/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-irda-via-ircc.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:32:19,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:32:19,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:32:19,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:32:19,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:32:19,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:32:19,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:32:19,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:32:19,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:32:19,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:32:19,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:32:19,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:32:19,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:32:19,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:32:19,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:32:19,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:32:19,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:32:19,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:32:19,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:32:19,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:32:19,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:32:19,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:32:19,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:32:19,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:32:19,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 15:32:19,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:32:19,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:32:19,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:32:19,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:32:19,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:32:19,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:32:19,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:32:19,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:32:19,880 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:32:19,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:32:19,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:32:19,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:32:19,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:32:19,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:32:19,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:32:19,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:32:19,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:32:19,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:32:19,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:32:19,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:32:19,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:32:19,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:32:19,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:32:19,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:32:19,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:32:19,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:32:19,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:32:19,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:32:19,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:32:19,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:32:20,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:32:20,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:32:20,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:32:20,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:32:20,305 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:32:20,306 INFO L432 ainManager$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-irda-via-ircc.cil.i [2020-12-22 15:32:20,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74cba04c/f51b37d613404f46b0d02ff594fe0c7f/FLAG5cd0202fb [2020-12-22 15:32:21,628 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:32:21,629 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-irda-via-ircc.cil.i [2020-12-22 15:32:21,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74cba04c/f51b37d613404f46b0d02ff594fe0c7f/FLAG5cd0202fb [2020-12-22 15:32:22,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74cba04c/f51b37d613404f46b0d02ff594fe0c7f [2020-12-22 15:32:22,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:32:22,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:32:22,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:32:22,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:32:22,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:32:22,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:32:22" (1/1) ... [2020-12-22 15:32:22,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f400632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:22, skipping insertion in model container [2020-12-22 15:32:22,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:32:22" (1/1) ... [2020-12-22 15:32:22,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:32:22,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:32:25,223 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-irda-via-ircc.cil.i[328445,328458] [2020-12-22 15:32:25,227 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-irda-via-ircc.cil.i[328590,328603] [2020-12-22 15:32:25,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:32:25,287 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:32:25,841 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-irda-via-ircc.cil.i[328445,328458] [2020-12-22 15:32:25,842 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-irda-via-ircc.cil.i[328590,328603] [2020-12-22 15:32:25,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:32:26,632 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:32:26,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26 WrapperNode [2020-12-22 15:32:26,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:32:26,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:32:26,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:32:26,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:32:26,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:26,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:34,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:32:34,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:32:34,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:32:34,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:32:34,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:34,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:35,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:35,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:37,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:37,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:38,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (1/1) ... [2020-12-22 15:32:39,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:32:39,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:32:39,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:32:39,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:32:39,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (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 15:32:39,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:32:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:32:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:32:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:32:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:32:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:32:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:32:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:32:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:32:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:32:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:32:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:32:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:32:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:32:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:34:34,226 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2020-12-22 15:34:34,226 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 15:34:34,227 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 15:34:34,231 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 15:34:34,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:34:34,431 INFO L299 CfgBuilder]: Removed 28753 assume(true) statements. [2020-12-22 15:34:34,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:34 BoogieIcfgContainer [2020-12-22 15:34:34,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:34:34,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:34:34,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:34:34,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:34:34,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:32:22" (1/3) ... [2020-12-22 15:34:34,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c96e048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:34, skipping insertion in model container [2020-12-22 15:34:34,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:32:26" (2/3) ... [2020-12-22 15:34:34,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c96e048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:34:34, skipping insertion in model container [2020-12-22 15:34:34,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:34:34" (3/3) ... [2020-12-22 15:34:34,467 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2020-12-22 15:34:34,474 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:34:34,487 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 15:34:34,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 15:34:34,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:34:34,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:34:34,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:34:34,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:34:34,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:34:34,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:34:34,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:34:34,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:34:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 22035 states. [2020-12-22 15:34:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 15:34:34,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:34:34,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:34:34,929 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 15:34:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:34:34,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1484303944, now seen corresponding path program 1 times [2020-12-22 15:34:34,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:34:34,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572049482] [2020-12-22 15:34:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:34:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:34:35,964 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 15:34:35,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572049482] [2020-12-22 15:34:35,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:34:35,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:34:35,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910238305] [2020-12-22 15:34:35,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:34:35,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:34:36,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:34:36,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:34:36,006 INFO L87 Difference]: Start difference. First operand 22035 states. Second operand 3 states. [2020-12-22 15:34:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:34:40,493 INFO L93 Difference]: Finished difference Result 54006 states and 73816 transitions. [2020-12-22 15:34:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:34:40,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 15:34:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:34:40,719 INFO L225 Difference]: With dead ends: 54006 [2020-12-22 15:34:40,719 INFO L226 Difference]: Without dead ends: 31727 [2020-12-22 15:34:40,784 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 15:34:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31727 states. [2020-12-22 15:34:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31727 to 31435. [2020-12-22 15:34:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31435 states. [2020-12-22 15:34:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31435 states to 31435 states and 42816 transitions. [2020-12-22 15:34:41,994 INFO L78 Accepts]: Start accepts. Automaton has 31435 states and 42816 transitions. Word has length 58 [2020-12-22 15:34:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:34:41,995 INFO L481 AbstractCegarLoop]: Abstraction has 31435 states and 42816 transitions. [2020-12-22 15:34:41,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:34:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 31435 states and 42816 transitions. [2020-12-22 15:34:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 15:34:42,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:34:42,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:34:42,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:34:42,017 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 15:34:42,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:34:42,019 INFO L82 PathProgramCache]: Analyzing trace with hash 707108999, now seen corresponding path program 1 times [2020-12-22 15:34:42,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:34:42,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528476749] [2020-12-22 15:34:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:34:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:34:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:34:42,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528476749] [2020-12-22 15:34:42,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:34:42,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:34:42,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259196820] [2020-12-22 15:34:42,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:34:42,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:34:42,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:34:42,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:34:42,519 INFO L87 Difference]: Start difference. First operand 31435 states and 42816 transitions. Second operand 3 states. [2020-12-22 15:34:46,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:34:46,707 INFO L93 Difference]: Finished difference Result 83497 states and 113890 transitions. [2020-12-22 15:34:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:34:46,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 15:34:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:34:46,883 INFO L225 Difference]: With dead ends: 83497 [2020-12-22 15:34:46,884 INFO L226 Difference]: Without dead ends: 52106 [2020-12-22 15:34:47,017 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 15:34:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52106 states. [2020-12-22 15:34:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52106 to 52090. [2020-12-22 15:34:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52090 states. [2020-12-22 15:34:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 71081 transitions. [2020-12-22 15:34:49,023 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 71081 transitions. Word has length 97 [2020-12-22 15:34:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:34:49,023 INFO L481 AbstractCegarLoop]: Abstraction has 52090 states and 71081 transitions. [2020-12-22 15:34:49,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:34:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 71081 transitions. [2020-12-22 15:34:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 15:34:49,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:34:49,044 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 15:34:49,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:34:49,045 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 15:34:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:34:49,045 INFO L82 PathProgramCache]: Analyzing trace with hash 679515850, now seen corresponding path program 1 times [2020-12-22 15:34:49,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:34:49,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047949374] [2020-12-22 15:34:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:34:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:34:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:34:49,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047949374] [2020-12-22 15:34:49,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:34:49,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:34:49,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562735052] [2020-12-22 15:34:49,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:34:49,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:34:49,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:34:49,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:34:49,615 INFO L87 Difference]: Start difference. First operand 52090 states and 71081 transitions. Second operand 3 states. [2020-12-22 15:34:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:34:53,627 INFO L93 Difference]: Finished difference Result 124805 states and 170416 transitions. [2020-12-22 15:34:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:34:53,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-22 15:34:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:34:53,897 INFO L225 Difference]: With dead ends: 124805 [2020-12-22 15:34:53,897 INFO L226 Difference]: Without dead ends: 72759 [2020-12-22 15:34:54,042 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 15:34:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72759 states. [2020-12-22 15:34:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72759 to 72743. [2020-12-22 15:34:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72743 states. [2020-12-22 15:34:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72743 states to 72743 states and 99342 transitions. [2020-12-22 15:34:56,636 INFO L78 Accepts]: Start accepts. Automaton has 72743 states and 99342 transitions. Word has length 128 [2020-12-22 15:34:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:34:56,637 INFO L481 AbstractCegarLoop]: Abstraction has 72743 states and 99342 transitions. [2020-12-22 15:34:56,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:34:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 72743 states and 99342 transitions. [2020-12-22 15:34:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 15:34:56,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:34:56,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:34:56,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:34:56,667 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 15:34:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:34:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1965631224, now seen corresponding path program 1 times [2020-12-22 15:34:56,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:34:56,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89336076] [2020-12-22 15:34:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:34:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:34:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:34:57,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89336076] [2020-12-22 15:34:57,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:34:57,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:34:57,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282205545] [2020-12-22 15:34:57,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:34:57,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:34:57,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:34:57,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:34:57,488 INFO L87 Difference]: Start difference. First operand 72743 states and 99342 transitions. Second operand 3 states. [2020-12-22 15:35:01,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:01,418 INFO L93 Difference]: Finished difference Result 166103 states and 226922 transitions. [2020-12-22 15:35:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:01,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 15:35:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:01,619 INFO L225 Difference]: With dead ends: 166103 [2020-12-22 15:35:01,620 INFO L226 Difference]: Without dead ends: 93404 [2020-12-22 15:35:01,735 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 15:35:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93404 states. [2020-12-22 15:35:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93404 to 93388. [2020-12-22 15:35:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93388 states. [2020-12-22 15:35:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93388 states to 93388 states and 127595 transitions. [2020-12-22 15:35:04,687 INFO L78 Accepts]: Start accepts. Automaton has 93388 states and 127595 transitions. Word has length 165 [2020-12-22 15:35:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:04,688 INFO L481 AbstractCegarLoop]: Abstraction has 93388 states and 127595 transitions. [2020-12-22 15:35:04,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 93388 states and 127595 transitions. [2020-12-22 15:35:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 15:35:04,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:04,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:04,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:35:04,716 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 15:35:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2089096326, now seen corresponding path program 1 times [2020-12-22 15:35:04,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:04,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407526700] [2020-12-22 15:35:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:35:05,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407526700] [2020-12-22 15:35:05,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:05,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:35:05,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239720766] [2020-12-22 15:35:05,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:05,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:05,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:05,449 INFO L87 Difference]: Start difference. First operand 93388 states and 127595 transitions. Second operand 3 states. [2020-12-22 15:35:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:09,995 INFO L93 Difference]: Finished difference Result 207399 states and 283440 transitions. [2020-12-22 15:35:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:09,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 15:35:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:10,333 INFO L225 Difference]: With dead ends: 207399 [2020-12-22 15:35:10,334 INFO L226 Difference]: Without dead ends: 114055 [2020-12-22 15:35:10,605 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 15:35:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114055 states. [2020-12-22 15:35:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114055 to 114039. [2020-12-22 15:35:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114039 states. [2020-12-22 15:35:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114039 states to 114039 states and 155854 transitions. [2020-12-22 15:35:13,685 INFO L78 Accepts]: Start accepts. Automaton has 114039 states and 155854 transitions. Word has length 165 [2020-12-22 15:35:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:13,686 INFO L481 AbstractCegarLoop]: Abstraction has 114039 states and 155854 transitions. [2020-12-22 15:35:13,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 114039 states and 155854 transitions. [2020-12-22 15:35:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 15:35:13,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:13,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:13,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:35:13,713 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 15:35:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:13,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1692469005, now seen corresponding path program 1 times [2020-12-22 15:35:13,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:13,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337649236] [2020-12-22 15:35:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 15:35:14,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337649236] [2020-12-22 15:35:14,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:14,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:35:14,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828390075] [2020-12-22 15:35:14,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:14,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:14,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:14,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:14,538 INFO L87 Difference]: Start difference. First operand 114039 states and 155854 transitions. Second operand 3 states. [2020-12-22 15:35:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:35:18,491 INFO L93 Difference]: Finished difference Result 333061 states and 455232 transitions. [2020-12-22 15:35:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:35:18,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2020-12-22 15:35:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:35:19,045 INFO L225 Difference]: With dead ends: 333061 [2020-12-22 15:35:19,045 INFO L226 Difference]: Without dead ends: 219066 [2020-12-22 15:35:19,232 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 15:35:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219066 states. [2020-12-22 15:35:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219066 to 219058. [2020-12-22 15:35:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219058 states. [2020-12-22 15:35:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219058 states to 219058 states and 299419 transitions. [2020-12-22 15:35:24,537 INFO L78 Accepts]: Start accepts. Automaton has 219058 states and 299419 transitions. Word has length 186 [2020-12-22 15:35:24,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:35:24,537 INFO L481 AbstractCegarLoop]: Abstraction has 219058 states and 299419 transitions. [2020-12-22 15:35:24,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:35:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 219058 states and 299419 transitions. [2020-12-22 15:35:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-12-22 15:35:24,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:35:24,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:35:24,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:35:24,560 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 15:35:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:35:24,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2001600949, now seen corresponding path program 1 times [2020-12-22 15:35:24,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:35:24,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902454778] [2020-12-22 15:35:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:35:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:35:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 15:35:25,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902454778] [2020-12-22 15:35:25,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:35:25,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:35:25,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643829291] [2020-12-22 15:35:25,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:35:25,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:35:25,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:35:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:35:25,434 INFO L87 Difference]: Start difference. First operand 219058 states and 299419 transitions. Second operand 3 states.