/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:14:28,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:14:28,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:14:28,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:14:28,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:14:28,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:14:28,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:14:28,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:14:28,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:14:28,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:14:28,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:14:28,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:14:28,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:14:28,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:14:28,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:14:28,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:14:28,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:14:28,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:14:28,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:14:28,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:14:28,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:14:28,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:14:28,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:14:28,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:14:28,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:14:28,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:14:28,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:14:28,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:14:28,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:14:28,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:14:28,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:14:28,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:14:28,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:14:28,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:14:28,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:14:28,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:14:28,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:14:28,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:14:28,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:14:28,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:14:28,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:14:28,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:14:28,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:14:28,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:14:28,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:14:28,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:14:28,908 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:14:28,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:14:28,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:14:28,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:14:28,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:14:28,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:14:28,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:14:28,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:14:28,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:14:28,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:14:28,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:14:28,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:14:28,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:14:28,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:14:28,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:14:28,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:14:28,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:14:28,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:14:28,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:14:28,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:14:28,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:14:28,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:14:29,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:14:29,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:14:29,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:14:29,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:14:29,428 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:14:29,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2020-12-22 14:14:29,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9314ba6a3/97e2af9dbd044ab8b2def690cc341ce4/FLAG2f72bc7be [2020-12-22 14:14:30,674 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:14:30,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2020-12-22 14:14:30,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9314ba6a3/97e2af9dbd044ab8b2def690cc341ce4/FLAG2f72bc7be [2020-12-22 14:14:31,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9314ba6a3/97e2af9dbd044ab8b2def690cc341ce4 [2020-12-22 14:14:31,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:14:31,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:14:31,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:14:31,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:14:31,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:14:31,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:14:31" (1/1) ... [2020-12-22 14:14:31,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4884990b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:31, skipping insertion in model container [2020-12-22 14:14:31,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:14:31" (1/1) ... [2020-12-22 14:14:31,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:14:31,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:14:33,675 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2020-12-22 14:14:33,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:14:33,872 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:14:34,506 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2020-12-22 14:14:34,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:14:35,043 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:14:35,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35 WrapperNode [2020-12-22 14:14:35,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:14:35,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:14:35,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:14:35,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:14:35,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:35,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:36,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:14:36,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:14:36,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:14:36,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:14:36,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:36,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:37,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:37,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:39,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:39,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:39,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... [2020-12-22 14:14:39,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:14:39,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:14:39,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:14:39,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:14:39,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:14:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2020-12-22 14:14:40,062 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2020-12-22 14:14:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:14:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:14:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2020-12-22 14:14:40,063 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2020-12-22 14:14:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2020-12-22 14:14:40,064 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2020-12-22 14:14:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:14:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 14:14:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:14:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:14:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:14:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2020-12-22 14:14:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2020-12-22 14:14:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:14:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:14:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:14:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2020-12-22 14:14:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2020-12-22 14:14:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:14:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2020-12-22 14:14:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2020-12-22 14:14:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:14:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:14:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 14:14:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 14:14:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2020-12-22 14:14:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2020-12-22 14:14:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:14:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:14:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:16:17,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:16:17,567 INFO L299 CfgBuilder]: Removed 3636 assume(true) statements. [2020-12-22 14:16:17,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:16:17 BoogieIcfgContainer [2020-12-22 14:16:17,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:16:17,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:16:17,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:16:17,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:16:17,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:14:31" (1/3) ... [2020-12-22 14:16:17,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13727255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:16:17, skipping insertion in model container [2020-12-22 14:16:17,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:14:35" (2/3) ... [2020-12-22 14:16:17,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13727255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:16:17, skipping insertion in model container [2020-12-22 14:16:17,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:16:17" (3/3) ... [2020-12-22 14:16:17,588 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2020-12-22 14:16:17,596 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:16:17,606 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-12-22 14:16:17,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-12-22 14:16:17,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:16:17,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:16:17,686 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:16:17,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:16:17,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:16:17,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:16:17,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:16:17,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:16:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9053 states. [2020-12-22 14:16:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 14:16:17,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:17,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:17,878 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:17,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1693502438, now seen corresponding path program 1 times [2020-12-22 14:16:17,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:17,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300377444] [2020-12-22 14:16:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:18,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300377444] [2020-12-22 14:16:18,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:18,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:16:18,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346467515] [2020-12-22 14:16:18,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:16:18,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:18,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:16:18,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:16:18,681 INFO L87 Difference]: Start difference. First operand 9053 states. Second operand 2 states. [2020-12-22 14:16:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:19,167 INFO L93 Difference]: Finished difference Result 18102 states and 27928 transitions. [2020-12-22 14:16:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:16:19,169 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 156 [2020-12-22 14:16:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:19,272 INFO L225 Difference]: With dead ends: 18102 [2020-12-22 14:16:19,273 INFO L226 Difference]: Without dead ends: 9044 [2020-12-22 14:16:19,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:16:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2020-12-22 14:16:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 9044. [2020-12-22 14:16:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9044 states. [2020-12-22 14:16:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9044 states to 9044 states and 13811 transitions. [2020-12-22 14:16:19,757 INFO L78 Accepts]: Start accepts. Automaton has 9044 states and 13811 transitions. Word has length 156 [2020-12-22 14:16:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:19,758 INFO L481 AbstractCegarLoop]: Abstraction has 9044 states and 13811 transitions. [2020-12-22 14:16:19,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:16:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states and 13811 transitions. [2020-12-22 14:16:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 14:16:19,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:19,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:19,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:16:19,774 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:19,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1193637878, now seen corresponding path program 1 times [2020-12-22 14:16:19,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:19,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710395419] [2020-12-22 14:16:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:20,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710395419] [2020-12-22 14:16:20,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:20,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:16:20,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181547503] [2020-12-22 14:16:20,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:16:20,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:16:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:20,412 INFO L87 Difference]: Start difference. First operand 9044 states and 13811 transitions. Second operand 3 states. [2020-12-22 14:16:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:21,241 INFO L93 Difference]: Finished difference Result 26683 states and 40840 transitions. [2020-12-22 14:16:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:16:21,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 14:16:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:21,397 INFO L225 Difference]: With dead ends: 26683 [2020-12-22 14:16:21,397 INFO L226 Difference]: Without dead ends: 17777 [2020-12-22 14:16:21,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17777 states. [2020-12-22 14:16:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17777 to 17741. [2020-12-22 14:16:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17741 states. [2020-12-22 14:16:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27180 transitions. [2020-12-22 14:16:22,033 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27180 transitions. Word has length 156 [2020-12-22 14:16:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:22,037 INFO L481 AbstractCegarLoop]: Abstraction has 17741 states and 27180 transitions. [2020-12-22 14:16:22,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:16:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27180 transitions. [2020-12-22 14:16:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 14:16:22,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:22,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:22,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:16:22,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:22,053 INFO L82 PathProgramCache]: Analyzing trace with hash -857498354, now seen corresponding path program 1 times [2020-12-22 14:16:22,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:22,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253396467] [2020-12-22 14:16:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:22,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253396467] [2020-12-22 14:16:22,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:22,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:16:22,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380077389] [2020-12-22 14:16:22,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:16:22,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:16:22,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:22,776 INFO L87 Difference]: Start difference. First operand 17741 states and 27180 transitions. Second operand 3 states. [2020-12-22 14:16:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:23,760 INFO L93 Difference]: Finished difference Result 35346 states and 54191 transitions. [2020-12-22 14:16:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:16:23,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 14:16:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:23,836 INFO L225 Difference]: With dead ends: 35346 [2020-12-22 14:16:23,836 INFO L226 Difference]: Without dead ends: 17743 [2020-12-22 14:16:23,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17743 states. [2020-12-22 14:16:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17743 to 17742. [2020-12-22 14:16:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17742 states. [2020-12-22 14:16:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 27181 transitions. [2020-12-22 14:16:24,700 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 27181 transitions. Word has length 163 [2020-12-22 14:16:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:24,702 INFO L481 AbstractCegarLoop]: Abstraction has 17742 states and 27181 transitions. [2020-12-22 14:16:24,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:16:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 27181 transitions. [2020-12-22 14:16:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 14:16:24,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:24,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:24,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:16:24,709 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1755321742, now seen corresponding path program 1 times [2020-12-22 14:16:24,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:24,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012881725] [2020-12-22 14:16:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:25,133 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 14:16:25,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012881725] [2020-12-22 14:16:25,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340423199] [2020-12-22 14:16:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:16:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:27,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:16:27,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:16:27,374 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 14:16:27,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:16:27,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 14:16:27,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518351677] [2020-12-22 14:16:27,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:16:27,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:27,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:16:27,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:27,377 INFO L87 Difference]: Start difference. First operand 17742 states and 27181 transitions. Second operand 3 states. [2020-12-22 14:16:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:28,487 INFO L93 Difference]: Finished difference Result 52911 states and 81161 transitions. [2020-12-22 14:16:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:16:28,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 14:16:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:28,639 INFO L225 Difference]: With dead ends: 52911 [2020-12-22 14:16:28,639 INFO L226 Difference]: Without dead ends: 35303 [2020-12-22 14:16:28,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35303 states. [2020-12-22 14:16:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35303 to 35247. [2020-12-22 14:16:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35247 states. [2020-12-22 14:16:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35247 states to 35247 states and 54070 transitions. [2020-12-22 14:16:30,114 INFO L78 Accepts]: Start accepts. Automaton has 35247 states and 54070 transitions. Word has length 165 [2020-12-22 14:16:30,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:30,115 INFO L481 AbstractCegarLoop]: Abstraction has 35247 states and 54070 transitions. [2020-12-22 14:16:30,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:16:30,116 INFO L276 IsEmpty]: Start isEmpty. Operand 35247 states and 54070 transitions. [2020-12-22 14:16:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 14:16:30,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:30,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:30,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:16:30,355 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash 146817921, now seen corresponding path program 1 times [2020-12-22 14:16:30,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:30,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993452079] [2020-12-22 14:16:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:30,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993452079] [2020-12-22 14:16:30,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:30,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:16:30,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748010882] [2020-12-22 14:16:30,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:16:30,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:30,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:16:30,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:30,761 INFO L87 Difference]: Start difference. First operand 35247 states and 54070 transitions. Second operand 3 states. [2020-12-22 14:16:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:32,407 INFO L93 Difference]: Finished difference Result 96477 states and 148043 transitions. [2020-12-22 14:16:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:16:32,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-22 14:16:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:32,671 INFO L225 Difference]: With dead ends: 96477 [2020-12-22 14:16:32,671 INFO L226 Difference]: Without dead ends: 61368 [2020-12-22 14:16:32,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61368 states. [2020-12-22 14:16:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61368 to 61347. [2020-12-22 14:16:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61347 states. [2020-12-22 14:16:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61347 states to 61347 states and 94126 transitions. [2020-12-22 14:16:34,784 INFO L78 Accepts]: Start accepts. Automaton has 61347 states and 94126 transitions. Word has length 175 [2020-12-22 14:16:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:34,785 INFO L481 AbstractCegarLoop]: Abstraction has 61347 states and 94126 transitions. [2020-12-22 14:16:34,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:16:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61347 states and 94126 transitions. [2020-12-22 14:16:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 14:16:34,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:34,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:34,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:16:34,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:34,799 INFO L82 PathProgramCache]: Analyzing trace with hash 731096779, now seen corresponding path program 1 times [2020-12-22 14:16:34,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:34,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759908509] [2020-12-22 14:16:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:35,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759908509] [2020-12-22 14:16:35,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:35,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:16:35,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157489719] [2020-12-22 14:16:35,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:16:35,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:35,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:16:35,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:35,338 INFO L87 Difference]: Start difference. First operand 61347 states and 94126 transitions. Second operand 3 states. [2020-12-22 14:16:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:39,240 INFO L93 Difference]: Finished difference Result 141459 states and 217017 transitions. [2020-12-22 14:16:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:16:39,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2020-12-22 14:16:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:39,592 INFO L225 Difference]: With dead ends: 141459 [2020-12-22 14:16:39,592 INFO L226 Difference]: Without dead ends: 80250 [2020-12-22 14:16:39,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:16:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80250 states. [2020-12-22 14:16:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80250 to 80199. [2020-12-22 14:16:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80199 states. [2020-12-22 14:16:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80199 states to 80199 states and 123020 transitions. [2020-12-22 14:16:42,126 INFO L78 Accepts]: Start accepts. Automaton has 80199 states and 123020 transitions. Word has length 178 [2020-12-22 14:16:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:42,127 INFO L481 AbstractCegarLoop]: Abstraction has 80199 states and 123020 transitions. [2020-12-22 14:16:42,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:16:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 80199 states and 123020 transitions. [2020-12-22 14:16:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 14:16:42,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:42,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:42,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:16:42,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:42,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:42,142 INFO L82 PathProgramCache]: Analyzing trace with hash 72115822, now seen corresponding path program 1 times [2020-12-22 14:16:42,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:42,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910916471] [2020-12-22 14:16:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:42,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910916471] [2020-12-22 14:16:42,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488719553] [2020-12-22 14:16:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:16:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:44,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:16:44,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:16:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 14:16:45,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:16:45,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 14:16:45,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773090412] [2020-12-22 14:16:45,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:16:45,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:16:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:45,057 INFO L87 Difference]: Start difference. First operand 80199 states and 123020 transitions. Second operand 3 states. [2020-12-22 14:16:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:47,301 INFO L93 Difference]: Finished difference Result 225863 states and 346714 transitions. [2020-12-22 14:16:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:16:47,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-22 14:16:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:48,073 INFO L225 Difference]: With dead ends: 225863 [2020-12-22 14:16:48,074 INFO L226 Difference]: Without dead ends: 145802 [2020-12-22 14:16:48,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145802 states. [2020-12-22 14:16:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145802 to 80215. [2020-12-22 14:16:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80215 states. [2020-12-22 14:16:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80215 states to 80215 states and 123036 transitions. [2020-12-22 14:16:50,974 INFO L78 Accepts]: Start accepts. Automaton has 80215 states and 123036 transitions. Word has length 197 [2020-12-22 14:16:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:50,975 INFO L481 AbstractCegarLoop]: Abstraction has 80215 states and 123036 transitions. [2020-12-22 14:16:50,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:16:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 80215 states and 123036 transitions. [2020-12-22 14:16:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 14:16:50,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:50,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:51,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:16:51,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash -778676785, now seen corresponding path program 1 times [2020-12-22 14:16:51,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:51,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591691785] [2020-12-22 14:16:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:51,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591691785] [2020-12-22 14:16:51,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120544108] [2020-12-22 14:16:51,834 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 14:16:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:53,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:16:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:16:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:54,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 14:16:54,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 14:16:54,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041712030] [2020-12-22 14:16:54,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:16:54,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:54,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:16:54,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:54,031 INFO L87 Difference]: Start difference. First operand 80215 states and 123036 transitions. Second operand 5 states. [2020-12-22 14:16:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:56,058 INFO L93 Difference]: Finished difference Result 160316 states and 245932 transitions. [2020-12-22 14:16:56,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:16:56,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-12-22 14:16:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:56,576 INFO L225 Difference]: With dead ends: 160316 [2020-12-22 14:16:56,576 INFO L226 Difference]: Without dead ends: 80239 [2020-12-22 14:16:56,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80239 states. [2020-12-22 14:16:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80239 to 80231. [2020-12-22 14:16:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80231 states. [2020-12-22 14:17:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80231 states to 80231 states and 123052 transitions. [2020-12-22 14:17:00,134 INFO L78 Accepts]: Start accepts. Automaton has 80231 states and 123052 transitions. Word has length 199 [2020-12-22 14:17:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:17:00,135 INFO L481 AbstractCegarLoop]: Abstraction has 80231 states and 123052 transitions. [2020-12-22 14:17:00,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:17:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 80231 states and 123052 transitions. [2020-12-22 14:17:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 14:17:00,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:17:00,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:17:00,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:17:00,363 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:17:00,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:17:00,363 INFO L82 PathProgramCache]: Analyzing trace with hash 910082355, now seen corresponding path program 2 times [2020-12-22 14:17:00,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:17:00,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396276626] [2020-12-22 14:17:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:17:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:17:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:17:00,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396276626] [2020-12-22 14:17:00,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783258126] [2020-12-22 14:17:00,968 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 14:17:09,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 14:17:09,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 14:17:09,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 14:17:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:17:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:17:09,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:17:09,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 14:17:09,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339881930] [2020-12-22 14:17:09,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:17:09,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:17:09,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:17:09,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:17:09,711 INFO L87 Difference]: Start difference. First operand 80231 states and 123052 transitions. Second operand 3 states. [2020-12-22 14:17:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:17:11,673 INFO L93 Difference]: Finished difference Result 160460 states and 246135 transitions. [2020-12-22 14:17:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:17:11,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-22 14:17:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:17:11,942 INFO L225 Difference]: With dead ends: 160460 [2020-12-22 14:17:11,942 INFO L226 Difference]: Without dead ends: 80265 [2020-12-22 14:17:12,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 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 14:17:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80265 states. [2020-12-22 14:17:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80265 to 80265. [2020-12-22 14:17:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80265 states. [2020-12-22 14:17:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80265 states to 80265 states and 123086 transitions. [2020-12-22 14:17:14,397 INFO L78 Accepts]: Start accepts. Automaton has 80265 states and 123086 transitions. Word has length 201 [2020-12-22 14:17:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:17:14,398 INFO L481 AbstractCegarLoop]: Abstraction has 80265 states and 123086 transitions. [2020-12-22 14:17:14,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:17:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 80265 states and 123086 transitions. [2020-12-22 14:17:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 14:17:14,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:17:14,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:17:14,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:17:14,646 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:17:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:17:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash 566047409, now seen corresponding path program 1 times [2020-12-22 14:17:14,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:17:14,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048724151] [2020-12-22 14:17:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:17:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:17:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 14:17:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048724151] [2020-12-22 14:17:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660730927] [2020-12-22 14:17:15,171 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 14:17:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:17:17,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 14:17:17,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:17:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 14:17:17,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 14:17:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 14:17:17,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184174719] [2020-12-22 14:17:17,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 14:17:17,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:17:17,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 14:17:17,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:17:17,374 INFO L87 Difference]: Start difference. First operand 80265 states and 123086 transitions. Second operand 6 states. [2020-12-22 14:17:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:17:19,076 INFO L93 Difference]: Finished difference Result 160382 states and 245998 transitions. [2020-12-22 14:17:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:17:19,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2020-12-22 14:17:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:17:19,324 INFO L225 Difference]: With dead ends: 160382 [2020-12-22 14:17:19,324 INFO L226 Difference]: Without dead ends: 80289 [2020-12-22 14:17:19,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:17:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80289 states. [2020-12-22 14:17:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80289 to 80281. [2020-12-22 14:17:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80281 states. [2020-12-22 14:17:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80281 states to 80281 states and 123102 transitions. [2020-12-22 14:17:21,753 INFO L78 Accepts]: Start accepts. Automaton has 80281 states and 123102 transitions. Word has length 235 [2020-12-22 14:17:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:17:21,754 INFO L481 AbstractCegarLoop]: Abstraction has 80281 states and 123102 transitions. [2020-12-22 14:17:21,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 14:17:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 80281 states and 123102 transitions. [2020-12-22 14:17:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 14:17:21,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:17:21,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:17:21,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 14:17:21,978 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:17:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:17:21,979 INFO L82 PathProgramCache]: Analyzing trace with hash 404876693, now seen corresponding path program 2 times [2020-12-22 14:17:21,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:17:21,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090670442] [2020-12-22 14:17:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:17:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:17:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 14:17:22,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090670442] [2020-12-22 14:17:22,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830130644] [2020-12-22 14:17:22,426 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 14:17:29,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 14:17:29,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 14:17:29,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 14:17:30,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:17:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 14:17:30,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 14:17:30,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 14:17:30,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743070367] [2020-12-22 14:17:30,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:17:30,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:17:30,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:17:30,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:17:30,284 INFO L87 Difference]: Start difference. First operand 80281 states and 123102 transitions. Second operand 7 states. [2020-12-22 14:17:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:17:31,604 INFO L93 Difference]: Finished difference Result 160414 states and 246030 transitions. [2020-12-22 14:17:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:17:31,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-12-22 14:17:31,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:17:31,780 INFO L225 Difference]: With dead ends: 160414 [2020-12-22 14:17:31,781 INFO L226 Difference]: Without dead ends: 80305 [2020-12-22 14:17:31,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:17:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80305 states. [2020-12-22 14:17:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80305 to 80297. [2020-12-22 14:17:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80297 states. [2020-12-22 14:17:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80297 states to 80297 states and 123118 transitions. [2020-12-22 14:17:33,825 INFO L78 Accepts]: Start accepts. Automaton has 80297 states and 123118 transitions. Word has length 237 [2020-12-22 14:17:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:17:33,825 INFO L481 AbstractCegarLoop]: Abstraction has 80297 states and 123118 transitions. [2020-12-22 14:17:33,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:17:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 80297 states and 123118 transitions. [2020-12-22 14:17:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 14:17:33,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:17:33,834 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:17:34,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:17:34,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:17:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:17:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash 138641273, now seen corresponding path program 3 times [2020-12-22 14:17:34,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:17:34,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82688006] [2020-12-22 14:17:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:17:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:17:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 14:17:34,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82688006] [2020-12-22 14:17:34,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807173241] [2020-12-22 14:17:34,847 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 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