/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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:08:05,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:08:05,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:08:05,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:08:05,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:08:05,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:08:05,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:08:05,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:08:05,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:08:05,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:08:05,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:08:05,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:08:05,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:08:05,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:08:05,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:08:05,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:08:05,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:08:05,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:08:05,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:08:05,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:08:05,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:08:05,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:08:05,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:08:05,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:08:05,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:08:05,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:08:05,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:08:05,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:08:05,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:08:05,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:08:05,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:08:05,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:08:05,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:08:05,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:08:05,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:08:05,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:08:05,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:08:05,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:08:05,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:08:05,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:08:05,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:08:05,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:08:05,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:08:05,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:08:05,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:08:05,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:08:05,994 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:08:05,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:08:05,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:08:05,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:08:05,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:08:05,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:08:05,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:08:05,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:08:05,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:08:05,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:08:05,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:08:05,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:08:05,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:08:05,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:08:05,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:08:05,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:08:05,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:08:05,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:08:05,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:08:05,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:08:05,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:08:05,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:08:06,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:08:06,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:08:06,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:08:06,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:08:06,505 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:08:06,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2020-12-22 14:08:06,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ca8acc0/ee60fc27aef34a0f8542c83123b8eb2f/FLAGeb4a09326 [2020-12-22 14:08:07,924 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:08:07,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2020-12-22 14:08:08,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ca8acc0/ee60fc27aef34a0f8542c83123b8eb2f/FLAGeb4a09326 [2020-12-22 14:08:08,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ca8acc0/ee60fc27aef34a0f8542c83123b8eb2f [2020-12-22 14:08:08,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:08:08,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:08:08,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:08:08,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:08:08,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:08:08,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:08:08" (1/1) ... [2020-12-22 14:08:08,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbc6537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:08, skipping insertion in model container [2020-12-22 14:08:08,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:08:08" (1/1) ... [2020-12-22 14:08:08,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:08:08,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:08:12,418 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2020-12-22 14:08:12,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:08:12,598 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:08:13,593 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2020-12-22 14:08:13,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:08:14,560 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:08:14,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14 WrapperNode [2020-12-22 14:08:14,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:08:14,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:08:14,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:08:14,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:08:14,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:14,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:16,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:08:16,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:08:16,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:08:16,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:08:16,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:16,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:16,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:16,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:17,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:17,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:17,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (1/1) ... [2020-12-22 14:08:18,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:08:18,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:08:18,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:08:18,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:08:18,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (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 14:08:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-12-22 14:08:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:08:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:08:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:08:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:08:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:08:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:08:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:08:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:08:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:08:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:08:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:08:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:08:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:08:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:08:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:09:20,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:09:20,743 INFO L299 CfgBuilder]: Removed 8575 assume(true) statements. [2020-12-22 14:09:20,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:09:20 BoogieIcfgContainer [2020-12-22 14:09:20,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:09:20,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:09:20,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:09:20,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:09:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:08:08" (1/3) ... [2020-12-22 14:09:20,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee90008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:09:20, skipping insertion in model container [2020-12-22 14:09:20,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:08:14" (2/3) ... [2020-12-22 14:09:20,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee90008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:09:20, skipping insertion in model container [2020-12-22 14:09:20,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:09:20" (3/3) ... [2020-12-22 14:09:20,765 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2020-12-22 14:09:20,777 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:09:20,785 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2020-12-22 14:09:20,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2020-12-22 14:09:20,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:09:20,858 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:09:20,858 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:09:20,858 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:09:20,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:09:20,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:09:20,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:09:20,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:09:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8154 states. [2020-12-22 14:09:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 14:09:20,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:09:20,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:09:20,991 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:09:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:09:20,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1393914949, now seen corresponding path program 1 times [2020-12-22 14:09:21,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:09:21,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915388715] [2020-12-22 14:09:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:09:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:09:22,025 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 14:09:22,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915388715] [2020-12-22 14:09:22,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:09:22,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:09:22,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94961109] [2020-12-22 14:09:22,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:09:22,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:09:22,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:09:22,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:09:22,052 INFO L87 Difference]: Start difference. First operand 8154 states. Second operand 3 states. [2020-12-22 14:09:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:09:22,928 INFO L93 Difference]: Finished difference Result 24436 states and 32774 transitions. [2020-12-22 14:09:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:09:22,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 14:09:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:09:23,033 INFO L225 Difference]: With dead ends: 24436 [2020-12-22 14:09:23,033 INFO L226 Difference]: Without dead ends: 16039 [2020-12-22 14:09:23,063 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 14:09:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16039 states. [2020-12-22 14:09:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16039 to 16011. [2020-12-22 14:09:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16011 states. [2020-12-22 14:09:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16011 states to 16011 states and 20550 transitions. [2020-12-22 14:09:23,670 INFO L78 Accepts]: Start accepts. Automaton has 16011 states and 20550 transitions. Word has length 17 [2020-12-22 14:09:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:09:23,671 INFO L481 AbstractCegarLoop]: Abstraction has 16011 states and 20550 transitions. [2020-12-22 14:09:23,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:09:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 16011 states and 20550 transitions. [2020-12-22 14:09:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 14:09:23,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:09:23,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:09:23,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:09:23,691 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:09:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:09:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1538739172, now seen corresponding path program 1 times [2020-12-22 14:09:23,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:09:23,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723899812] [2020-12-22 14:09:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:09:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:09:24,143 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 14:09:24,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723899812] [2020-12-22 14:09:24,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:09:24,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:09:24,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426408642] [2020-12-22 14:09:24,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:09:24,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:09:24,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:09:24,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:09:24,148 INFO L87 Difference]: Start difference. First operand 16011 states and 20550 transitions. Second operand 3 states. [2020-12-22 14:09:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:09:24,988 INFO L93 Difference]: Finished difference Result 32865 states and 42270 transitions. [2020-12-22 14:09:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:09:24,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 14:09:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:09:25,083 INFO L225 Difference]: With dead ends: 32865 [2020-12-22 14:09:25,083 INFO L226 Difference]: Without dead ends: 16857 [2020-12-22 14:09:25,113 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 14:09:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2020-12-22 14:09:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16817. [2020-12-22 14:09:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16817 states. [2020-12-22 14:09:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 21678 transitions. [2020-12-22 14:09:25,588 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 21678 transitions. Word has length 42 [2020-12-22 14:09:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:09:25,589 INFO L481 AbstractCegarLoop]: Abstraction has 16817 states and 21678 transitions. [2020-12-22 14:09:25,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:09:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 21678 transitions. [2020-12-22 14:09:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 14:09:25,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:09:25,599 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] [2020-12-22 14:09:25,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:09:25,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:09:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:09:25,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1876995584, now seen corresponding path program 1 times [2020-12-22 14:09:25,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:09:25,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965924264] [2020-12-22 14:09:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:09:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:09:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:09:26,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965924264] [2020-12-22 14:09:26,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:09:26,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:09:26,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469325650] [2020-12-22 14:09:26,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:09:26,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:09:26,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:09:26,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:09:26,239 INFO L87 Difference]: Start difference. First operand 16817 states and 21678 transitions. Second operand 4 states. [2020-12-22 14:09:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:09:28,835 INFO L93 Difference]: Finished difference Result 33646 states and 43373 transitions. [2020-12-22 14:09:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:09:28,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-22 14:09:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:09:28,888 INFO L225 Difference]: With dead ends: 33646 [2020-12-22 14:09:28,888 INFO L226 Difference]: Without dead ends: 16826 [2020-12-22 14:09:28,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:09:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16826 states. [2020-12-22 14:09:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16826 to 16820. [2020-12-22 14:09:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16820 states. [2020-12-22 14:09:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 21679 transitions. [2020-12-22 14:09:29,336 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 21679 transitions. Word has length 72 [2020-12-22 14:09:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:09:29,336 INFO L481 AbstractCegarLoop]: Abstraction has 16820 states and 21679 transitions. [2020-12-22 14:09:29,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:09:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 21679 transitions. [2020-12-22 14:09:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 14:09:29,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:09:29,343 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 14:09:29,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:09:29,344 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:09:29,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:09:29,344 INFO L82 PathProgramCache]: Analyzing trace with hash 866752574, now seen corresponding path program 1 times [2020-12-22 14:09:29,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:09:29,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600129722] [2020-12-22 14:09:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:09:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:09:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:09:29,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600129722] [2020-12-22 14:09:29,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:09:29,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:09:29,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455785630] [2020-12-22 14:09:29,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:09:29,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:09:29,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:09:29,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:09:29,954 INFO L87 Difference]: Start difference. First operand 16820 states and 21679 transitions. Second operand 4 states. [2020-12-22 14:09:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:09:30,957 INFO L93 Difference]: Finished difference Result 34540 states and 44606 transitions. [2020-12-22 14:09:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:09:30,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 14:09:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:09:31,004 INFO L225 Difference]: With dead ends: 34540 [2020-12-22 14:09:31,005 INFO L226 Difference]: Without dead ends: 17723 [2020-12-22 14:09:31,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:09:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17723 states. [2020-12-22 14:09:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17723 to 17674. [2020-12-22 14:09:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17674 states. [2020-12-22 14:09:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17674 states to 17674 states and 22872 transitions. [2020-12-22 14:09:31,771 INFO L78 Accepts]: Start accepts. Automaton has 17674 states and 22872 transitions. Word has length 81 [2020-12-22 14:09:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:09:31,773 INFO L481 AbstractCegarLoop]: Abstraction has 17674 states and 22872 transitions. [2020-12-22 14:09:31,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:09:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 17674 states and 22872 transitions. [2020-12-22 14:09:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 14:09:31,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:09:31,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:09:31,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:09:31,782 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:09:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:09:31,782 INFO L82 PathProgramCache]: Analyzing trace with hash -910241876, now seen corresponding path program 1 times [2020-12-22 14:09:31,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:09:31,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386369651] [2020-12-22 14:09:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:09:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:09:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:09:32,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386369651] [2020-12-22 14:09:32,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:09:32,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:09:32,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883672863] [2020-12-22 14:09:32,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:09:32,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:09:32,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:09:32,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:09:32,758 INFO L87 Difference]: Start difference. First operand 17674 states and 22872 transitions. Second operand 3 states. [2020-12-22 14:09:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:09:33,725 INFO L93 Difference]: Finished difference Result 35345 states and 45741 transitions. [2020-12-22 14:09:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:09:33,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 14:09:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:09:33,772 INFO L225 Difference]: With dead ends: 35345 [2020-12-22 14:09:33,772 INFO L226 Difference]: Without dead ends: 17674 [2020-12-22 14:09:33,796 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 14:09:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17674 states. [2020-12-22 14:09:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17674 to 17674. [2020-12-22 14:09:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17674 states. [2020-12-22 14:09:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17674 states to 17674 states and 22866 transitions. [2020-12-22 14:09:34,785 INFO L78 Accepts]: Start accepts. Automaton has 17674 states and 22866 transitions. Word has length 93 [2020-12-22 14:09:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:09:34,786 INFO L481 AbstractCegarLoop]: Abstraction has 17674 states and 22866 transitions. [2020-12-22 14:09:34,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:09:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17674 states and 22866 transitions. [2020-12-22 14:09:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 14:09:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:09:34,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:09:34,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:09:34,793 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:09:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:09:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash -71208214, now seen corresponding path program 1 times [2020-12-22 14:09:34,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:09:34,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327597874] [2020-12-22 14:09:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:09:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:09:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:09:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327597874] [2020-12-22 14:09:35,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:09:35,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:09:35,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138856304] [2020-12-22 14:09:35,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:09:35,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:09:35,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:09:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:09:35,559 INFO L87 Difference]: Start difference. First operand 17674 states and 22866 transitions. Second operand 7 states. [2020-12-22 14:09:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:09:57,914 INFO L93 Difference]: Finished difference Result 236900 states and 312030 transitions. [2020-12-22 14:09:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 14:09:57,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-22 14:09:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:09:58,747 INFO L225 Difference]: With dead ends: 236900 [2020-12-22 14:09:58,748 INFO L226 Difference]: Without dead ends: 219229 [2020-12-22 14:09:58,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-12-22 14:09:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219229 states. [2020-12-22 14:10:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219229 to 17684. [2020-12-22 14:10:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17684 states. [2020-12-22 14:10:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17684 states to 17684 states and 22876 transitions. [2020-12-22 14:10:02,496 INFO L78 Accepts]: Start accepts. Automaton has 17684 states and 22876 transitions. Word has length 93 [2020-12-22 14:10:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:10:02,496 INFO L481 AbstractCegarLoop]: Abstraction has 17684 states and 22876 transitions. [2020-12-22 14:10:02,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:10:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17684 states and 22876 transitions. [2020-12-22 14:10:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 14:10:02,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:10:02,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:10:02,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:10:02,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:10:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:10:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1089265618, now seen corresponding path program 1 times [2020-12-22 14:10:02,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:10:02,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530288082] [2020-12-22 14:10:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:10:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:10:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:10:04,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530288082] [2020-12-22 14:10:04,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:10:04,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:10:04,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385184549] [2020-12-22 14:10:04,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:10:04,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:10:04,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:10:04,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:10:04,205 INFO L87 Difference]: Start difference. First operand 17684 states and 22876 transitions. Second operand 3 states. [2020-12-22 14:10:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:10:06,667 INFO L93 Difference]: Finished difference Result 35419 states and 45857 transitions. [2020-12-22 14:10:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:10:06,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 14:10:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:10:06,699 INFO L225 Difference]: With dead ends: 35419 [2020-12-22 14:10:06,699 INFO L226 Difference]: Without dead ends: 17738 [2020-12-22 14:10:06,723 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 14:10:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2020-12-22 14:10:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 17738. [2020-12-22 14:10:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17738 states. [2020-12-22 14:10:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17738 states to 17738 states and 22930 transitions. [2020-12-22 14:10:08,484 INFO L78 Accepts]: Start accepts. Automaton has 17738 states and 22930 transitions. Word has length 99 [2020-12-22 14:10:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:10:08,484 INFO L481 AbstractCegarLoop]: Abstraction has 17738 states and 22930 transitions. [2020-12-22 14:10:08,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:10:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 17738 states and 22930 transitions. [2020-12-22 14:10:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 14:10:08,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:10:08,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:10:08,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:10:08,493 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:10:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:10:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1569110668, now seen corresponding path program 1 times [2020-12-22 14:10:08,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:10:08,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23618103] [2020-12-22 14:10:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:10:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:10:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:10:09,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23618103] [2020-12-22 14:10:09,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473098773] [2020-12-22 14:10:09,744 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 14:10:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:10:13,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 3804 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 14:10:13,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:10:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 14:10:13,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:10:13,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-12-22 14:10:13,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858024871] [2020-12-22 14:10:13,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:10:13,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:10:13,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:10:13,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:10:13,847 INFO L87 Difference]: Start difference. First operand 17738 states and 22930 transitions. Second operand 5 states. [2020-12-22 14:10:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:10:18,567 INFO L93 Difference]: Finished difference Result 35502 states and 45893 transitions. [2020-12-22 14:10:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 14:10:18,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 14:10:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:10:18,615 INFO L225 Difference]: With dead ends: 35502 [2020-12-22 14:10:18,616 INFO L226 Difference]: Without dead ends: 17752 [2020-12-22 14:10:18,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 14:10:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17752 states. [2020-12-22 14:10:20,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17752 to 17609. [2020-12-22 14:10:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17609 states. [2020-12-22 14:10:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17609 states to 17609 states and 22771 transitions. [2020-12-22 14:10:20,234 INFO L78 Accepts]: Start accepts. Automaton has 17609 states and 22771 transitions. Word has length 100 [2020-12-22 14:10:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:10:20,234 INFO L481 AbstractCegarLoop]: Abstraction has 17609 states and 22771 transitions. [2020-12-22 14:10:20,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:10:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 17609 states and 22771 transitions. [2020-12-22 14:10:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 14:10:20,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:10:20,243 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, 1, 1, 1, 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 14:10:20,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 14:10:20,458 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:10:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:10:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash -498303244, now seen corresponding path program 1 times [2020-12-22 14:10:20,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:10:20,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16373564] [2020-12-22 14:10:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:10:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:10:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 14:10:21,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16373564] [2020-12-22 14:10:21,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:10:21,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:10:21,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124790157] [2020-12-22 14:10:21,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:10:21,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:10:21,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:10:21,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:10:21,391 INFO L87 Difference]: Start difference. First operand 17609 states and 22771 transitions. Second operand 7 states. [2020-12-22 14:10:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:10:34,608 INFO L93 Difference]: Finished difference Result 87477 states and 112927 transitions. [2020-12-22 14:10:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 14:10:34,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-12-22 14:10:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:10:34,715 INFO L225 Difference]: With dead ends: 87477 [2020-12-22 14:10:34,716 INFO L226 Difference]: Without dead ends: 69871 [2020-12-22 14:10:34,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 14:10:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69871 states. [2020-12-22 14:10:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69871 to 17996. [2020-12-22 14:10:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17996 states. [2020-12-22 14:10:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17996 states to 17996 states and 23308 transitions. [2020-12-22 14:10:37,094 INFO L78 Accepts]: Start accepts. Automaton has 17996 states and 23308 transitions. Word has length 108 [2020-12-22 14:10:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:10:37,096 INFO L481 AbstractCegarLoop]: Abstraction has 17996 states and 23308 transitions. [2020-12-22 14:10:37,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:10:37,096 INFO L276 IsEmpty]: Start isEmpty. Operand 17996 states and 23308 transitions. [2020-12-22 14:10:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 14:10:37,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:10:37,110 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, 1, 1, 1, 1, 1, 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 14:10:37,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:10:37,111 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:10:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:10:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1807008688, now seen corresponding path program 1 times [2020-12-22 14:10:37,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:10:37,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768118103] [2020-12-22 14:10:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:10:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:10:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:10:38,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768118103] [2020-12-22 14:10:38,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412893445] [2020-12-22 14:10:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true