/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:13:27,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:13:27,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:13:27,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:13:27,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:13:27,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:13:27,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:13:27,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:13:27,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:13:27,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:13:27,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:13:27,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:13:27,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:13:27,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:13:27,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:13:27,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:13:27,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:13:27,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:13:27,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:13:27,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:13:27,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:13:27,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:13:27,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:13:27,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:13:27,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:13:27,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:13:27,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:13:27,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:13:27,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:13:27,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:13:27,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:13:27,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:13:27,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:13:27,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:13:27,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:13:27,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:13:27,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:13:27,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:13:27,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:13:27,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:13:27,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:13:27,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:13:27,853 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:13:27,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:13:27,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:13:27,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:13:27,858 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:13:27,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:13:27,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:13:27,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:13:27,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:13:27,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:13:27,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:13:27,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:13:27,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:13:27,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:13:27,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:13:27,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:13:27,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:13:27,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:13:27,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:13:27,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:13:27,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:13:27,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:13:27,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:13:27,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:13:27,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:13:27,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:13:28,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:13:28,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:13:28,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:13:28,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:13:28,328 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:13:28,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2020-12-22 13:13:28,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91103749/a8aa23213a984568ad80629ce2eb36c7/FLAGe7704fd4a [2020-12-22 13:13:29,257 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:13:29,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2020-12-22 13:13:29,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91103749/a8aa23213a984568ad80629ce2eb36c7/FLAGe7704fd4a [2020-12-22 13:13:29,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91103749/a8aa23213a984568ad80629ce2eb36c7 [2020-12-22 13:13:29,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:13:29,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:13:29,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:13:29,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:13:29,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:13:29,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:13:29" (1/1) ... [2020-12-22 13:13:29,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533fb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:29, skipping insertion in model container [2020-12-22 13:13:29,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:13:29" (1/1) ... [2020-12-22 13:13:29,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:13:29,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:13:30,708 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2020-12-22 13:13:30,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:13:31,030 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:13:31,176 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2020-12-22 13:13:31,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:13:31,396 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:13:31,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31 WrapperNode [2020-12-22 13:13:31,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:13:31,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:13:31,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:13:31,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:13:31,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:13:31,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:13:31,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:13:31,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:13:31,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... [2020-12-22 13:13:31,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:13:31,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:13:31,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:13:31,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:13:31,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:13:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:13:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:13:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:13:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:13:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:13:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:13:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:13:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:13:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:13:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:13:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:13:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:13:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:13:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:13:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:13:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:13:34,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:13:34,586 INFO L299 CfgBuilder]: Removed 333 assume(true) statements. [2020-12-22 13:13:34,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:13:34 BoogieIcfgContainer [2020-12-22 13:13:34,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:13:34,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:13:34,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:13:34,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:13:34,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:13:29" (1/3) ... [2020-12-22 13:13:34,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441e6bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:13:34, skipping insertion in model container [2020-12-22 13:13:34,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:13:31" (2/3) ... [2020-12-22 13:13:34,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441e6bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:13:34, skipping insertion in model container [2020-12-22 13:13:34,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:13:34" (3/3) ... [2020-12-22 13:13:34,598 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2020-12-22 13:13:34,605 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:13:34,611 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 13:13:34,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 13:13:34,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:13:34,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:13:34,663 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:13:34,663 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:13:34,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:13:34,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:13:34,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:13:34,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:13:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states. [2020-12-22 13:13:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 13:13:34,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:34,698 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] [2020-12-22 13:13:34,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:34,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:34,706 INFO L82 PathProgramCache]: Analyzing trace with hash 146323834, now seen corresponding path program 1 times [2020-12-22 13:13:34,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:34,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881144959] [2020-12-22 13:13:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:35,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881144959] [2020-12-22 13:13:35,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:35,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:13:35,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814839685] [2020-12-22 13:13:35,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:35,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:35,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:35,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:35,232 INFO L87 Difference]: Start difference. First operand 295 states. Second operand 3 states. [2020-12-22 13:13:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:35,314 INFO L93 Difference]: Finished difference Result 586 states and 813 transitions. [2020-12-22 13:13:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:35,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 13:13:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:35,332 INFO L225 Difference]: With dead ends: 586 [2020-12-22 13:13:35,332 INFO L226 Difference]: Without dead ends: 286 [2020-12-22 13:13:35,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-12-22 13:13:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2020-12-22 13:13:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-22 13:13:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 378 transitions. [2020-12-22 13:13:35,407 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 378 transitions. Word has length 21 [2020-12-22 13:13:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:35,408 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 378 transitions. [2020-12-22 13:13:35,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 378 transitions. [2020-12-22 13:13:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 13:13:35,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:35,410 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] [2020-12-22 13:13:35,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:13:35,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash 656053662, now seen corresponding path program 1 times [2020-12-22 13:13:35,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:35,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384004632] [2020-12-22 13:13:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:13:35,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384004632] [2020-12-22 13:13:35,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:35,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:13:35,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418021086] [2020-12-22 13:13:35,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:35,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:35,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:35,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:35,604 INFO L87 Difference]: Start difference. First operand 286 states and 378 transitions. Second operand 3 states. [2020-12-22 13:13:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:35,787 INFO L93 Difference]: Finished difference Result 779 states and 1044 transitions. [2020-12-22 13:13:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:35,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 13:13:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:35,793 INFO L225 Difference]: With dead ends: 779 [2020-12-22 13:13:35,793 INFO L226 Difference]: Without dead ends: 514 [2020-12-22 13:13:35,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-12-22 13:13:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512. [2020-12-22 13:13:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-12-22 13:13:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 687 transitions. [2020-12-22 13:13:35,869 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 687 transitions. Word has length 22 [2020-12-22 13:13:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:35,870 INFO L481 AbstractCegarLoop]: Abstraction has 512 states and 687 transitions. [2020-12-22 13:13:35,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 687 transitions. [2020-12-22 13:13:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 13:13:35,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:35,875 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] [2020-12-22 13:13:35,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:13:35,876 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:35,877 INFO L82 PathProgramCache]: Analyzing trace with hash -976116528, now seen corresponding path program 1 times [2020-12-22 13:13:35,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:35,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020299221] [2020-12-22 13:13:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:36,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020299221] [2020-12-22 13:13:36,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187035508] [2020-12-22 13:13:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:36,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:13:36,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:13:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:36,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:13:36,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:13:36,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912968232] [2020-12-22 13:13:36,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:13:36,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:36,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:13:36,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:13:36,858 INFO L87 Difference]: Start difference. First operand 512 states and 687 transitions. Second operand 6 states. [2020-12-22 13:13:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:36,902 INFO L93 Difference]: Finished difference Result 1005 states and 1352 transitions. [2020-12-22 13:13:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:13:36,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-12-22 13:13:36,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:36,907 INFO L225 Difference]: With dead ends: 1005 [2020-12-22 13:13:36,907 INFO L226 Difference]: Without dead ends: 513 [2020-12-22 13:13:36,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:13:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-12-22 13:13:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2020-12-22 13:13:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-12-22 13:13:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 688 transitions. [2020-12-22 13:13:36,938 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 688 transitions. Word has length 29 [2020-12-22 13:13:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:36,939 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 688 transitions. [2020-12-22 13:13:36,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:13:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 688 transitions. [2020-12-22 13:13:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 13:13:36,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:36,941 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] [2020-12-22 13:13:37,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 13:13:37,156 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:37,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1674109708, now seen corresponding path program 2 times [2020-12-22 13:13:37,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:37,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106881001] [2020-12-22 13:13:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106881001] [2020-12-22 13:13:37,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565372992] [2020-12-22 13:13:37,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:37,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:13:37,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:13:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:13:37,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:13:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:13:37,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:13:37,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2020-12-22 13:13:37,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576511401] [2020-12-22 13:13:37,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:37,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:37,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:13:37,990 INFO L87 Difference]: Start difference. First operand 513 states and 688 transitions. Second operand 3 states. [2020-12-22 13:13:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:38,015 INFO L93 Difference]: Finished difference Result 513 states and 688 transitions. [2020-12-22 13:13:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:38,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 13:13:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:38,019 INFO L225 Difference]: With dead ends: 513 [2020-12-22 13:13:38,019 INFO L226 Difference]: Without dead ends: 511 [2020-12-22 13:13:38,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:13:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-12-22 13:13:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2020-12-22 13:13:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-12-22 13:13:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 686 transitions. [2020-12-22 13:13:38,046 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 686 transitions. Word has length 30 [2020-12-22 13:13:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:38,047 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 686 transitions. [2020-12-22 13:13:38,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 686 transitions. [2020-12-22 13:13:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 13:13:38,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:38,049 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] [2020-12-22 13:13:38,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:38,263 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash -357794123, now seen corresponding path program 1 times [2020-12-22 13:13:38,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:38,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678479729] [2020-12-22 13:13:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:38,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678479729] [2020-12-22 13:13:38,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487821838] [2020-12-22 13:13:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:38,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:13:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:13:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:38,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:13:38,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:13:38,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713374337] [2020-12-22 13:13:38,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:13:38,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:13:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:13:38,878 INFO L87 Difference]: Start difference. First operand 511 states and 686 transitions. Second operand 8 states. [2020-12-22 13:13:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:38,937 INFO L93 Difference]: Finished difference Result 1002 states and 1349 transitions. [2020-12-22 13:13:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:13:38,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 13:13:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:38,941 INFO L225 Difference]: With dead ends: 1002 [2020-12-22 13:13:38,942 INFO L226 Difference]: Without dead ends: 512 [2020-12-22 13:13:38,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:13:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-12-22 13:13:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-12-22 13:13:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-12-22 13:13:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 687 transitions. [2020-12-22 13:13:38,973 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 687 transitions. Word has length 31 [2020-12-22 13:13:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:38,974 INFO L481 AbstractCegarLoop]: Abstraction has 512 states and 687 transitions. [2020-12-22 13:13:38,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:13:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 687 transitions. [2020-12-22 13:13:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 13:13:38,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:38,978 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:39,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:39,193 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:39,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1114341927, now seen corresponding path program 2 times [2020-12-22 13:13:39,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:39,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139161872] [2020-12-22 13:13:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:13:39,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139161872] [2020-12-22 13:13:39,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198282811] [2020-12-22 13:13:39,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:39,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:13:39,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:13:39,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:13:39,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:13:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:13:39,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:13:39,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-12-22 13:13:39,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813114968] [2020-12-22 13:13:39,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:13:39,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:13:39,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:13:39,915 INFO L87 Difference]: Start difference. First operand 512 states and 687 transitions. Second operand 4 states. [2020-12-22 13:13:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:39,970 INFO L93 Difference]: Finished difference Result 512 states and 687 transitions. [2020-12-22 13:13:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:39,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-22 13:13:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:39,975 INFO L225 Difference]: With dead ends: 512 [2020-12-22 13:13:39,975 INFO L226 Difference]: Without dead ends: 510 [2020-12-22 13:13:39,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:13:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-12-22 13:13:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2020-12-22 13:13:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-12-22 13:13:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 685 transitions. [2020-12-22 13:13:40,009 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 685 transitions. Word has length 32 [2020-12-22 13:13:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:40,010 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 685 transitions. [2020-12-22 13:13:40,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:13:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 685 transitions. [2020-12-22 13:13:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 13:13:40,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:40,011 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:40,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:40,227 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:40,229 INFO L82 PathProgramCache]: Analyzing trace with hash -184862086, now seen corresponding path program 1 times [2020-12-22 13:13:40,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:40,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790620089] [2020-12-22 13:13:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:13:40,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790620089] [2020-12-22 13:13:40,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:40,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:13:40,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060961672] [2020-12-22 13:13:40,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:40,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:40,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:40,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:40,330 INFO L87 Difference]: Start difference. First operand 510 states and 685 transitions. Second operand 3 states. [2020-12-22 13:13:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:40,359 INFO L93 Difference]: Finished difference Result 510 states and 685 transitions. [2020-12-22 13:13:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:40,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 13:13:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:40,363 INFO L225 Difference]: With dead ends: 510 [2020-12-22 13:13:40,363 INFO L226 Difference]: Without dead ends: 508 [2020-12-22 13:13:40,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-12-22 13:13:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-12-22 13:13:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-12-22 13:13:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 683 transitions. [2020-12-22 13:13:40,393 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 683 transitions. Word has length 33 [2020-12-22 13:13:40,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:40,393 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 683 transitions. [2020-12-22 13:13:40,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 683 transitions. [2020-12-22 13:13:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 13:13:40,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:40,395 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:40,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:13:40,395 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1435758077, now seen corresponding path program 1 times [2020-12-22 13:13:40,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:40,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703369834] [2020-12-22 13:13:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:13:40,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703369834] [2020-12-22 13:13:40,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:40,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:13:40,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213559423] [2020-12-22 13:13:40,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:40,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:40,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:40,487 INFO L87 Difference]: Start difference. First operand 508 states and 683 transitions. Second operand 3 states. [2020-12-22 13:13:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:40,567 INFO L93 Difference]: Finished difference Result 1469 states and 1988 transitions. [2020-12-22 13:13:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:40,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 13:13:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:40,574 INFO L225 Difference]: With dead ends: 1469 [2020-12-22 13:13:40,574 INFO L226 Difference]: Without dead ends: 984 [2020-12-22 13:13:40,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-12-22 13:13:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 981. [2020-12-22 13:13:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-12-22 13:13:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1327 transitions. [2020-12-22 13:13:40,637 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1327 transitions. Word has length 34 [2020-12-22 13:13:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:40,637 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1327 transitions. [2020-12-22 13:13:40,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1327 transitions. [2020-12-22 13:13:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 13:13:40,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:40,639 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:40,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:13:40,639 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1558828124, now seen corresponding path program 1 times [2020-12-22 13:13:40,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:40,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209422532] [2020-12-22 13:13:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:13:40,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209422532] [2020-12-22 13:13:40,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:40,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:13:40,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137456116] [2020-12-22 13:13:40,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:40,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:40,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:40,763 INFO L87 Difference]: Start difference. First operand 981 states and 1327 transitions. Second operand 3 states. [2020-12-22 13:13:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:40,823 INFO L93 Difference]: Finished difference Result 981 states and 1327 transitions. [2020-12-22 13:13:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:40,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 13:13:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:40,831 INFO L225 Difference]: With dead ends: 981 [2020-12-22 13:13:40,832 INFO L226 Difference]: Without dead ends: 972 [2020-12-22 13:13:40,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-12-22 13:13:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2020-12-22 13:13:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-12-22 13:13:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1315 transitions. [2020-12-22 13:13:40,894 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1315 transitions. Word has length 35 [2020-12-22 13:13:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:40,895 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1315 transitions. [2020-12-22 13:13:40,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1315 transitions. [2020-12-22 13:13:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 13:13:40,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:40,897 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:40,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:13:40,899 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1705953423, now seen corresponding path program 1 times [2020-12-22 13:13:40,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:40,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293144357] [2020-12-22 13:13:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:13:41,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293144357] [2020-12-22 13:13:41,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:41,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:13:41,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588813587] [2020-12-22 13:13:41,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:41,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:41,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:41,014 INFO L87 Difference]: Start difference. First operand 972 states and 1315 transitions. Second operand 3 states. [2020-12-22 13:13:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:41,151 INFO L93 Difference]: Finished difference Result 2375 states and 3210 transitions. [2020-12-22 13:13:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:41,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 13:13:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:41,160 INFO L225 Difference]: With dead ends: 2375 [2020-12-22 13:13:41,160 INFO L226 Difference]: Without dead ends: 1426 [2020-12-22 13:13:41,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2020-12-22 13:13:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1418. [2020-12-22 13:13:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-12-22 13:13:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1911 transitions. [2020-12-22 13:13:41,247 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1911 transitions. Word has length 61 [2020-12-22 13:13:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:41,247 INFO L481 AbstractCegarLoop]: Abstraction has 1418 states and 1911 transitions. [2020-12-22 13:13:41,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1911 transitions. [2020-12-22 13:13:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:13:41,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:41,250 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:41,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:13:41,251 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2079480930, now seen corresponding path program 1 times [2020-12-22 13:13:41,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:41,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157633178] [2020-12-22 13:13:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:13:41,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157633178] [2020-12-22 13:13:41,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:41,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:13:41,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510161796] [2020-12-22 13:13:41,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:13:41,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:41,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:13:41,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:41,409 INFO L87 Difference]: Start difference. First operand 1418 states and 1911 transitions. Second operand 5 states. [2020-12-22 13:13:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:41,838 INFO L93 Difference]: Finished difference Result 5797 states and 7806 transitions. [2020-12-22 13:13:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:13:41,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-12-22 13:13:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:41,863 INFO L225 Difference]: With dead ends: 5797 [2020-12-22 13:13:41,863 INFO L226 Difference]: Without dead ends: 4402 [2020-12-22 13:13:41,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:13:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2020-12-22 13:13:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 1426. [2020-12-22 13:13:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-12-22 13:13:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1917 transitions. [2020-12-22 13:13:42,036 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1917 transitions. Word has length 79 [2020-12-22 13:13:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:42,036 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 1917 transitions. [2020-12-22 13:13:42,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:13:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1917 transitions. [2020-12-22 13:13:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:13:42,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:42,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:42,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:13:42,039 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1204369116, now seen corresponding path program 1 times [2020-12-22 13:13:42,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:42,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547148520] [2020-12-22 13:13:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 13:13:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547148520] [2020-12-22 13:13:42,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933982704] [2020-12-22 13:13:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 13:13:42,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:13:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 13:13:42,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:13:42,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 13:13:42,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042766756] [2020-12-22 13:13:42,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:13:42,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:42,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:13:42,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:13:42,842 INFO L87 Difference]: Start difference. First operand 1426 states and 1917 transitions. Second operand 10 states. [2020-12-22 13:13:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:43,009 INFO L93 Difference]: Finished difference Result 2831 states and 3810 transitions. [2020-12-22 13:13:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:13:43,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-12-22 13:13:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:43,017 INFO L225 Difference]: With dead ends: 2831 [2020-12-22 13:13:43,017 INFO L226 Difference]: Without dead ends: 1427 [2020-12-22 13:13:43,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:13:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2020-12-22 13:13:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2020-12-22 13:13:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-12-22 13:13:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1918 transitions. [2020-12-22 13:13:43,131 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1918 transitions. Word has length 79 [2020-12-22 13:13:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:43,131 INFO L481 AbstractCegarLoop]: Abstraction has 1427 states and 1918 transitions. [2020-12-22 13:13:43,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:13:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1918 transitions. [2020-12-22 13:13:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 13:13:43,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:43,135 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:43,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 13:13:43,348 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash 275832320, now seen corresponding path program 2 times [2020-12-22 13:13:43,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:43,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147205700] [2020-12-22 13:13:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:13:43,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147205700] [2020-12-22 13:13:43,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:43,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:13:43,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89213432] [2020-12-22 13:13:43,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:13:43,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:43,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:13:43,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:43,518 INFO L87 Difference]: Start difference. First operand 1427 states and 1918 transitions. Second operand 5 states. [2020-12-22 13:13:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:44,059 INFO L93 Difference]: Finished difference Result 5844 states and 7846 transitions. [2020-12-22 13:13:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:13:44,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 13:13:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:44,082 INFO L225 Difference]: With dead ends: 5844 [2020-12-22 13:13:44,082 INFO L226 Difference]: Without dead ends: 4441 [2020-12-22 13:13:44,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:13:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2020-12-22 13:13:44,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 1439. [2020-12-22 13:13:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1439 states. [2020-12-22 13:13:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1930 transitions. [2020-12-22 13:13:44,261 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1930 transitions. Word has length 80 [2020-12-22 13:13:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:44,262 INFO L481 AbstractCegarLoop]: Abstraction has 1439 states and 1930 transitions. [2020-12-22 13:13:44,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:13:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1930 transitions. [2020-12-22 13:13:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 13:13:44,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:44,271 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:13:44,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:13:44,271 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash -141489372, now seen corresponding path program 1 times [2020-12-22 13:13:44,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:44,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211387303] [2020-12-22 13:13:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 13:13:44,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211387303] [2020-12-22 13:13:44,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:44,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:13:44,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806079426] [2020-12-22 13:13:44,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:13:44,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:13:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:13:44,519 INFO L87 Difference]: Start difference. First operand 1439 states and 1930 transitions. Second operand 6 states. [2020-12-22 13:13:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:45,442 INFO L93 Difference]: Finished difference Result 9368 states and 12770 transitions. [2020-12-22 13:13:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:13:45,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 13:13:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:45,481 INFO L225 Difference]: With dead ends: 9368 [2020-12-22 13:13:45,481 INFO L226 Difference]: Without dead ends: 7953 [2020-12-22 13:13:45,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:13:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2020-12-22 13:13:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 2301. [2020-12-22 13:13:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2301 states. [2020-12-22 13:13:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3133 transitions. [2020-12-22 13:13:45,795 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3133 transitions. Word has length 82 [2020-12-22 13:13:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:45,795 INFO L481 AbstractCegarLoop]: Abstraction has 2301 states and 3133 transitions. [2020-12-22 13:13:45,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:13:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3133 transitions. [2020-12-22 13:13:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 13:13:45,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:45,799 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-12-22 13:13:45,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:13:45,800 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2112576136, now seen corresponding path program 1 times [2020-12-22 13:13:45,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:45,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483654551] [2020-12-22 13:13:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 13:13:45,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483654551] [2020-12-22 13:13:45,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:45,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:13:45,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57968876] [2020-12-22 13:13:45,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:13:45,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:45,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:13:45,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:45,895 INFO L87 Difference]: Start difference. First operand 2301 states and 3133 transitions. Second operand 3 states. [2020-12-22 13:13:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:46,256 INFO L93 Difference]: Finished difference Result 5514 states and 7532 transitions. [2020-12-22 13:13:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:13:46,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-22 13:13:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:46,288 INFO L225 Difference]: With dead ends: 5514 [2020-12-22 13:13:46,288 INFO L226 Difference]: Without dead ends: 3237 [2020-12-22 13:13:46,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:13:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2020-12-22 13:13:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3211. [2020-12-22 13:13:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3211 states. [2020-12-22 13:13:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4387 transitions. [2020-12-22 13:13:46,611 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4387 transitions. Word has length 109 [2020-12-22 13:13:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:46,611 INFO L481 AbstractCegarLoop]: Abstraction has 3211 states and 4387 transitions. [2020-12-22 13:13:46,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:13:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4387 transitions. [2020-12-22 13:13:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 13:13:46,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:46,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-12-22 13:13:46,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:13:46,617 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:46,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash 517970430, now seen corresponding path program 2 times [2020-12-22 13:13:46,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:46,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664973394] [2020-12-22 13:13:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:13:46,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664973394] [2020-12-22 13:13:46,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855440278] [2020-12-22 13:13:46,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:47,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:13:47,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:13:47,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:13:47,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:13:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:13:47,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:13:47,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 13:13:47,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583608625] [2020-12-22 13:13:47,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:13:47,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:47,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:13:47,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:47,646 INFO L87 Difference]: Start difference. First operand 3211 states and 4387 transitions. Second operand 4 states. [2020-12-22 13:13:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:48,521 INFO L93 Difference]: Finished difference Result 9589 states and 13108 transitions. [2020-12-22 13:13:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:13:48,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-22 13:13:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:48,542 INFO L225 Difference]: With dead ends: 9589 [2020-12-22 13:13:48,542 INFO L226 Difference]: Without dead ends: 9581 [2020-12-22 13:13:48,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 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 13:13:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9581 states. [2020-12-22 13:13:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9581 to 9163. [2020-12-22 13:13:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9163 states. [2020-12-22 13:13:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9163 states to 9163 states and 12615 transitions. [2020-12-22 13:13:49,274 INFO L78 Accepts]: Start accepts. Automaton has 9163 states and 12615 transitions. Word has length 109 [2020-12-22 13:13:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:49,275 INFO L481 AbstractCegarLoop]: Abstraction has 9163 states and 12615 transitions. [2020-12-22 13:13:49,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:13:49,275 INFO L276 IsEmpty]: Start isEmpty. Operand 9163 states and 12615 transitions. [2020-12-22 13:13:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 13:13:49,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:49,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2020-12-22 13:13:49,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:13:49,500 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:49,501 INFO L82 PathProgramCache]: Analyzing trace with hash 502451712, now seen corresponding path program 1 times [2020-12-22 13:13:49,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:49,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687300870] [2020-12-22 13:13:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:13:49,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687300870] [2020-12-22 13:13:49,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:49,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:13:49,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120600133] [2020-12-22 13:13:49,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:13:49,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:13:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:13:49,612 INFO L87 Difference]: Start difference. First operand 9163 states and 12615 transitions. Second operand 4 states. [2020-12-22 13:13:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:51,469 INFO L93 Difference]: Finished difference Result 33614 states and 46435 transitions. [2020-12-22 13:13:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:13:51,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-22 13:13:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:51,521 INFO L225 Difference]: With dead ends: 33614 [2020-12-22 13:13:51,521 INFO L226 Difference]: Without dead ends: 24475 [2020-12-22 13:13:51,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24475 states. [2020-12-22 13:13:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24475 to 9195. [2020-12-22 13:13:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9195 states. [2020-12-22 13:13:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9195 states to 9195 states and 12647 transitions. [2020-12-22 13:13:52,407 INFO L78 Accepts]: Start accepts. Automaton has 9195 states and 12647 transitions. Word has length 109 [2020-12-22 13:13:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:52,407 INFO L481 AbstractCegarLoop]: Abstraction has 9195 states and 12647 transitions. [2020-12-22 13:13:52,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:13:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 9195 states and 12647 transitions. [2020-12-22 13:13:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 13:13:52,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:52,418 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-12-22 13:13:52,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 13:13:52,418 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:52,419 INFO L82 PathProgramCache]: Analyzing trace with hash -576657306, now seen corresponding path program 1 times [2020-12-22 13:13:52,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:52,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339126994] [2020-12-22 13:13:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:13:52,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339126994] [2020-12-22 13:13:52,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:52,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:13:52,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555192776] [2020-12-22 13:13:52,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:13:52,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:52,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:13:52,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:13:52,568 INFO L87 Difference]: Start difference. First operand 9195 states and 12647 transitions. Second operand 4 states. [2020-12-22 13:13:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:55,429 INFO L93 Difference]: Finished difference Result 34792 states and 48039 transitions. [2020-12-22 13:13:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:13:55,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-12-22 13:13:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:55,500 INFO L225 Difference]: With dead ends: 34792 [2020-12-22 13:13:55,501 INFO L226 Difference]: Without dead ends: 30159 [2020-12-22 13:13:55,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:13:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30159 states. [2020-12-22 13:13:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30159 to 9243. [2020-12-22 13:13:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9243 states. [2020-12-22 13:13:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 12695 transitions. [2020-12-22 13:13:56,721 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 12695 transitions. Word has length 110 [2020-12-22 13:13:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:13:56,721 INFO L481 AbstractCegarLoop]: Abstraction has 9243 states and 12695 transitions. [2020-12-22 13:13:56,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:13:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 12695 transitions. [2020-12-22 13:13:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 13:13:56,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:13:56,731 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-12-22 13:13:56,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 13:13:56,731 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:13:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:13:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1799824277, now seen corresponding path program 1 times [2020-12-22 13:13:56,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:13:56,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854532570] [2020-12-22 13:13:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:13:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:13:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:13:56,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854532570] [2020-12-22 13:13:56,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:13:56,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:13:56,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664915135] [2020-12-22 13:13:57,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:13:57,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:13:57,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:13:57,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:13:57,001 INFO L87 Difference]: Start difference. First operand 9243 states and 12695 transitions. Second operand 4 states. [2020-12-22 13:13:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:13:58,788 INFO L93 Difference]: Finished difference Result 13829 states and 19020 transitions. [2020-12-22 13:13:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:13:58,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-12-22 13:13:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:13:58,811 INFO L225 Difference]: With dead ends: 13829 [2020-12-22 13:13:58,811 INFO L226 Difference]: Without dead ends: 13827 [2020-12-22 13:13:58,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:13:58,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2020-12-22 13:14:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 13817. [2020-12-22 13:14:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13817 states. [2020-12-22 13:14:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13817 states to 13817 states and 18999 transitions. [2020-12-22 13:14:00,140 INFO L78 Accepts]: Start accepts. Automaton has 13817 states and 18999 transitions. Word has length 112 [2020-12-22 13:14:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:00,140 INFO L481 AbstractCegarLoop]: Abstraction has 13817 states and 18999 transitions. [2020-12-22 13:14:00,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:14:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 13817 states and 18999 transitions. [2020-12-22 13:14:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 13:14:00,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:00,151 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-12-22 13:14:00,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 13:14:00,151 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:00,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:00,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1659275667, now seen corresponding path program 1 times [2020-12-22 13:14:00,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:00,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255101436] [2020-12-22 13:14:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:14:00,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255101436] [2020-12-22 13:14:00,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:00,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:14:00,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65778103] [2020-12-22 13:14:00,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:14:00,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:14:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:14:00,314 INFO L87 Difference]: Start difference. First operand 13817 states and 18999 transitions. Second operand 7 states. [2020-12-22 13:14:04,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:04,744 INFO L93 Difference]: Finished difference Result 57927 states and 80008 transitions. [2020-12-22 13:14:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:14:04,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-12-22 13:14:04,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:04,804 INFO L225 Difference]: With dead ends: 57927 [2020-12-22 13:14:04,805 INFO L226 Difference]: Without dead ends: 44134 [2020-12-22 13:14:04,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:14:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44134 states. [2020-12-22 13:14:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44134 to 13168. [2020-12-22 13:14:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13168 states. [2020-12-22 13:14:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13168 states to 13168 states and 18026 transitions. [2020-12-22 13:14:06,623 INFO L78 Accepts]: Start accepts. Automaton has 13168 states and 18026 transitions. Word has length 112 [2020-12-22 13:14:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:06,623 INFO L481 AbstractCegarLoop]: Abstraction has 13168 states and 18026 transitions. [2020-12-22 13:14:06,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:14:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13168 states and 18026 transitions. [2020-12-22 13:14:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 13:14:06,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:06,634 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:14:06,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 13:14:06,635 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:06,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1740924070, now seen corresponding path program 1 times [2020-12-22 13:14:06,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:06,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914962396] [2020-12-22 13:14:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:14:06,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914962396] [2020-12-22 13:14:06,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:06,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:14:06,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565235344] [2020-12-22 13:14:06,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:14:06,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:14:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:06,812 INFO L87 Difference]: Start difference. First operand 13168 states and 18026 transitions. Second operand 3 states. [2020-12-22 13:14:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:07,834 INFO L93 Difference]: Finished difference Result 20096 states and 27608 transitions. [2020-12-22 13:14:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:14:07,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 13:14:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:07,841 INFO L225 Difference]: With dead ends: 20096 [2020-12-22 13:14:07,841 INFO L226 Difference]: Without dead ends: 6103 [2020-12-22 13:14:07,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6103 states. [2020-12-22 13:14:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6103 to 5009. [2020-12-22 13:14:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5009 states. [2020-12-22 13:14:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 6778 transitions. [2020-12-22 13:14:08,316 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 6778 transitions. Word has length 116 [2020-12-22 13:14:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:08,317 INFO L481 AbstractCegarLoop]: Abstraction has 5009 states and 6778 transitions. [2020-12-22 13:14:08,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:14:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 6778 transitions. [2020-12-22 13:14:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 13:14:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:08,321 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-12-22 13:14:08,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 13:14:08,322 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash -180779501, now seen corresponding path program 1 times [2020-12-22 13:14:08,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:08,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774947153] [2020-12-22 13:14:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:14:08,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774947153] [2020-12-22 13:14:08,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:08,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:14:08,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730444164] [2020-12-22 13:14:08,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:14:08,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:08,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:14:08,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:08,458 INFO L87 Difference]: Start difference. First operand 5009 states and 6778 transitions. Second operand 3 states. [2020-12-22 13:14:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:09,036 INFO L93 Difference]: Finished difference Result 9204 states and 12556 transitions. [2020-12-22 13:14:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:14:09,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 13:14:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:09,043 INFO L225 Difference]: With dead ends: 9204 [2020-12-22 13:14:09,043 INFO L226 Difference]: Without dead ends: 4807 [2020-12-22 13:14:09,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2020-12-22 13:14:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4745. [2020-12-22 13:14:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4745 states. [2020-12-22 13:14:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6402 transitions. [2020-12-22 13:14:09,481 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6402 transitions. Word has length 118 [2020-12-22 13:14:09,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:09,481 INFO L481 AbstractCegarLoop]: Abstraction has 4745 states and 6402 transitions. [2020-12-22 13:14:09,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:14:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6402 transitions. [2020-12-22 13:14:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 13:14:09,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:09,486 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:09,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 13:14:09,486 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:09,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1700147490, now seen corresponding path program 1 times [2020-12-22 13:14:09,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:09,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962318532] [2020-12-22 13:14:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 13:14:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962318532] [2020-12-22 13:14:09,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:09,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:14:09,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412149040] [2020-12-22 13:14:09,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:14:09,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:14:09,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:09,624 INFO L87 Difference]: Start difference. First operand 4745 states and 6402 transitions. Second operand 3 states. [2020-12-22 13:14:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:10,353 INFO L93 Difference]: Finished difference Result 11292 states and 15420 transitions. [2020-12-22 13:14:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:14:10,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 13:14:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:10,360 INFO L225 Difference]: With dead ends: 11292 [2020-12-22 13:14:10,361 INFO L226 Difference]: Without dead ends: 6571 [2020-12-22 13:14:10,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2020-12-22 13:14:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 6558. [2020-12-22 13:14:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6558 states. [2020-12-22 13:14:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 8866 transitions. [2020-12-22 13:14:10,819 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 8866 transitions. Word has length 127 [2020-12-22 13:14:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:10,819 INFO L481 AbstractCegarLoop]: Abstraction has 6558 states and 8866 transitions. [2020-12-22 13:14:10,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:14:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 8866 transitions. [2020-12-22 13:14:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 13:14:10,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:10,823 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:10,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 13:14:10,824 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash -927726502, now seen corresponding path program 1 times [2020-12-22 13:14:10,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:10,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765785947] [2020-12-22 13:14:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:14:10,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765785947] [2020-12-22 13:14:10,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:10,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:14:10,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365931484] [2020-12-22 13:14:10,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:14:10,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:10,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:14:10,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:14:10,982 INFO L87 Difference]: Start difference. First operand 6558 states and 8866 transitions. Second operand 4 states. [2020-12-22 13:14:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:11,875 INFO L93 Difference]: Finished difference Result 17402 states and 23642 transitions. [2020-12-22 13:14:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:14:11,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-22 13:14:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:11,887 INFO L225 Difference]: With dead ends: 17402 [2020-12-22 13:14:11,887 INFO L226 Difference]: Without dead ends: 10810 [2020-12-22 13:14:11,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 13:14:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10810 states. [2020-12-22 13:14:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10810 to 6558. [2020-12-22 13:14:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6558 states. [2020-12-22 13:14:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 8837 transitions. [2020-12-22 13:14:12,390 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 8837 transitions. Word has length 127 [2020-12-22 13:14:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:12,391 INFO L481 AbstractCegarLoop]: Abstraction has 6558 states and 8837 transitions. [2020-12-22 13:14:12,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:14:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 8837 transitions. [2020-12-22 13:14:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 13:14:12,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:12,394 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:12,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 13:14:12,395 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:12,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1729926998, now seen corresponding path program 1 times [2020-12-22 13:14:12,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:12,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037616259] [2020-12-22 13:14:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:14:12,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037616259] [2020-12-22 13:14:12,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:12,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:14:12,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951962544] [2020-12-22 13:14:12,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:14:12,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:12,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:14:12,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:14:12,574 INFO L87 Difference]: Start difference. First operand 6558 states and 8837 transitions. Second operand 7 states. [2020-12-22 13:14:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:14,978 INFO L93 Difference]: Finished difference Result 39464 states and 54015 transitions. [2020-12-22 13:14:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:14:14,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-12-22 13:14:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:15,015 INFO L225 Difference]: With dead ends: 39464 [2020-12-22 13:14:15,015 INFO L226 Difference]: Without dead ends: 32930 [2020-12-22 13:14:15,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:14:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32930 states. [2020-12-22 13:14:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32930 to 6703. [2020-12-22 13:14:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6703 states. [2020-12-22 13:14:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6703 states to 6703 states and 8982 transitions. [2020-12-22 13:14:15,834 INFO L78 Accepts]: Start accepts. Automaton has 6703 states and 8982 transitions. Word has length 129 [2020-12-22 13:14:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:15,834 INFO L481 AbstractCegarLoop]: Abstraction has 6703 states and 8982 transitions. [2020-12-22 13:14:15,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:14:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 6703 states and 8982 transitions. [2020-12-22 13:14:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 13:14:15,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:15,838 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:15,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 13:14:15,839 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1559724230, now seen corresponding path program 1 times [2020-12-22 13:14:15,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:15,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165844525] [2020-12-22 13:14:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 13:14:16,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165844525] [2020-12-22 13:14:16,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:16,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 13:14:16,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598196913] [2020-12-22 13:14:16,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 13:14:16,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:16,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 13:14:16,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 13:14:16,634 INFO L87 Difference]: Start difference. First operand 6703 states and 8982 transitions. Second operand 19 states. [2020-12-22 13:14:21,079 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-22 13:14:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:45,174 INFO L93 Difference]: Finished difference Result 94390 states and 130165 transitions. [2020-12-22 13:14:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2020-12-22 13:14:45,174 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 131 [2020-12-22 13:14:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:45,288 INFO L225 Difference]: With dead ends: 94390 [2020-12-22 13:14:45,289 INFO L226 Difference]: Without dead ends: 88501 [2020-12-22 13:14:45,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39887 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=11374, Invalid=82568, Unknown=0, NotChecked=0, Total=93942 [2020-12-22 13:14:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88501 states. [2020-12-22 13:14:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88501 to 9132. [2020-12-22 13:14:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9132 states. [2020-12-22 13:14:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 12229 transitions. [2020-12-22 13:14:47,414 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 12229 transitions. Word has length 131 [2020-12-22 13:14:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:47,415 INFO L481 AbstractCegarLoop]: Abstraction has 9132 states and 12229 transitions. [2020-12-22 13:14:47,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 13:14:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 12229 transitions. [2020-12-22 13:14:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 13:14:47,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:47,420 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:47,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 13:14:47,420 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2079661250, now seen corresponding path program 1 times [2020-12-22 13:14:47,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:47,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409717851] [2020-12-22 13:14:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:14:47,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409717851] [2020-12-22 13:14:47,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:47,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:14:47,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141522621] [2020-12-22 13:14:47,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:14:47,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:47,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:14:47,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:47,528 INFO L87 Difference]: Start difference. First operand 9132 states and 12229 transitions. Second operand 3 states. [2020-12-22 13:14:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:48,870 INFO L93 Difference]: Finished difference Result 17738 states and 23936 transitions. [2020-12-22 13:14:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:14:48,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 13:14:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:48,879 INFO L225 Difference]: With dead ends: 17738 [2020-12-22 13:14:48,880 INFO L226 Difference]: Without dead ends: 8630 [2020-12-22 13:14:48,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:14:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2020-12-22 13:14:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 8396. [2020-12-22 13:14:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8396 states. [2020-12-22 13:14:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 11252 transitions. [2020-12-22 13:14:49,927 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 11252 transitions. Word has length 131 [2020-12-22 13:14:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:49,927 INFO L481 AbstractCegarLoop]: Abstraction has 8396 states and 11252 transitions. [2020-12-22 13:14:49,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:14:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 11252 transitions. [2020-12-22 13:14:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 13:14:49,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:49,930 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:49,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 13:14:49,931 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash 2025495712, now seen corresponding path program 1 times [2020-12-22 13:14:49,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:49,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960918081] [2020-12-22 13:14:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:14:50,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960918081] [2020-12-22 13:14:50,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:14:50,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:14:50,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371796086] [2020-12-22 13:14:50,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:14:50,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:14:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:14:50,286 INFO L87 Difference]: Start difference. First operand 8396 states and 11252 transitions. Second operand 8 states. [2020-12-22 13:14:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:52,656 INFO L93 Difference]: Finished difference Result 20375 states and 27243 transitions. [2020-12-22 13:14:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:14:52,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-12-22 13:14:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:52,673 INFO L225 Difference]: With dead ends: 20375 [2020-12-22 13:14:52,673 INFO L226 Difference]: Without dead ends: 13130 [2020-12-22 13:14:52,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:14:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13130 states. [2020-12-22 13:14:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13130 to 8396. [2020-12-22 13:14:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8396 states. [2020-12-22 13:14:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 11236 transitions. [2020-12-22 13:14:53,850 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 11236 transitions. Word has length 133 [2020-12-22 13:14:53,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:53,850 INFO L481 AbstractCegarLoop]: Abstraction has 8396 states and 11236 transitions. [2020-12-22 13:14:53,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:14:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 11236 transitions. [2020-12-22 13:14:53,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 13:14:53,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:53,854 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-12-22 13:14:53,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 13:14:53,855 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:53,855 INFO L82 PathProgramCache]: Analyzing trace with hash -439141703, now seen corresponding path program 1 times [2020-12-22 13:14:53,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:53,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892835582] [2020-12-22 13:14:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:14:54,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892835582] [2020-12-22 13:14:54,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576416833] [2020-12-22 13:14:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:14:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:54,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:14:54,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:14:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:14:54,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:14:54,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-12-22 13:14:54,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900198552] [2020-12-22 13:14:54,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:14:54,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:14:54,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:14:54,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:14:54,865 INFO L87 Difference]: Start difference. First operand 8396 states and 11236 transitions. Second operand 5 states. [2020-12-22 13:14:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:14:58,033 INFO L93 Difference]: Finished difference Result 28583 states and 38054 transitions. [2020-12-22 13:14:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:14:58,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-22 13:14:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:14:58,057 INFO L225 Difference]: With dead ends: 28583 [2020-12-22 13:14:58,057 INFO L226 Difference]: Without dead ends: 22788 [2020-12-22 13:14:58,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:14:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22788 states. [2020-12-22 13:14:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22788 to 8732. [2020-12-22 13:14:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8732 states. [2020-12-22 13:14:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8732 states to 8732 states and 11716 transitions. [2020-12-22 13:14:59,368 INFO L78 Accepts]: Start accepts. Automaton has 8732 states and 11716 transitions. Word has length 143 [2020-12-22 13:14:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:14:59,368 INFO L481 AbstractCegarLoop]: Abstraction has 8732 states and 11716 transitions. [2020-12-22 13:14:59,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:14:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8732 states and 11716 transitions. [2020-12-22 13:14:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:14:59,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:14:59,372 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:14:59,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 13:14:59,574 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:14:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:14:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1401355552, now seen corresponding path program 1 times [2020-12-22 13:14:59,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:14:59,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752806713] [2020-12-22 13:14:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:14:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:14:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:14:59,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752806713] [2020-12-22 13:14:59,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209206467] [2020-12-22 13:14:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:00,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:15:00,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:15:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:00,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:15:00,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-22 13:15:00,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954382020] [2020-12-22 13:15:00,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:15:00,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:15:00,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:15:00,453 INFO L87 Difference]: Start difference. First operand 8732 states and 11716 transitions. Second operand 7 states. [2020-12-22 13:15:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:02,966 INFO L93 Difference]: Finished difference Result 22975 states and 30819 transitions. [2020-12-22 13:15:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:15:02,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-12-22 13:15:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:02,986 INFO L225 Difference]: With dead ends: 22975 [2020-12-22 13:15:02,986 INFO L226 Difference]: Without dead ends: 15394 [2020-12-22 13:15:02,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:15:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15394 states. [2020-12-22 13:15:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15394 to 8764. [2020-12-22 13:15:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8764 states. [2020-12-22 13:15:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8764 states to 8764 states and 11748 transitions. [2020-12-22 13:15:04,328 INFO L78 Accepts]: Start accepts. Automaton has 8764 states and 11748 transitions. Word has length 148 [2020-12-22 13:15:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:04,328 INFO L481 AbstractCegarLoop]: Abstraction has 8764 states and 11748 transitions. [2020-12-22 13:15:04,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:15:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8764 states and 11748 transitions. [2020-12-22 13:15:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:15:04,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:04,332 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:15:04,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:04,533 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:04,534 INFO L82 PathProgramCache]: Analyzing trace with hash -97134882, now seen corresponding path program 1 times [2020-12-22 13:15:04,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:04,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118525159] [2020-12-22 13:15:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:04,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118525159] [2020-12-22 13:15:04,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:15:04,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:15:04,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781541381] [2020-12-22 13:15:04,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:15:04,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:04,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:15:04,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:15:04,705 INFO L87 Difference]: Start difference. First operand 8764 states and 11748 transitions. Second operand 4 states. [2020-12-22 13:15:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:07,244 INFO L93 Difference]: Finished difference Result 22054 states and 29500 transitions. [2020-12-22 13:15:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:15:07,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-12-22 13:15:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:07,266 INFO L225 Difference]: With dead ends: 22054 [2020-12-22 13:15:07,266 INFO L226 Difference]: Without dead ends: 14441 [2020-12-22 13:15:07,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:15:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14441 states. [2020-12-22 13:15:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14441 to 8764. [2020-12-22 13:15:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8764 states. [2020-12-22 13:15:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8764 states to 8764 states and 11716 transitions. [2020-12-22 13:15:08,755 INFO L78 Accepts]: Start accepts. Automaton has 8764 states and 11716 transitions. Word has length 148 [2020-12-22 13:15:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:08,756 INFO L481 AbstractCegarLoop]: Abstraction has 8764 states and 11716 transitions. [2020-12-22 13:15:08,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:15:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8764 states and 11716 transitions. [2020-12-22 13:15:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 13:15:08,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:08,759 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:15:08,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 13:15:08,760 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:08,761 INFO L82 PathProgramCache]: Analyzing trace with hash 559670454, now seen corresponding path program 1 times [2020-12-22 13:15:08,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:08,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244305863] [2020-12-22 13:15:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 13:15:08,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244305863] [2020-12-22 13:15:08,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:15:08,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:15:08,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342936699] [2020-12-22 13:15:08,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:15:08,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:08,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:15:08,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:15:08,934 INFO L87 Difference]: Start difference. First operand 8764 states and 11716 transitions. Second operand 3 states. [2020-12-22 13:15:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:10,333 INFO L93 Difference]: Finished difference Result 16382 states and 21911 transitions. [2020-12-22 13:15:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:15:10,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-22 13:15:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:10,342 INFO L225 Difference]: With dead ends: 16382 [2020-12-22 13:15:10,342 INFO L226 Difference]: Without dead ends: 8769 [2020-12-22 13:15:10,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:15:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8769 states. [2020-12-22 13:15:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8769 to 8652. [2020-12-22 13:15:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2020-12-22 13:15:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 11540 transitions. [2020-12-22 13:15:11,749 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 11540 transitions. Word has length 149 [2020-12-22 13:15:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:11,749 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 11540 transitions. [2020-12-22 13:15:11,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:15:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 11540 transitions. [2020-12-22 13:15:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 13:15:11,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:11,754 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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] [2020-12-22 13:15:11,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 13:15:11,754 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:11,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1155490122, now seen corresponding path program 1 times [2020-12-22 13:15:11,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:11,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704366734] [2020-12-22 13:15:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:15:12,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704366734] [2020-12-22 13:15:12,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676302080] [2020-12-22 13:15:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:13,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 13:15:13,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:15:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:15:13,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:15:13,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:15:13,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299557546] [2020-12-22 13:15:13,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:15:13,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:13,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:15:13,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:15:13,224 INFO L87 Difference]: Start difference. First operand 8652 states and 11540 transitions. Second operand 8 states. [2020-12-22 13:15:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:14,651 INFO L93 Difference]: Finished difference Result 15310 states and 20407 transitions. [2020-12-22 13:15:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:15:14,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-12-22 13:15:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:14,662 INFO L225 Difference]: With dead ends: 15310 [2020-12-22 13:15:14,662 INFO L226 Difference]: Without dead ends: 7809 [2020-12-22 13:15:14,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:15:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2020-12-22 13:15:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7692. [2020-12-22 13:15:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7692 states. [2020-12-22 13:15:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 10196 transitions. [2020-12-22 13:15:15,856 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 10196 transitions. Word has length 149 [2020-12-22 13:15:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:15,857 INFO L481 AbstractCegarLoop]: Abstraction has 7692 states and 10196 transitions. [2020-12-22 13:15:15,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:15:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 10196 transitions. [2020-12-22 13:15:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 13:15:15,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:15,860 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:15:16,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:16,062 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:16,063 INFO L82 PathProgramCache]: Analyzing trace with hash 443823566, now seen corresponding path program 2 times [2020-12-22 13:15:16,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:16,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178995693] [2020-12-22 13:15:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:15:16,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178995693] [2020-12-22 13:15:16,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866949140] [2020-12-22 13:15:16,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:17,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:15:17,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:15:17,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 13:15:17,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:15:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:15:17,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:15:17,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 13:15:17,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543692242] [2020-12-22 13:15:17,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:15:17,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:17,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:15:17,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:15:17,534 INFO L87 Difference]: Start difference. First operand 7692 states and 10196 transitions. Second operand 10 states. [2020-12-22 13:15:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:19,085 INFO L93 Difference]: Finished difference Result 14366 states and 19063 transitions. [2020-12-22 13:15:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:15:19,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-12-22 13:15:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:19,094 INFO L225 Difference]: With dead ends: 14366 [2020-12-22 13:15:19,094 INFO L226 Difference]: Without dead ends: 7825 [2020-12-22 13:15:19,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:15:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7825 states. [2020-12-22 13:15:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7825 to 7708. [2020-12-22 13:15:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7708 states. [2020-12-22 13:15:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 10212 transitions. [2020-12-22 13:15:20,290 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 10212 transitions. Word has length 150 [2020-12-22 13:15:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:20,291 INFO L481 AbstractCegarLoop]: Abstraction has 7708 states and 10212 transitions. [2020-12-22 13:15:20,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:15:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 10212 transitions. [2020-12-22 13:15:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 13:15:20,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:20,293 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2020-12-22 13:15:20,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:20,495 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:20,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1517059658, now seen corresponding path program 3 times [2020-12-22 13:15:20,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:20,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150632508] [2020-12-22 13:15:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 13:15:20,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150632508] [2020-12-22 13:15:20,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688120976] [2020-12-22 13:15:20,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:22,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 13:15:22,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:15:22,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:15:22,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:15:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:15:22,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:15:22,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-12-22 13:15:22,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725936641] [2020-12-22 13:15:22,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 13:15:22,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:22,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 13:15:22,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:15:22,270 INFO L87 Difference]: Start difference. First operand 7708 states and 10212 transitions. Second operand 11 states. [2020-12-22 13:15:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:23,790 INFO L93 Difference]: Finished difference Result 14418 states and 19131 transitions. [2020-12-22 13:15:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:15:23,792 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-12-22 13:15:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:23,801 INFO L225 Difference]: With dead ends: 14418 [2020-12-22 13:15:23,802 INFO L226 Difference]: Without dead ends: 7861 [2020-12-22 13:15:23,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:15:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2020-12-22 13:15:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 7740. [2020-12-22 13:15:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7740 states. [2020-12-22 13:15:24,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 10244 transitions. [2020-12-22 13:15:24,919 INFO L78 Accepts]: Start accepts. Automaton has 7740 states and 10244 transitions. Word has length 151 [2020-12-22 13:15:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:24,919 INFO L481 AbstractCegarLoop]: Abstraction has 7740 states and 10244 transitions. [2020-12-22 13:15:24,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 13:15:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7740 states and 10244 transitions. [2020-12-22 13:15:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 13:15:24,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:24,922 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:15:25,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 13:15:25,124 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 683102328, now seen corresponding path program 4 times [2020-12-22 13:15:25,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:25,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719931800] [2020-12-22 13:15:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:25,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719931800] [2020-12-22 13:15:25,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661460689] [2020-12-22 13:15:25,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:29,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 13:15:29,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:15:29,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2062 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:15:29,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:15:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:29,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:15:29,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-12-22 13:15:29,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672980638] [2020-12-22 13:15:29,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 13:15:29,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 13:15:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:15:29,954 INFO L87 Difference]: Start difference. First operand 7740 states and 10244 transitions. Second operand 12 states. [2020-12-22 13:15:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:31,360 INFO L93 Difference]: Finished difference Result 14377 states and 19048 transitions. [2020-12-22 13:15:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:15:31,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-12-22 13:15:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:31,368 INFO L225 Difference]: With dead ends: 14377 [2020-12-22 13:15:31,369 INFO L226 Difference]: Without dead ends: 7756 [2020-12-22 13:15:31,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:15:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7756 states. [2020-12-22 13:15:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7756 to 7756. [2020-12-22 13:15:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7756 states. [2020-12-22 13:15:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 10260 transitions. [2020-12-22 13:15:32,489 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 10260 transitions. Word has length 153 [2020-12-22 13:15:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:32,490 INFO L481 AbstractCegarLoop]: Abstraction has 7756 states and 10260 transitions. [2020-12-22 13:15:32,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 13:15:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 10260 transitions. [2020-12-22 13:15:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 13:15:32,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:32,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:15:32,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 13:15:32,700 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:32,701 INFO L82 PathProgramCache]: Analyzing trace with hash -138830960, now seen corresponding path program 5 times [2020-12-22 13:15:32,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:32,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708276311] [2020-12-22 13:15:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:32,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708276311] [2020-12-22 13:15:32,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834887808] [2020-12-22 13:15:32,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:15:42,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-22 13:15:42,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:15:42,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:15:42,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:15:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:42,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:15:42,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2020-12-22 13:15:42,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477463569] [2020-12-22 13:15:42,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 13:15:42,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:15:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 13:15:42,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:15:42,465 INFO L87 Difference]: Start difference. First operand 7756 states and 10260 transitions. Second operand 13 states. [2020-12-22 13:15:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:15:43,877 INFO L93 Difference]: Finished difference Result 14409 states and 19080 transitions. [2020-12-22 13:15:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:15:43,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-12-22 13:15:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:15:43,886 INFO L225 Difference]: With dead ends: 14409 [2020-12-22 13:15:43,886 INFO L226 Difference]: Without dead ends: 7772 [2020-12-22 13:15:43,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:15:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2020-12-22 13:15:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 7772. [2020-12-22 13:15:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7772 states. [2020-12-22 13:15:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 10276 transitions. [2020-12-22 13:15:44,996 INFO L78 Accepts]: Start accepts. Automaton has 7772 states and 10276 transitions. Word has length 154 [2020-12-22 13:15:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:15:44,996 INFO L481 AbstractCegarLoop]: Abstraction has 7772 states and 10276 transitions. [2020-12-22 13:15:44,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 13:15:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7772 states and 10276 transitions. [2020-12-22 13:15:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 13:15:44,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:15:44,999 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:15:45,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 13:15:45,200 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:15:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:15:45,202 INFO L82 PathProgramCache]: Analyzing trace with hash 151040888, now seen corresponding path program 6 times [2020-12-22 13:15:45,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:15:45,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472839190] [2020-12-22 13:15:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:15:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:15:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:15:45,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472839190] [2020-12-22 13:15:45,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959010823] [2020-12-22 13:15:45,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:16:08,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-22 13:16:08,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:16:08,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 13:16:08,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:16:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:16:08,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:16:08,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2020-12-22 13:16:08,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671767529] [2020-12-22 13:16:08,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 13:16:08,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:16:08,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 13:16:08,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:16:08,938 INFO L87 Difference]: Start difference. First operand 7772 states and 10276 transitions. Second operand 14 states. [2020-12-22 13:16:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:16:10,286 INFO L93 Difference]: Finished difference Result 14441 states and 19112 transitions. [2020-12-22 13:16:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:16:10,286 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-12-22 13:16:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:16:10,295 INFO L225 Difference]: With dead ends: 14441 [2020-12-22 13:16:10,296 INFO L226 Difference]: Without dead ends: 7788 [2020-12-22 13:16:10,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:16:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2020-12-22 13:16:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7788. [2020-12-22 13:16:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7788 states. [2020-12-22 13:16:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7788 states to 7788 states and 10292 transitions. [2020-12-22 13:16:11,513 INFO L78 Accepts]: Start accepts. Automaton has 7788 states and 10292 transitions. Word has length 155 [2020-12-22 13:16:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:16:11,514 INFO L481 AbstractCegarLoop]: Abstraction has 7788 states and 10292 transitions. [2020-12-22 13:16:11,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 13:16:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 7788 states and 10292 transitions. [2020-12-22 13:16:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 13:16:11,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:16:11,516 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:16:11,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:16:11,717 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:16:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:16:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 547133584, now seen corresponding path program 7 times [2020-12-22 13:16:11,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:16:11,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894540688] [2020-12-22 13:16:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:16:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:16:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:16:11,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894540688] [2020-12-22 13:16:11,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013431813] [2020-12-22 13:16:11,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:16:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:16:12,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 13:16:12,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:16:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:16:12,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:16:12,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2020-12-22 13:16:12,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351123058] [2020-12-22 13:16:12,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 13:16:12,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:16:12,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 13:16:12,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:16:12,774 INFO L87 Difference]: Start difference. First operand 7788 states and 10292 transitions. Second operand 15 states. [2020-12-22 13:16:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:16:14,221 INFO L93 Difference]: Finished difference Result 14473 states and 19144 transitions. [2020-12-22 13:16:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 13:16:14,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 156 [2020-12-22 13:16:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:16:14,230 INFO L225 Difference]: With dead ends: 14473 [2020-12-22 13:16:14,230 INFO L226 Difference]: Without dead ends: 7804 [2020-12-22 13:16:14,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-12-22 13:16:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2020-12-22 13:16:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 7804. [2020-12-22 13:16:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7804 states. [2020-12-22 13:16:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7804 states to 7804 states and 10308 transitions. [2020-12-22 13:16:15,449 INFO L78 Accepts]: Start accepts. Automaton has 7804 states and 10308 transitions. Word has length 156 [2020-12-22 13:16:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:16:15,449 INFO L481 AbstractCegarLoop]: Abstraction has 7804 states and 10308 transitions. [2020-12-22 13:16:15,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 13:16:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7804 states and 10308 transitions. [2020-12-22 13:16:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 13:16:15,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:16:15,452 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:16:15,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-22 13:16:15,656 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:16:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:16:15,656 INFO L82 PathProgramCache]: Analyzing trace with hash -58894728, now seen corresponding path program 8 times [2020-12-22 13:16:15,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:16:15,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688666089] [2020-12-22 13:16:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:16:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:16:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:16:15,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688666089] [2020-12-22 13:16:15,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871507882] [2020-12-22 13:16:15,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:16:16,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:16:16,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:16:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 13:16:16,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:16:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:16:16,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:16:16,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 16 [2020-12-22 13:16:16,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738272324] [2020-12-22 13:16:16,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 13:16:16,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:16:16,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 13:16:16,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:16:16,923 INFO L87 Difference]: Start difference. First operand 7804 states and 10308 transitions. Second operand 16 states. [2020-12-22 13:16:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:16:18,311 INFO L93 Difference]: Finished difference Result 14626 states and 19323 transitions. [2020-12-22 13:16:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 13:16:18,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-12-22 13:16:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:16:18,320 INFO L225 Difference]: With dead ends: 14626 [2020-12-22 13:16:18,320 INFO L226 Difference]: Without dead ends: 7941 [2020-12-22 13:16:18,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:16:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2020-12-22 13:16:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 7820. [2020-12-22 13:16:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7820 states. [2020-12-22 13:16:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 10324 transitions. [2020-12-22 13:16:19,451 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 10324 transitions. Word has length 157 [2020-12-22 13:16:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:16:19,451 INFO L481 AbstractCegarLoop]: Abstraction has 7820 states and 10324 transitions. [2020-12-22 13:16:19,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 13:16:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 10324 transitions. [2020-12-22 13:16:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 13:16:19,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:16:19,453 INFO L422 BasicCegarLoop]: trace histogram [9, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:16:19,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-22 13:16:19,655 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:16:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:16:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1665903216, now seen corresponding path program 9 times [2020-12-22 13:16:19,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:16:19,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032682684] [2020-12-22 13:16:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:16:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:16:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 13:16:20,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032682684] [2020-12-22 13:16:20,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968632274] [2020-12-22 13:16:20,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true