/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/eca-rers2012/Problem07_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 00:35:55,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 00:35:55,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 00:35:55,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 00:35:55,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 00:35:55,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 00:35:55,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 00:35:55,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 00:35:55,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 00:35:55,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 00:35:55,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 00:35:55,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 00:35:55,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 00:35:55,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 00:35:55,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 00:35:55,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 00:35:55,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 00:35:55,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 00:35:55,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 00:35:55,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 00:35:55,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 00:35:55,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 00:35:55,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 00:35:55,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 00:35:55,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 00:35:55,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 00:35:55,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 00:35:55,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 00:35:55,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 00:35:55,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 00:35:55,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 00:35:55,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 00:35:55,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 00:35:55,684 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 00:35:55,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 00:35:55,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 00:35:55,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 00:35:55,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 00:35:55,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 00:35:55,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 00:35:55,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 00:35:55,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 00:35:55,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 00:35:55,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 00:35:55,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 00:35:55,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 00:35:55,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 00:35:55,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 00:35:55,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 00:35:55,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 00:35:55,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 00:35:55,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 00:35:55,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 00:35:55,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 00:35:55,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 00:35:56,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 00:35:56,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 00:35:56,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 00:35:56,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 00:35:56,135 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 00:35:56,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem07_label47.c [2020-12-22 00:35:56,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0a296df/aad3b9471db4465e84b8374b45074b5f/FLAGed19b7c7b [2020-12-22 00:35:59,166 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 00:35:59,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label47.c [2020-12-22 00:35:59,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0a296df/aad3b9471db4465e84b8374b45074b5f/FLAGed19b7c7b [2020-12-22 00:35:59,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0a296df/aad3b9471db4465e84b8374b45074b5f [2020-12-22 00:35:59,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 00:35:59,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 00:35:59,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 00:35:59,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 00:35:59,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 00:35:59,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:35:59" (1/1) ... [2020-12-22 00:35:59,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec5abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:59, skipping insertion in model container [2020-12-22 00:35:59,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:35:59" (1/1) ... [2020-12-22 00:35:59,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 00:36:00,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 00:36:11,125 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/eca-rers2012/Problem07_label47.c[2766942,2766955] [2020-12-22 00:36:11,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 00:36:11,209 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 00:36:17,382 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/eca-rers2012/Problem07_label47.c[2766942,2766955] [2020-12-22 00:36:17,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 00:36:18,590 INFO L208 MainTranslator]: Completed translation [2020-12-22 00:36:18,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18 WrapperNode [2020-12-22 00:36:18,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 00:36:18,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 00:36:18,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 00:36:18,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 00:36:18,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:19,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:22,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 00:36:22,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 00:36:22,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 00:36:22,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 00:36:22,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:22,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:23,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:23,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:24,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:25,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:25,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (1/1) ... [2020-12-22 00:36:26,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 00:36:26,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 00:36:26,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 00:36:26,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 00:36:26,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (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 00:36:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 00:36:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 00:36:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 00:36:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 00:37:26,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 00:37:26,668 INFO L299 CfgBuilder]: Removed 97 assume(true) statements. [2020-12-22 00:37:26,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:37:26 BoogieIcfgContainer [2020-12-22 00:37:26,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 00:37:26,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 00:37:26,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 00:37:26,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 00:37:26,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:35:59" (1/3) ... [2020-12-22 00:37:26,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5b56ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:37:26, skipping insertion in model container [2020-12-22 00:37:26,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:36:18" (2/3) ... [2020-12-22 00:37:26,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5b56ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:37:26, skipping insertion in model container [2020-12-22 00:37:26,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:37:26" (3/3) ... [2020-12-22 00:37:26,691 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem07_label47.c [2020-12-22 00:37:26,698 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 00:37:26,707 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 00:37:26,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 00:37:26,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 00:37:26,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 00:37:26,780 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 00:37:26,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 00:37:26,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 00:37:26,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 00:37:26,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 00:37:26,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 00:37:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states. [2020-12-22 00:37:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10088 [2020-12-22 00:37:27,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 00:37:27,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:37:27,998 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 00:37:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 00:37:28,012 INFO L82 PathProgramCache]: Analyzing trace with hash 262210241, now seen corresponding path program 1 times [2020-12-22 00:37:28,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 00:37:28,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619575893] [2020-12-22 00:37:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 00:37:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 00:39:06,979 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 00:39:06,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619575893] [2020-12-22 00:39:06,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 00:39:06,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 00:39:06,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630075135] [2020-12-22 00:39:07,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 00:39:07,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 00:39:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 00:39:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 00:39:07,020 INFO L87 Difference]: Start difference. First operand 10257 states. Second operand 3 states.