/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 00:29:06,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 00:29:06,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 00:29:06,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 00:29:06,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 00:29:06,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 00:29:06,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 00:29:06,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 00:29:06,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 00:29:06,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 00:29:06,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 00:29:06,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 00:29:06,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 00:29:06,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 00:29:06,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 00:29:06,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 00:29:06,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 00:29:06,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 00:29:06,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 00:29:06,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 00:29:06,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 00:29:06,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 00:29:06,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 00:29:06,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 00:29:06,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 00:29:06,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 00:29:06,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 00:29:06,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 00:29:06,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 00:29:06,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 00:29:06,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 00:29:06,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 00:29:06,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 00:29:06,797 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 00:29:06,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 00:29:06,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 00:29:06,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 00:29:06,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 00:29:06,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 00:29:06,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 00:29:06,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 00:29:06,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 00:29:06,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 00:29:06,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 00:29:06,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 00:29:06,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 00:29:06,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 00:29:06,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 00:29:06,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 00:29:06,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 00:29:06,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 00:29:06,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 00:29:06,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 00:29:06,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 00:29:06,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 00:29:07,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 00:29:07,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 00:29:07,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 00:29:07,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 00:29:07,239 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 00:29:07,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem07_label23.c [2020-12-22 00:29:07,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558522b62/4c4c71cb441c4b54abec9304b9477ad4/FLAG929334cc3 [2020-12-22 00:29:10,082 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 00:29:10,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label23.c [2020-12-22 00:29:10,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558522b62/4c4c71cb441c4b54abec9304b9477ad4/FLAG929334cc3 [2020-12-22 00:29:10,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558522b62/4c4c71cb441c4b54abec9304b9477ad4 [2020-12-22 00:29:10,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 00:29:10,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 00:29:10,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 00:29:10,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 00:29:10,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 00:29:10,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:29:10" (1/1) ... [2020-12-22 00:29:10,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245effaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:10, skipping insertion in model container [2020-12-22 00:29:10,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:29:10" (1/1) ... [2020-12-22 00:29:10,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 00:29:11,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 00:29:22,301 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_label23.c[2770180,2770193] [2020-12-22 00:29:22,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 00:29:22,412 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 00:29:29,760 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_label23.c[2770180,2770193] [2020-12-22 00:29:29,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 00:29:30,987 INFO L208 MainTranslator]: Completed translation [2020-12-22 00:29:30,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30 WrapperNode [2020-12-22 00:29:30,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 00:29:30,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 00:29:30,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 00:29:30,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 00:29:31,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:32,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:36,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 00:29:36,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 00:29:36,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 00:29:36,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 00:29:36,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:36,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:37,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:37,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:39,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:39,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:40,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (1/1) ... [2020-12-22 00:29:41,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 00:29:41,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 00:29:41,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 00:29:41,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 00:29:41,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (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 00:29:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 00:29:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 00:29:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 00:29:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 00:30:44,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 00:30:44,721 INFO L299 CfgBuilder]: Removed 97 assume(true) statements. [2020-12-22 00:30:44,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:30:44 BoogieIcfgContainer [2020-12-22 00:30:44,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 00:30:44,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 00:30:44,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 00:30:44,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 00:30:44,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:29:10" (1/3) ... [2020-12-22 00:30:44,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44807427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:30:44, skipping insertion in model container [2020-12-22 00:30:44,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:29:30" (2/3) ... [2020-12-22 00:30:44,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44807427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:30:44, skipping insertion in model container [2020-12-22 00:30:44,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:30:44" (3/3) ... [2020-12-22 00:30:44,743 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem07_label23.c [2020-12-22 00:30:44,750 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 00:30:44,759 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 00:30:44,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 00:30:44,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 00:30:44,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 00:30:44,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 00:30:44,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 00:30:44,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 00:30:44,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 00:30:44,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 00:30:44,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 00:30:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states. [2020-12-22 00:30:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10107 [2020-12-22 00:30:46,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 00:30:46,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 00:30:46,072 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 00:30:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 00:30:46,084 INFO L82 PathProgramCache]: Analyzing trace with hash 630729290, now seen corresponding path program 1 times [2020-12-22 00:30:46,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 00:30:46,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855450514] [2020-12-22 00:30:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 00:30:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 00:32:26,592 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 00:32:26,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855450514] [2020-12-22 00:32:26,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 00:32:26,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 00:32:26,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675434981] [2020-12-22 00:32:26,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 00:32:26,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 00:32:26,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 00:32:26,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 00:32:26,650 INFO L87 Difference]: Start difference. First operand 10257 states. Second operand 3 states.