:42,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:06:42,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:06:42,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:06:42,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:06:42,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:06:42,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:06:42,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:06:43,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:06:43,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:06:43,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:06:43,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:06:43,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:06:43,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:06:43,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:06:43,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:06:43,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:06:43,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:06:43,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:06:43,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:06:43,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:06:43,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:06:43,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:06:43,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:06:43,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:06:43,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:06:43,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:06:43,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:06:43,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:06:43,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:06:43,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:06:43,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:06:43,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:06:43,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:06:43,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:06:43,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:06:43,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:06:43,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:06:43,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:06:43,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:06:43,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:06:43,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:06:43,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:06:43,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:06:43,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:06:43,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:06:43,109 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:06:43,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:06:43,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:06:43,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:06:43,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:06:43,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:06:43,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:06:43,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:06:43,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:06:43,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:06:43,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:06:43,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:06:43,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:06:43,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:06:43,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:06:43,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:06:43,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:06:43,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:06:43,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:06:43,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:06:43,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:06:43,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:06:43,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:06:43,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:06:43,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:06:43,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:06:43,529 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:06:43,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2020-12-22 13:06:43,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8b5b68b/3049e8ac6f6a4919b5c24c5dc2b82e89/FLAG4a12104e5 [2020-12-22 13:06:44,720 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:06:44,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2020-12-22 13:06:44,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8b5b68b/3049e8ac6f6a4919b5c24c5dc2b82e89/FLAG4a12104e5 [2020-12-22 13:06:45,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8b5b68b/3049e8ac6f6a4919b5c24c5dc2b82e89 [2020-12-22 13:06:45,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:06:45,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:06:45,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:06:45,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:06:45,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:06:45,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:06:45" (1/1) ... [2020-12-22 13:06:45,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a632c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:45, skipping insertion in model container [2020-12-22 13:06:45,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:06:45" (1/1) ... [2020-12-22 13:06:45,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:06:45,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:06:46,475 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2020-12-22 13:06:47,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:06:47,343 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:06:47,454 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2020-12-22 13:06:47,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:06:48,127 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:06:48,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48 WrapperNode [2020-12-22 13:06:48,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:06:48,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:06:48,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:06:48,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:06:48,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:48,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:49,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:06:49,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:06:49,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:06:49,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:06:49,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:49,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:49,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:49,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:49,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:49,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:50,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... [2020-12-22 13:06:50,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:06:50,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:06:50,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:06:50,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:06:50,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:06:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:06:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:06:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:06:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:06:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:06:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:06:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:06:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 13:06:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:06:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:06:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:06:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:06:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2020-12-22 13:06:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2020-12-22 13:06:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:06:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:06:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:06:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:06:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:06:50,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:06:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2020-12-22 13:06:50,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2020-12-22 13:06:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:06:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:06:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:07:23,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:07:23,426 INFO L299 CfgBuilder]: Removed 2529 assume(true) statements. [2020-12-22 13:07:23,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:23 BoogieIcfgContainer [2020-12-22 13:07:23,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:07:23,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:07:23,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:07:23,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:07:23,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:06:45" (1/3) ... [2020-12-22 13:07:23,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60430cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:23, skipping insertion in model container [2020-12-22 13:07:23,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:48" (2/3) ... [2020-12-22 13:07:23,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60430cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:23, skipping insertion in model container [2020-12-22 13:07:23,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:23" (3/3) ... [2020-12-22 13:07:23,441 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2020-12-22 13:07:23,447 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:07:23,457 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:07:23,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:07:23,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:07:23,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:07:23,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:07:23,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:07:23,533 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:07:23,533 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:07:23,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:07:23,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:07:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states. [2020-12-22 13:07:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 13:07:23,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:23,626 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] [2020-12-22 13:07:23,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1256768685, now seen corresponding path program 1 times [2020-12-22 13:07:23,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:23,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263871717] [2020-12-22 13:07:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:24,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263871717] [2020-12-22 13:07:24,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:24,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:24,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125172952] [2020-12-22 13:07:24,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:24,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:24,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:24,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:24,538 INFO L87 Difference]: Start difference. First operand 2894 states. Second operand 3 states. [2020-12-22 13:07:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:25,099 INFO L93 Difference]: Finished difference Result 5784 states and 8225 transitions. [2020-12-22 13:07:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:25,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 13:07:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:25,146 INFO L225 Difference]: With dead ends: 5784 [2020-12-22 13:07:25,146 INFO L226 Difference]: Without dead ends: 2876 [2020-12-22 13:07:25,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-12-22 13:07:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2876. [2020-12-22 13:07:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2876 states. [2020-12-22 13:07:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4028 transitions. [2020-12-22 13:07:25,379 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4028 transitions. Word has length 71 [2020-12-22 13:07:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:25,380 INFO L481 AbstractCegarLoop]: Abstraction has 2876 states and 4028 transitions. [2020-12-22 13:07:25,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4028 transitions. [2020-12-22 13:07:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 13:07:25,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:25,384 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] [2020-12-22 13:07:25,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:07:25,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1445188346, now seen corresponding path program 1 times [2020-12-22 13:07:25,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:25,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386821319] [2020-12-22 13:07:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:07:25,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386821319] [2020-12-22 13:07:25,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:07:25,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:07:25,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432413913] [2020-12-22 13:07:25,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:07:25,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:25,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:07:25,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:25,697 INFO L87 Difference]: Start difference. First operand 2876 states and 4028 transitions. Second operand 3 states. [2020-12-22 13:07:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:28,098 INFO L93 Difference]: Finished difference Result 8284 states and 11677 transitions. [2020-12-22 13:07:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:07:28,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 13:07:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:28,133 INFO L225 Difference]: With dead ends: 8284 [2020-12-22 13:07:28,133 INFO L226 Difference]: Without dead ends: 5534 [2020-12-22 13:07:28,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:07:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2020-12-22 13:07:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5534. [2020-12-22 13:07:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5534 states. [2020-12-22 13:07:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 7797 transitions. [2020-12-22 13:07:28,346 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 7797 transitions. Word has length 72 [2020-12-22 13:07:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:28,350 INFO L481 AbstractCegarLoop]: Abstraction has 5534 states and 7797 transitions. [2020-12-22 13:07:28,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:07:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 7797 transitions. [2020-12-22 13:07:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:07:28,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:28,356 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, 1, 1, 1, 1] [2020-12-22 13:07:28,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:07:28,358 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash 28683898, now seen corresponding path program 1 times [2020-12-22 13:07:28,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:28,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808741919] [2020-12-22 13:07:28,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:28,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808741919] [2020-12-22 13:07:28,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375976720] [2020-12-22 13:07:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:07:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:31,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:07:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:07:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:32,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:07:32,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:07:32,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31471467] [2020-12-22 13:07:32,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:07:32,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:07:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:07:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:07:32,143 INFO L87 Difference]: Start difference. First operand 5534 states and 7797 transitions. Second operand 6 states. [2020-12-22 13:07:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:07:32,647 INFO L93 Difference]: Finished difference Result 10956 states and 15470 transitions. [2020-12-22 13:07:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:07:32,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-22 13:07:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:07:32,681 INFO L225 Difference]: With dead ends: 10956 [2020-12-22 13:07:32,681 INFO L226 Difference]: Without dead ends: 5547 [2020-12-22 13:07:32,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:07:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2020-12-22 13:07:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5547. [2020-12-22 13:07:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2020-12-22 13:07:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 7810 transitions. [2020-12-22 13:07:32,893 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 7810 transitions. Word has length 79 [2020-12-22 13:07:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:07:32,894 INFO L481 AbstractCegarLoop]: Abstraction has 5547 states and 7810 transitions. [2020-12-22 13:07:32,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:07:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 7810 transitions. [2020-12-22 13:07:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 13:07:32,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:07:32,897 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:07:33,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 13:07:33,111 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:07:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:07:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash -320884959, now seen corresponding path program 2 times [2020-12-22 13:07:33,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:07:33,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758882232] [2020-12-22 13:07:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:07:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:07:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:07:33,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758882232] [2020-12-22 13:07:33,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313293800] [2020-12-22 13:07:33,507 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 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 13:10:37,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:10:37,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:10:37,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:10:37,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:10:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:10:37,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:10:37,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2020-12-22 13:10:37,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716859442] [2020-12-22 13:10:37,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:10:37,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:37,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:10:37,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:10:37,791 INFO L87 Difference]: Start difference. First operand 5547 states and 7810 transitions. Second operand 3 states. [2020-12-22 13:10:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:38,393 INFO L93 Difference]: Finished difference Result 16385 states and 23191 transitions. [2020-12-22 13:10:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:10:38,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 13:10:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:38,461 INFO L225 Difference]: With dead ends: 16385 [2020-12-22 13:10:38,461 INFO L226 Difference]: Without dead ends: 10965 [2020-12-22 13:10:38,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:10:38,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2020-12-22 13:10:38,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 10953. [2020-12-22 13:10:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10953 states. [2020-12-22 13:10:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10953 states to 10953 states and 15459 transitions. [2020-12-22 13:10:38,955 INFO L78 Accepts]: Start accepts. Automaton has 10953 states and 15459 transitions. Word has length 80 [2020-12-22 13:10:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:38,956 INFO L481 AbstractCegarLoop]: Abstraction has 10953 states and 15459 transitions. [2020-12-22 13:10:38,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:10:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10953 states and 15459 transitions. [2020-12-22 13:10:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 13:10:38,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:38,958 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:10:39,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:10:39,172 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1357491264, now seen corresponding path program 1 times [2020-12-22 13:10:39,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:39,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889767542] [2020-12-22 13:10:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:10:39,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889767542] [2020-12-22 13:10:39,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353081475] [2020-12-22 13:10:39,587 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 13:10:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:42,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:10:42,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:10:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:10:42,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:10:42,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:10:42,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432125618] [2020-12-22 13:10:42,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:10:42,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:42,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:10:42,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:10:42,873 INFO L87 Difference]: Start difference. First operand 10953 states and 15459 transitions. Second operand 8 states. [2020-12-22 13:10:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:43,616 INFO L93 Difference]: Finished difference Result 21793 states and 30793 transitions. [2020-12-22 13:10:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:10:43,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-12-22 13:10:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:43,666 INFO L225 Difference]: With dead ends: 21793 [2020-12-22 13:10:43,666 INFO L226 Difference]: Without dead ends: 10966 [2020-12-22 13:10:43,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:10:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2020-12-22 13:10:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 10966. [2020-12-22 13:10:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10966 states. [2020-12-22 13:10:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 15472 transitions. [2020-12-22 13:10:44,065 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 15472 transitions. Word has length 81 [2020-12-22 13:10:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:44,065 INFO L481 AbstractCegarLoop]: Abstraction has 10966 states and 15472 transitions. [2020-12-22 13:10:44,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:10:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 15472 transitions. [2020-12-22 13:10:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 13:10:44,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:44,068 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:10:44,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:10:44,269 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:44,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:44,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2009253543, now seen corresponding path program 2 times [2020-12-22 13:10:44,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:44,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190289788] [2020-12-22 13:10:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:10:44,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190289788] [2020-12-22 13:10:44,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136351117] [2020-12-22 13:10:44,671 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 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 13:10:47,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:10:47,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:10:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:10:47,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:10:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:10:48,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:10:48,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-12-22 13:10:48,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446589677] [2020-12-22 13:10:48,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:10:48,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:48,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:10:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:10:48,008 INFO L87 Difference]: Start difference. First operand 10966 states and 15472 transitions. Second operand 4 states. [2020-12-22 13:10:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:48,801 INFO L93 Difference]: Finished difference Result 10976 states and 15482 transitions. [2020-12-22 13:10:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:10:48,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 13:10:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:48,834 INFO L225 Difference]: With dead ends: 10976 [2020-12-22 13:10:48,834 INFO L226 Difference]: Without dead ends: 10974 [2020-12-22 13:10:48,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:10:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10974 states. [2020-12-22 13:10:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10974 to 10964. [2020-12-22 13:10:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10964 states. [2020-12-22 13:10:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10964 states to 10964 states and 15470 transitions. [2020-12-22 13:10:49,235 INFO L78 Accepts]: Start accepts. Automaton has 10964 states and 15470 transitions. Word has length 82 [2020-12-22 13:10:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:49,235 INFO L481 AbstractCegarLoop]: Abstraction has 10964 states and 15470 transitions. [2020-12-22 13:10:49,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:10:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 10964 states and 15470 transitions. [2020-12-22 13:10:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 13:10:49,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:49,238 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:10:49,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:10:49,440 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2137641724, now seen corresponding path program 1 times [2020-12-22 13:10:49,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:49,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976095298] [2020-12-22 13:10:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:10:49,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976095298] [2020-12-22 13:10:49,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:49,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:10:49,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350303341] [2020-12-22 13:10:49,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:10:49,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:49,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:10:49,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:49,774 INFO L87 Difference]: Start difference. First operand 10964 states and 15470 transitions. Second operand 3 states. [2020-12-22 13:10:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:50,160 INFO L93 Difference]: Finished difference Result 10964 states and 15470 transitions. [2020-12-22 13:10:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:10:50,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 13:10:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:50,197 INFO L225 Difference]: With dead ends: 10964 [2020-12-22 13:10:50,197 INFO L226 Difference]: Without dead ends: 10962 [2020-12-22 13:10:50,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2020-12-22 13:10:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 10962. [2020-12-22 13:10:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10962 states. [2020-12-22 13:10:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 15468 transitions. [2020-12-22 13:10:50,621 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 15468 transitions. Word has length 83 [2020-12-22 13:10:50,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:50,622 INFO L481 AbstractCegarLoop]: Abstraction has 10962 states and 15468 transitions. [2020-12-22 13:10:50,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:10:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 15468 transitions. [2020-12-22 13:10:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 13:10:50,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:50,625 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:10:50,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:10:50,626 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1842376111, now seen corresponding path program 1 times [2020-12-22 13:10:50,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:50,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192197491] [2020-12-22 13:10:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:10:50,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192197491] [2020-12-22 13:10:50,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:50,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:10:50,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869474057] [2020-12-22 13:10:50,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:10:50,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:50,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:10:50,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:50,925 INFO L87 Difference]: Start difference. First operand 10962 states and 15468 transitions. Second operand 3 states. [2020-12-22 13:10:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:51,343 INFO L93 Difference]: Finished difference Result 10962 states and 15468 transitions. [2020-12-22 13:10:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:10:51,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 13:10:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:51,374 INFO L225 Difference]: With dead ends: 10962 [2020-12-22 13:10:51,374 INFO L226 Difference]: Without dead ends: 10960 [2020-12-22 13:10:51,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2020-12-22 13:10:51,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 10960. [2020-12-22 13:10:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10960 states. [2020-12-22 13:10:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10960 states to 10960 states and 15466 transitions. [2020-12-22 13:10:51,805 INFO L78 Accepts]: Start accepts. Automaton has 10960 states and 15466 transitions. Word has length 84 [2020-12-22 13:10:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:51,806 INFO L481 AbstractCegarLoop]: Abstraction has 10960 states and 15466 transitions. [2020-12-22 13:10:51,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:10:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states and 15466 transitions. [2020-12-22 13:10:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:10:51,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:51,811 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:10:51,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:10:51,811 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1279076690, now seen corresponding path program 1 times [2020-12-22 13:10:51,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:51,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682855114] [2020-12-22 13:10:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:10:52,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682855114] [2020-12-22 13:10:52,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:52,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:10:52,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695883640] [2020-12-22 13:10:52,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:10:52,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:52,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:10:52,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:52,097 INFO L87 Difference]: Start difference. First operand 10960 states and 15466 transitions. Second operand 3 states. [2020-12-22 13:10:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:52,536 INFO L93 Difference]: Finished difference Result 10960 states and 15466 transitions. [2020-12-22 13:10:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:10:52,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 13:10:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:10:52,562 INFO L225 Difference]: With dead ends: 10960 [2020-12-22 13:10:52,563 INFO L226 Difference]: Without dead ends: 10951 [2020-12-22 13:10:52,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10951 states. [2020-12-22 13:10:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10951 to 10951. [2020-12-22 13:10:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10951 states. [2020-12-22 13:10:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10951 states to 10951 states and 15454 transitions. [2020-12-22 13:10:52,977 INFO L78 Accepts]: Start accepts. Automaton has 10951 states and 15454 transitions. Word has length 85 [2020-12-22 13:10:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:10:52,977 INFO L481 AbstractCegarLoop]: Abstraction has 10951 states and 15454 transitions. [2020-12-22 13:10:52,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:10:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 10951 states and 15454 transitions. [2020-12-22 13:10:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:10:52,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:10:52,993 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:10:52,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:10:52,993 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:10:52,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:10:52,994 INFO L82 PathProgramCache]: Analyzing trace with hash -479264530, now seen corresponding path program 1 times [2020-12-22 13:10:52,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:10:52,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227365805] [2020-12-22 13:10:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:10:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:10:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:10:53,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227365805] [2020-12-22 13:10:53,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:10:53,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:10:53,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123917339] [2020-12-22 13:10:53,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:10:53,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:10:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:10:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:10:53,286 INFO L87 Difference]: Start difference. First operand 10951 states and 15454 transitions. Second operand 3 states. [2020-12-22 13:10:54,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:10:54,232 INFO L93 Difference]: Finished difference Result 28548 states and 40573 transitions. [2020-12-22 13:10:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:10:54,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 13:10:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted.