/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/locks/test_locks_12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:42:23,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:42:23,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:42:23,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:42:23,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:42:23,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:42:23,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:42:23,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:42:23,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:42:23,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:42:23,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:42:23,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:42:23,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:42:23,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:42:23,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:42:23,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:42:23,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:42:23,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:42:23,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:42:23,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:42:23,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:42:23,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:42:23,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:42:23,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:42:23,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:42:23,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:42:23,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:42:23,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:42:23,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:42:24,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:42:24,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:42:24,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:42:24,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:42:24,038 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:42:24,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:42:24,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:42:24,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:42:24,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:42:24,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:42:24,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:42:24,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:42:24,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:42:24,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:42:24,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:42:24,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:42:24,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:42:24,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:42:24,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:42:24,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:42:24,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:42:24,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:42:24,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:42:24,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:42:24,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:42:24,043 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:42:24,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:42:24,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:42:24,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:42:24,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:42:24,529 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:42:24,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2020-12-23 01:42:24,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ee6e67c91/233e5d92c3e543e7ae93126280d5607b/FLAG9260183a9 [2020-12-23 01:42:25,261 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:42:25,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2020-12-23 01:42:25,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ee6e67c91/233e5d92c3e543e7ae93126280d5607b/FLAG9260183a9 [2020-12-23 01:42:25,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ee6e67c91/233e5d92c3e543e7ae93126280d5607b [2020-12-23 01:42:25,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:42:25,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:42:25,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:42:25,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:42:25,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:42:25,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:25,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f17f6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25, skipping insertion in model container [2020-12-23 01:42:25,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:25,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:42:25,696 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] [2020-12-23 01:42:25,902 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2020-12-23 01:42:25,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:42:25,917 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] [2020-12-23 01:42:25,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2020-12-23 01:42:25,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:42:25,969 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:42:25,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25 WrapperNode [2020-12-23 01:42:25,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:42:25,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:42:25,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:42:25,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:42:25,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:25,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:42:26,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:42:26,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:42:26,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:42:26,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... [2020-12-23 01:42:26,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:42:26,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:42:26,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:42:26,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:42:26,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:42:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:42:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:42:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:42:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:42:26,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:42:26,555 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 01:42:26,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:26 BoogieIcfgContainer [2020-12-23 01:42:26,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:42:26,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:42:26,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:42:26,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:42:26,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:25" (1/3) ... [2020-12-23 01:42:26,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b6dc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:26, skipping insertion in model container [2020-12-23 01:42:26,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:25" (2/3) ... [2020-12-23 01:42:26,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b6dc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:26, skipping insertion in model container [2020-12-23 01:42:26,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:26" (3/3) ... [2020-12-23 01:42:26,572 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2020-12-23 01:42:26,580 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:42:26,585 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:42:26,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:42:26,638 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:42:26,638 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:42:26,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:42:26,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:42:26,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:42:26,639 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:42:26,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:42:26,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:42:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-12-23 01:42:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 01:42:26,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:26,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:26,663 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:26,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1341605783, now seen corresponding path program 1 times [2020-12-23 01:42:26,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:26,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973492412] [2020-12-23 01:42:26,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:26,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973492412] [2020-12-23 01:42:26,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:26,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:26,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210359672] [2020-12-23 01:42:26,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:26,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,004 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-12-23 01:42:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,098 INFO L93 Difference]: Finished difference Result 95 states and 169 transitions. [2020-12-23 01:42:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 01:42:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,125 INFO L225 Difference]: With dead ends: 95 [2020-12-23 01:42:27,126 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 01:42:27,132 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 [2020-12-23 01:42:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 01:42:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2020-12-23 01:42:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 01:42:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 102 transitions. [2020-12-23 01:42:27,197 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 102 transitions. Word has length 19 [2020-12-23 01:42:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:27,198 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 102 transitions. [2020-12-23 01:42:27,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 102 transitions. [2020-12-23 01:42:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 01:42:27,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:27,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:27,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:42:27,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:27,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:27,207 INFO L82 PathProgramCache]: Analyzing trace with hash 61742105, now seen corresponding path program 1 times [2020-12-23 01:42:27,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:27,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496522740] [2020-12-23 01:42:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:27,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496522740] [2020-12-23 01:42:27,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:27,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:27,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127902736] [2020-12-23 01:42:27,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:27,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,322 INFO L87 Difference]: Start difference. First operand 55 states and 102 transitions. Second operand 3 states. [2020-12-23 01:42:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,358 INFO L93 Difference]: Finished difference Result 134 states and 249 transitions. [2020-12-23 01:42:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 01:42:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,360 INFO L225 Difference]: With dead ends: 134 [2020-12-23 01:42:27,361 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 01:42:27,362 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 [2020-12-23 01:42:27,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 01:42:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-12-23 01:42:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 01:42:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 146 transitions. [2020-12-23 01:42:27,375 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 146 transitions. Word has length 19 [2020-12-23 01:42:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:27,376 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 146 transitions. [2020-12-23 01:42:27,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 146 transitions. [2020-12-23 01:42:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:42:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:27,378 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] [2020-12-23 01:42:27,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:42:27,378 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1359680987, now seen corresponding path program 1 times [2020-12-23 01:42:27,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:27,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21258998] [2020-12-23 01:42:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:27,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21258998] [2020-12-23 01:42:27,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:27,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:27,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955544558] [2020-12-23 01:42:27,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:27,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,438 INFO L87 Difference]: Start difference. First operand 79 states and 146 transitions. Second operand 3 states. [2020-12-23 01:42:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,460 INFO L93 Difference]: Finished difference Result 123 states and 222 transitions. [2020-12-23 01:42:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 01:42:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,465 INFO L225 Difference]: With dead ends: 123 [2020-12-23 01:42:27,465 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 01:42:27,466 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 [2020-12-23 01:42:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 01:42:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-12-23 01:42:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 01:42:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 148 transitions. [2020-12-23 01:42:27,486 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 148 transitions. Word has length 20 [2020-12-23 01:42:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:27,487 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 148 transitions. [2020-12-23 01:42:27,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 148 transitions. [2020-12-23 01:42:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:42:27,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:27,491 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] [2020-12-23 01:42:27,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:42:27,493 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1914217955, now seen corresponding path program 1 times [2020-12-23 01:42:27,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:27,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649801991] [2020-12-23 01:42:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:27,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649801991] [2020-12-23 01:42:27,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:27,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:27,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130627867] [2020-12-23 01:42:27,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:27,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,602 INFO L87 Difference]: Start difference. First operand 82 states and 148 transitions. Second operand 3 states. [2020-12-23 01:42:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,646 INFO L93 Difference]: Finished difference Result 157 states and 285 transitions. [2020-12-23 01:42:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 01:42:27,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,649 INFO L225 Difference]: With dead ends: 157 [2020-12-23 01:42:27,649 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 01:42:27,650 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 [2020-12-23 01:42:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 01:42:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-12-23 01:42:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 01:42:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 197 transitions. [2020-12-23 01:42:27,671 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 197 transitions. Word has length 20 [2020-12-23 01:42:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:27,673 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 197 transitions. [2020-12-23 01:42:27,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 197 transitions. [2020-12-23 01:42:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:42:27,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:27,675 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] [2020-12-23 01:42:27,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 01:42:27,676 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:27,677 INFO L82 PathProgramCache]: Analyzing trace with hash 634354277, now seen corresponding path program 1 times [2020-12-23 01:42:27,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:27,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691795066] [2020-12-23 01:42:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:27,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691795066] [2020-12-23 01:42:27,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:27,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:27,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873993486] [2020-12-23 01:42:27,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:27,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,806 INFO L87 Difference]: Start difference. First operand 109 states and 197 transitions. Second operand 3 states. [2020-12-23 01:42:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,834 INFO L93 Difference]: Finished difference Result 261 states and 475 transitions. [2020-12-23 01:42:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 01:42:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,838 INFO L225 Difference]: With dead ends: 261 [2020-12-23 01:42:27,839 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 01:42:27,840 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 [2020-12-23 01:42:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 01:42:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-12-23 01:42:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 01:42:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 279 transitions. [2020-12-23 01:42:27,866 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 279 transitions. Word has length 20 [2020-12-23 01:42:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:27,866 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 279 transitions. [2020-12-23 01:42:27,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 279 transitions. [2020-12-23 01:42:27,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 01:42:27,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:27,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:27,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 01:42:27,872 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash -788572498, now seen corresponding path program 1 times [2020-12-23 01:42:27,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:27,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917882240] [2020-12-23 01:42:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:27,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917882240] [2020-12-23 01:42:27,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:27,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:27,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108411117] [2020-12-23 01:42:27,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:27,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,914 INFO L87 Difference]: Start difference. First operand 155 states and 279 transitions. Second operand 3 states. [2020-12-23 01:42:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,929 INFO L93 Difference]: Finished difference Result 234 states and 418 transitions. [2020-12-23 01:42:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 01:42:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,931 INFO L225 Difference]: With dead ends: 234 [2020-12-23 01:42:27,931 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 01:42:27,932 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 [2020-12-23 01:42:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 01:42:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-12-23 01:42:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 01:42:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2020-12-23 01:42:27,942 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 21 [2020-12-23 01:42:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:27,942 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2020-12-23 01:42:27,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2020-12-23 01:42:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 01:42:27,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:27,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:27,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 01:42:27,944 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:27,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:27,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1809640852, now seen corresponding path program 1 times [2020-12-23 01:42:27,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:27,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118900058] [2020-12-23 01:42:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:27,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118900058] [2020-12-23 01:42:27,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:27,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348573401] [2020-12-23 01:42:27,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:27,977 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 3 states. [2020-12-23 01:42:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:27,995 INFO L93 Difference]: Finished difference Result 453 states and 809 transitions. [2020-12-23 01:42:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:27,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 01:42:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:27,998 INFO L225 Difference]: With dead ends: 453 [2020-12-23 01:42:27,998 INFO L226 Difference]: Without dead ends: 303 [2020-12-23 01:42:28,000 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 [2020-12-23 01:42:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-23 01:42:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2020-12-23 01:42:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-12-23 01:42:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 531 transitions. [2020-12-23 01:42:28,013 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 531 transitions. Word has length 21 [2020-12-23 01:42:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,013 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 531 transitions. [2020-12-23 01:42:28,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 531 transitions. [2020-12-23 01:42:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 01:42:28,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:28,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 01:42:28,016 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash -529777174, now seen corresponding path program 1 times [2020-12-23 01:42:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234885039] [2020-12-23 01:42:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234885039] [2020-12-23 01:42:28,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811353216] [2020-12-23 01:42:28,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,056 INFO L87 Difference]: Start difference. First operand 301 states and 531 transitions. Second operand 3 states. [2020-12-23 01:42:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,072 INFO L93 Difference]: Finished difference Result 385 states and 685 transitions. [2020-12-23 01:42:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 01:42:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,075 INFO L225 Difference]: With dead ends: 385 [2020-12-23 01:42:28,075 INFO L226 Difference]: Without dead ends: 383 [2020-12-23 01:42:28,076 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 [2020-12-23 01:42:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-12-23 01:42:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2020-12-23 01:42:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-12-23 01:42:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 527 transitions. [2020-12-23 01:42:28,088 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 527 transitions. Word has length 21 [2020-12-23 01:42:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,088 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 527 transitions. [2020-12-23 01:42:28,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 527 transitions. [2020-12-23 01:42:28,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 01:42:28,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:28,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 01:42:28,091 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,091 INFO L82 PathProgramCache]: Analyzing trace with hash -264078182, now seen corresponding path program 1 times [2020-12-23 01:42:28,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292896050] [2020-12-23 01:42:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292896050] [2020-12-23 01:42:28,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108574266] [2020-12-23 01:42:28,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,122 INFO L87 Difference]: Start difference. First operand 301 states and 527 transitions. Second operand 3 states. [2020-12-23 01:42:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,141 INFO L93 Difference]: Finished difference Result 565 states and 1001 transitions. [2020-12-23 01:42:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 01:42:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,145 INFO L225 Difference]: With dead ends: 565 [2020-12-23 01:42:28,145 INFO L226 Difference]: Without dead ends: 563 [2020-12-23 01:42:28,146 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 [2020-12-23 01:42:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-23 01:42:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 417. [2020-12-23 01:42:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-12-23 01:42:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 719 transitions. [2020-12-23 01:42:28,172 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 719 transitions. Word has length 22 [2020-12-23 01:42:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,172 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 719 transitions. [2020-12-23 01:42:28,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 719 transitions. [2020-12-23 01:42:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 01:42:28,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:28,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 01:42:28,178 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1543941860, now seen corresponding path program 1 times [2020-12-23 01:42:28,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384735603] [2020-12-23 01:42:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384735603] [2020-12-23 01:42:28,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694710795] [2020-12-23 01:42:28,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,234 INFO L87 Difference]: Start difference. First operand 417 states and 719 transitions. Second operand 3 states. [2020-12-23 01:42:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,271 INFO L93 Difference]: Finished difference Result 997 states and 1729 transitions. [2020-12-23 01:42:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 01:42:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,281 INFO L225 Difference]: With dead ends: 997 [2020-12-23 01:42:28,281 INFO L226 Difference]: Without dead ends: 587 [2020-12-23 01:42:28,283 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 [2020-12-23 01:42:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-12-23 01:42:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2020-12-23 01:42:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-12-23 01:42:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1003 transitions. [2020-12-23 01:42:28,321 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1003 transitions. Word has length 22 [2020-12-23 01:42:28,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,324 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1003 transitions. [2020-12-23 01:42:28,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1003 transitions. [2020-12-23 01:42:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:42:28,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,327 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] [2020-12-23 01:42:28,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 01:42:28,328 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,328 INFO L82 PathProgramCache]: Analyzing trace with hash 403724673, now seen corresponding path program 1 times [2020-12-23 01:42:28,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724986053] [2020-12-23 01:42:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724986053] [2020-12-23 01:42:28,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160343439] [2020-12-23 01:42:28,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,389 INFO L87 Difference]: Start difference. First operand 585 states and 1003 transitions. Second operand 3 states. [2020-12-23 01:42:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,416 INFO L93 Difference]: Finished difference Result 885 states and 1513 transitions. [2020-12-23 01:42:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 01:42:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,421 INFO L225 Difference]: With dead ends: 885 [2020-12-23 01:42:28,421 INFO L226 Difference]: Without dead ends: 599 [2020-12-23 01:42:28,422 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 [2020-12-23 01:42:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-23 01:42:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-23 01:42:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-23 01:42:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1011 transitions. [2020-12-23 01:42:28,443 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1011 transitions. Word has length 23 [2020-12-23 01:42:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,443 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 1011 transitions. [2020-12-23 01:42:28,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,444 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1011 transitions. [2020-12-23 01:42:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:42:28,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,445 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] [2020-12-23 01:42:28,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 01:42:28,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash -617343681, now seen corresponding path program 1 times [2020-12-23 01:42:28,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65110755] [2020-12-23 01:42:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65110755] [2020-12-23 01:42:28,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069323423] [2020-12-23 01:42:28,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,504 INFO L87 Difference]: Start difference. First operand 597 states and 1011 transitions. Second operand 3 states. [2020-12-23 01:42:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,530 INFO L93 Difference]: Finished difference Result 1097 states and 1885 transitions. [2020-12-23 01:42:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 01:42:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,537 INFO L225 Difference]: With dead ends: 1097 [2020-12-23 01:42:28,537 INFO L226 Difference]: Without dead ends: 1095 [2020-12-23 01:42:28,538 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 [2020-12-23 01:42:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-12-23 01:42:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 837. [2020-12-23 01:42:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-12-23 01:42:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1387 transitions. [2020-12-23 01:42:28,589 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1387 transitions. Word has length 23 [2020-12-23 01:42:28,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,590 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1387 transitions. [2020-12-23 01:42:28,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,590 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1387 transitions. [2020-12-23 01:42:28,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:42:28,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,593 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] [2020-12-23 01:42:28,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 01:42:28,594 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1897207359, now seen corresponding path program 1 times [2020-12-23 01:42:28,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197355396] [2020-12-23 01:42:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197355396] [2020-12-23 01:42:28,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946200941] [2020-12-23 01:42:28,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,644 INFO L87 Difference]: Start difference. First operand 837 states and 1387 transitions. Second operand 3 states. [2020-12-23 01:42:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,679 INFO L93 Difference]: Finished difference Result 1977 states and 3293 transitions. [2020-12-23 01:42:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 01:42:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,687 INFO L225 Difference]: With dead ends: 1977 [2020-12-23 01:42:28,687 INFO L226 Difference]: Without dead ends: 1159 [2020-12-23 01:42:28,693 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 [2020-12-23 01:42:28,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-23 01:42:28,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2020-12-23 01:42:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-12-23 01:42:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2020-12-23 01:42:28,733 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 23 [2020-12-23 01:42:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,739 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2020-12-23 01:42:28,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2020-12-23 01:42:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:42:28,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,744 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] [2020-12-23 01:42:28,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 01:42:28,744 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1957570863, now seen corresponding path program 1 times [2020-12-23 01:42:28,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622271376] [2020-12-23 01:42:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622271376] [2020-12-23 01:42:28,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600748722] [2020-12-23 01:42:28,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,789 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand 3 states. [2020-12-23 01:42:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,816 INFO L93 Difference]: Finished difference Result 1737 states and 2853 transitions. [2020-12-23 01:42:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 01:42:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,823 INFO L225 Difference]: With dead ends: 1737 [2020-12-23 01:42:28,823 INFO L226 Difference]: Without dead ends: 1175 [2020-12-23 01:42:28,824 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 [2020-12-23 01:42:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-12-23 01:42:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2020-12-23 01:42:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-12-23 01:42:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1907 transitions. [2020-12-23 01:42:28,859 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1907 transitions. Word has length 24 [2020-12-23 01:42:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,860 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1907 transitions. [2020-12-23 01:42:28,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1907 transitions. [2020-12-23 01:42:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:42:28,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,862 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] [2020-12-23 01:42:28,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 01:42:28,862 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1316328079, now seen corresponding path program 1 times [2020-12-23 01:42:28,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335530096] [2020-12-23 01:42:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:28,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335530096] [2020-12-23 01:42:28,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:28,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:28,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130424566] [2020-12-23 01:42:28,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:28,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:28,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:28,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:28,887 INFO L87 Difference]: Start difference. First operand 1173 states and 1907 transitions. Second operand 3 states. [2020-12-23 01:42:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:28,918 INFO L93 Difference]: Finished difference Result 2121 states and 3509 transitions. [2020-12-23 01:42:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:28,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 01:42:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:28,928 INFO L225 Difference]: With dead ends: 2121 [2020-12-23 01:42:28,929 INFO L226 Difference]: Without dead ends: 2119 [2020-12-23 01:42:28,932 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 [2020-12-23 01:42:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-12-23 01:42:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1669. [2020-12-23 01:42:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-12-23 01:42:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2643 transitions. [2020-12-23 01:42:28,994 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2643 transitions. Word has length 24 [2020-12-23 01:42:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:28,994 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 2643 transitions. [2020-12-23 01:42:28,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2643 transitions. [2020-12-23 01:42:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:42:28,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:28,997 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] [2020-12-23 01:42:28,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 01:42:28,998 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash 36464401, now seen corresponding path program 1 times [2020-12-23 01:42:28,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:28,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580127653] [2020-12-23 01:42:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:29,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580127653] [2020-12-23 01:42:29,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:29,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:29,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324222135] [2020-12-23 01:42:29,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:29,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:29,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:29,037 INFO L87 Difference]: Start difference. First operand 1669 states and 2643 transitions. Second operand 3 states. [2020-12-23 01:42:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:29,080 INFO L93 Difference]: Finished difference Result 3913 states and 6229 transitions. [2020-12-23 01:42:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:29,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 01:42:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:29,091 INFO L225 Difference]: With dead ends: 3913 [2020-12-23 01:42:29,092 INFO L226 Difference]: Without dead ends: 2279 [2020-12-23 01:42:29,096 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 [2020-12-23 01:42:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-12-23 01:42:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2277. [2020-12-23 01:42:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-23 01:42:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3587 transitions. [2020-12-23 01:42:29,162 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3587 transitions. Word has length 24 [2020-12-23 01:42:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:29,163 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3587 transitions. [2020-12-23 01:42:29,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3587 transitions. [2020-12-23 01:42:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 01:42:29,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:29,166 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] [2020-12-23 01:42:29,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 01:42:29,166 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2143288106, now seen corresponding path program 1 times [2020-12-23 01:42:29,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:29,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104937475] [2020-12-23 01:42:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:29,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104937475] [2020-12-23 01:42:29,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:29,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:29,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238759228] [2020-12-23 01:42:29,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:29,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:29,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:29,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:29,221 INFO L87 Difference]: Start difference. First operand 2277 states and 3587 transitions. Second operand 3 states. [2020-12-23 01:42:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:29,260 INFO L93 Difference]: Finished difference Result 3417 states and 5365 transitions. [2020-12-23 01:42:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:29,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 01:42:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:29,272 INFO L225 Difference]: With dead ends: 3417 [2020-12-23 01:42:29,272 INFO L226 Difference]: Without dead ends: 2311 [2020-12-23 01:42:29,274 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 [2020-12-23 01:42:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-12-23 01:42:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2020-12-23 01:42:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-12-23 01:42:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3587 transitions. [2020-12-23 01:42:29,349 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3587 transitions. Word has length 25 [2020-12-23 01:42:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:29,350 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 3587 transitions. [2020-12-23 01:42:29,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3587 transitions. [2020-12-23 01:42:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 01:42:29,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:29,353 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] [2020-12-23 01:42:29,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 01:42:29,353 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:29,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1130610836, now seen corresponding path program 1 times [2020-12-23 01:42:29,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:29,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602369968] [2020-12-23 01:42:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:29,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602369968] [2020-12-23 01:42:29,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:29,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:29,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117644461] [2020-12-23 01:42:29,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:29,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:29,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:29,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:29,395 INFO L87 Difference]: Start difference. First operand 2309 states and 3587 transitions. Second operand 3 states. [2020-12-23 01:42:29,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:29,455 INFO L93 Difference]: Finished difference Result 4105 states and 6501 transitions. [2020-12-23 01:42:29,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:29,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 01:42:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:29,477 INFO L225 Difference]: With dead ends: 4105 [2020-12-23 01:42:29,477 INFO L226 Difference]: Without dead ends: 4103 [2020-12-23 01:42:29,481 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 [2020-12-23 01:42:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-12-23 01:42:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3333. [2020-12-23 01:42:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3333 states. [2020-12-23 01:42:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5027 transitions. [2020-12-23 01:42:29,592 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5027 transitions. Word has length 25 [2020-12-23 01:42:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:29,593 INFO L481 AbstractCegarLoop]: Abstraction has 3333 states and 5027 transitions. [2020-12-23 01:42:29,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5027 transitions. [2020-12-23 01:42:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 01:42:29,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:29,598 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] [2020-12-23 01:42:29,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 01:42:29,598 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash -149252842, now seen corresponding path program 1 times [2020-12-23 01:42:29,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:29,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131311515] [2020-12-23 01:42:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:29,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131311515] [2020-12-23 01:42:29,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:29,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:29,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987597405] [2020-12-23 01:42:29,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:29,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:29,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:29,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:29,630 INFO L87 Difference]: Start difference. First operand 3333 states and 5027 transitions. Second operand 3 states. [2020-12-23 01:42:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:29,756 INFO L93 Difference]: Finished difference Result 7753 states and 11749 transitions. [2020-12-23 01:42:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:29,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 01:42:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:29,782 INFO L225 Difference]: With dead ends: 7753 [2020-12-23 01:42:29,782 INFO L226 Difference]: Without dead ends: 4487 [2020-12-23 01:42:29,787 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 [2020-12-23 01:42:29,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-12-23 01:42:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2020-12-23 01:42:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4485 states. [2020-12-23 01:42:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6723 transitions. [2020-12-23 01:42:29,931 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6723 transitions. Word has length 25 [2020-12-23 01:42:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:29,931 INFO L481 AbstractCegarLoop]: Abstraction has 4485 states and 6723 transitions. [2020-12-23 01:42:29,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6723 transitions. [2020-12-23 01:42:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:42:29,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:29,939 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] [2020-12-23 01:42:29,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 01:42:29,939 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash 689412294, now seen corresponding path program 1 times [2020-12-23 01:42:29,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:29,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698010729] [2020-12-23 01:42:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:29,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698010729] [2020-12-23 01:42:29,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:29,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:29,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132059128] [2020-12-23 01:42:29,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:29,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:29,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:29,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:29,975 INFO L87 Difference]: Start difference. First operand 4485 states and 6723 transitions. Second operand 3 states. [2020-12-23 01:42:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:30,067 INFO L93 Difference]: Finished difference Result 6729 states and 10053 transitions. [2020-12-23 01:42:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:30,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 01:42:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:30,103 INFO L225 Difference]: With dead ends: 6729 [2020-12-23 01:42:30,104 INFO L226 Difference]: Without dead ends: 4551 [2020-12-23 01:42:30,111 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 [2020-12-23 01:42:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2020-12-23 01:42:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4549. [2020-12-23 01:42:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4549 states. [2020-12-23 01:42:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6723 transitions. [2020-12-23 01:42:30,303 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6723 transitions. Word has length 26 [2020-12-23 01:42:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:30,304 INFO L481 AbstractCegarLoop]: Abstraction has 4549 states and 6723 transitions. [2020-12-23 01:42:30,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6723 transitions. [2020-12-23 01:42:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:42:30,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:30,311 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] [2020-12-23 01:42:30,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 01:42:30,313 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:30,314 INFO L82 PathProgramCache]: Analyzing trace with hash -331656060, now seen corresponding path program 1 times [2020-12-23 01:42:30,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:30,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570150552] [2020-12-23 01:42:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:30,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570150552] [2020-12-23 01:42:30,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:30,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176664407] [2020-12-23 01:42:30,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:30,344 INFO L87 Difference]: Start difference. First operand 4549 states and 6723 transitions. Second operand 3 states. [2020-12-23 01:42:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:30,439 INFO L93 Difference]: Finished difference Result 7945 states and 11973 transitions. [2020-12-23 01:42:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:30,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 01:42:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:30,457 INFO L225 Difference]: With dead ends: 7945 [2020-12-23 01:42:30,457 INFO L226 Difference]: Without dead ends: 7943 [2020-12-23 01:42:30,461 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 [2020-12-23 01:42:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2020-12-23 01:42:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 6661. [2020-12-23 01:42:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6661 states. [2020-12-23 01:42:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9539 transitions. [2020-12-23 01:42:30,644 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9539 transitions. Word has length 26 [2020-12-23 01:42:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:30,644 INFO L481 AbstractCegarLoop]: Abstraction has 6661 states and 9539 transitions. [2020-12-23 01:42:30,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9539 transitions. [2020-12-23 01:42:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:42:30,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:30,656 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] [2020-12-23 01:42:30,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 01:42:30,656 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:30,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1611519738, now seen corresponding path program 1 times [2020-12-23 01:42:30,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:30,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152993554] [2020-12-23 01:42:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:30,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152993554] [2020-12-23 01:42:30,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:30,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:30,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913823391] [2020-12-23 01:42:30,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:30,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:30,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:30,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:30,756 INFO L87 Difference]: Start difference. First operand 6661 states and 9539 transitions. Second operand 3 states. [2020-12-23 01:42:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:30,931 INFO L93 Difference]: Finished difference Result 15369 states and 22085 transitions. [2020-12-23 01:42:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:30,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 01:42:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:30,952 INFO L225 Difference]: With dead ends: 15369 [2020-12-23 01:42:30,953 INFO L226 Difference]: Without dead ends: 8839 [2020-12-23 01:42:30,964 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 [2020-12-23 01:42:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2020-12-23 01:42:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8837. [2020-12-23 01:42:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8837 states. [2020-12-23 01:42:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12547 transitions. [2020-12-23 01:42:31,246 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12547 transitions. Word has length 26 [2020-12-23 01:42:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:31,246 INFO L481 AbstractCegarLoop]: Abstraction has 8837 states and 12547 transitions. [2020-12-23 01:42:31,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12547 transitions. [2020-12-23 01:42:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 01:42:31,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:31,257 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] [2020-12-23 01:42:31,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 01:42:31,258 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1691188181, now seen corresponding path program 1 times [2020-12-23 01:42:31,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:31,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55450103] [2020-12-23 01:42:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:31,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55450103] [2020-12-23 01:42:31,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:31,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858512407] [2020-12-23 01:42:31,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:31,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:31,300 INFO L87 Difference]: Start difference. First operand 8837 states and 12547 transitions. Second operand 3 states. [2020-12-23 01:42:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:31,502 INFO L93 Difference]: Finished difference Result 13257 states and 18757 transitions. [2020-12-23 01:42:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:31,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-23 01:42:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:31,524 INFO L225 Difference]: With dead ends: 13257 [2020-12-23 01:42:31,524 INFO L226 Difference]: Without dead ends: 8967 [2020-12-23 01:42:31,531 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 [2020-12-23 01:42:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2020-12-23 01:42:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8965. [2020-12-23 01:42:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8965 states. [2020-12-23 01:42:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8965 states to 8965 states and 12547 transitions. [2020-12-23 01:42:31,796 INFO L78 Accepts]: Start accepts. Automaton has 8965 states and 12547 transitions. Word has length 27 [2020-12-23 01:42:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:31,796 INFO L481 AbstractCegarLoop]: Abstraction has 8965 states and 12547 transitions. [2020-12-23 01:42:31,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 8965 states and 12547 transitions. [2020-12-23 01:42:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 01:42:31,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:31,807 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] [2020-12-23 01:42:31,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 01:42:31,808 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1582710761, now seen corresponding path program 1 times [2020-12-23 01:42:31,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:31,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936888786] [2020-12-23 01:42:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:31,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936888786] [2020-12-23 01:42:31,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:31,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:31,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175917509] [2020-12-23 01:42:31,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:31,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:31,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:31,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:31,838 INFO L87 Difference]: Start difference. First operand 8965 states and 12547 transitions. Second operand 3 states. [2020-12-23 01:42:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:32,077 INFO L93 Difference]: Finished difference Result 15369 states and 21893 transitions. [2020-12-23 01:42:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:32,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-23 01:42:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:32,113 INFO L225 Difference]: With dead ends: 15369 [2020-12-23 01:42:32,114 INFO L226 Difference]: Without dead ends: 15367 [2020-12-23 01:42:32,118 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 [2020-12-23 01:42:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2020-12-23 01:42:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13317. [2020-12-23 01:42:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13317 states. [2020-12-23 01:42:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13317 states to 13317 states and 18051 transitions. [2020-12-23 01:42:32,534 INFO L78 Accepts]: Start accepts. Automaton has 13317 states and 18051 transitions. Word has length 27 [2020-12-23 01:42:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:32,534 INFO L481 AbstractCegarLoop]: Abstraction has 13317 states and 18051 transitions. [2020-12-23 01:42:32,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 13317 states and 18051 transitions. [2020-12-23 01:42:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 01:42:32,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:32,555 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] [2020-12-23 01:42:32,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 01:42:32,555 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash 302847083, now seen corresponding path program 1 times [2020-12-23 01:42:32,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:32,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915465298] [2020-12-23 01:42:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:32,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915465298] [2020-12-23 01:42:32,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:32,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:32,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094455625] [2020-12-23 01:42:32,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:32,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:32,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:32,578 INFO L87 Difference]: Start difference. First operand 13317 states and 18051 transitions. Second operand 3 states. [2020-12-23 01:42:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:32,845 INFO L93 Difference]: Finished difference Result 30473 states and 41349 transitions. [2020-12-23 01:42:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:32,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-23 01:42:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:32,884 INFO L225 Difference]: With dead ends: 30473 [2020-12-23 01:42:32,884 INFO L226 Difference]: Without dead ends: 17415 [2020-12-23 01:42:32,906 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 [2020-12-23 01:42:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2020-12-23 01:42:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17413. [2020-12-23 01:42:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17413 states. [2020-12-23 01:42:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23299 transitions. [2020-12-23 01:42:33,598 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23299 transitions. Word has length 27 [2020-12-23 01:42:33,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:33,598 INFO L481 AbstractCegarLoop]: Abstraction has 17413 states and 23299 transitions. [2020-12-23 01:42:33,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23299 transitions. [2020-12-23 01:42:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 01:42:33,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:33,620 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] [2020-12-23 01:42:33,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 01:42:33,620 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:33,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1819608763, now seen corresponding path program 1 times [2020-12-23 01:42:33,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:33,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859997000] [2020-12-23 01:42:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:33,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859997000] [2020-12-23 01:42:33,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:33,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:33,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077142998] [2020-12-23 01:42:33,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:33,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:33,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:33,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:33,641 INFO L87 Difference]: Start difference. First operand 17413 states and 23299 transitions. Second operand 3 states. [2020-12-23 01:42:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:33,861 INFO L93 Difference]: Finished difference Result 26121 states and 34821 transitions. [2020-12-23 01:42:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:33,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-23 01:42:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:33,899 INFO L225 Difference]: With dead ends: 26121 [2020-12-23 01:42:33,899 INFO L226 Difference]: Without dead ends: 17671 [2020-12-23 01:42:33,914 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 [2020-12-23 01:42:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2020-12-23 01:42:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17669. [2020-12-23 01:42:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17669 states. [2020-12-23 01:42:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17669 states to 17669 states and 23299 transitions. [2020-12-23 01:42:34,391 INFO L78 Accepts]: Start accepts. Automaton has 17669 states and 23299 transitions. Word has length 28 [2020-12-23 01:42:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:34,391 INFO L481 AbstractCegarLoop]: Abstraction has 17669 states and 23299 transitions. [2020-12-23 01:42:34,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 17669 states and 23299 transitions. [2020-12-23 01:42:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 01:42:34,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:34,414 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] [2020-12-23 01:42:34,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 01:42:34,414 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:34,415 INFO L82 PathProgramCache]: Analyzing trace with hash 798540409, now seen corresponding path program 1 times [2020-12-23 01:42:34,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:34,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509828839] [2020-12-23 01:42:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:34,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509828839] [2020-12-23 01:42:34,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:34,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:34,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590016866] [2020-12-23 01:42:34,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:34,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:34,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:34,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:34,440 INFO L87 Difference]: Start difference. First operand 17669 states and 23299 transitions. Second operand 3 states. [2020-12-23 01:42:34,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:34,843 INFO L93 Difference]: Finished difference Result 29705 states and 39685 transitions. [2020-12-23 01:42:34,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:34,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-23 01:42:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:34,902 INFO L225 Difference]: With dead ends: 29705 [2020-12-23 01:42:34,902 INFO L226 Difference]: Without dead ends: 29703 [2020-12-23 01:42:34,908 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 [2020-12-23 01:42:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29703 states. [2020-12-23 01:42:35,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29703 to 26629. [2020-12-23 01:42:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26629 states. [2020-12-23 01:42:35,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 34051 transitions. [2020-12-23 01:42:35,736 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 34051 transitions. Word has length 28 [2020-12-23 01:42:35,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:35,737 INFO L481 AbstractCegarLoop]: Abstraction has 26629 states and 34051 transitions. [2020-12-23 01:42:35,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:35,737 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 34051 transitions. [2020-12-23 01:42:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 01:42:35,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:35,781 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] [2020-12-23 01:42:35,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 01:42:35,781 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash -481323269, now seen corresponding path program 1 times [2020-12-23 01:42:35,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:35,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892529835] [2020-12-23 01:42:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:35,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892529835] [2020-12-23 01:42:35,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:35,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:35,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357909335] [2020-12-23 01:42:35,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:35,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:35,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:35,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:35,808 INFO L87 Difference]: Start difference. First operand 26629 states and 34051 transitions. Second operand 3 states. [2020-12-23 01:42:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:36,504 INFO L93 Difference]: Finished difference Result 60425 states and 77061 transitions. [2020-12-23 01:42:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:36,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-23 01:42:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:36,578 INFO L225 Difference]: With dead ends: 60425 [2020-12-23 01:42:36,578 INFO L226 Difference]: Without dead ends: 34311 [2020-12-23 01:42:36,607 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 [2020-12-23 01:42:36,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2020-12-23 01:42:37,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 34309. [2020-12-23 01:42:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34309 states. [2020-12-23 01:42:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 43011 transitions. [2020-12-23 01:42:37,707 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 43011 transitions. Word has length 28 [2020-12-23 01:42:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:37,707 INFO L481 AbstractCegarLoop]: Abstraction has 34309 states and 43011 transitions. [2020-12-23 01:42:37,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 43011 transitions. [2020-12-23 01:42:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:42:37,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:37,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:37,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 01:42:37,739 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1014835328, now seen corresponding path program 1 times [2020-12-23 01:42:37,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:37,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688461536] [2020-12-23 01:42:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:37,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688461536] [2020-12-23 01:42:37,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:37,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:37,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517589880] [2020-12-23 01:42:37,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:37,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:37,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:37,762 INFO L87 Difference]: Start difference. First operand 34309 states and 43011 transitions. Second operand 3 states. [2020-12-23 01:42:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:38,341 INFO L93 Difference]: Finished difference Result 51465 states and 64261 transitions. [2020-12-23 01:42:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:38,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 01:42:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:38,389 INFO L225 Difference]: With dead ends: 51465 [2020-12-23 01:42:38,389 INFO L226 Difference]: Without dead ends: 34823 [2020-12-23 01:42:38,400 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 [2020-12-23 01:42:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34823 states. [2020-12-23 01:42:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34823 to 34821. [2020-12-23 01:42:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-12-23 01:42:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 43011 transitions. [2020-12-23 01:42:39,287 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 43011 transitions. Word has length 29 [2020-12-23 01:42:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:39,288 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 43011 transitions. [2020-12-23 01:42:39,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 43011 transitions. [2020-12-23 01:42:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:42:39,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:39,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:39,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 01:42:39,319 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:39,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:39,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2035903682, now seen corresponding path program 1 times [2020-12-23 01:42:39,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:39,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117739941] [2020-12-23 01:42:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:39,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117739941] [2020-12-23 01:42:39,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:39,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:39,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985558188] [2020-12-23 01:42:39,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:39,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:39,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:39,341 INFO L87 Difference]: Start difference. First operand 34821 states and 43011 transitions. Second operand 3 states. [2020-12-23 01:42:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:40,092 INFO L93 Difference]: Finished difference Result 101385 states and 122885 transitions. [2020-12-23 01:42:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:40,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 01:42:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:40,354 INFO L225 Difference]: With dead ends: 101385 [2020-12-23 01:42:40,354 INFO L226 Difference]: Without dead ends: 67591 [2020-12-23 01:42:40,376 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 [2020-12-23 01:42:40,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2020-12-23 01:42:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67589. [2020-12-23 01:42:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67589 states. [2020-12-23 01:42:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 79875 transitions. [2020-12-23 01:42:42,039 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 79875 transitions. Word has length 29 [2020-12-23 01:42:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,040 INFO L481 AbstractCegarLoop]: Abstraction has 67589 states and 79875 transitions. [2020-12-23 01:42:42,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 79875 transitions. [2020-12-23 01:42:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:42:42,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 01:42:42,083 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash -756040004, now seen corresponding path program 1 times [2020-12-23 01:42:42,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106457104] [2020-12-23 01:42:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106457104] [2020-12-23 01:42:42,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509683971] [2020-12-23 01:42:42,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,123 INFO L87 Difference]: Start difference. First operand 67589 states and 79875 transitions. Second operand 3 states. [2020-12-23 01:42:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,027 INFO L93 Difference]: Finished difference Result 71689 states and 86021 transitions. [2020-12-23 01:42:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 01:42:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,153 INFO L225 Difference]: With dead ends: 71689 [2020-12-23 01:42:43,153 INFO L226 Difference]: Without dead ends: 71687 [2020-12-23 01:42:43,179 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 [2020-12-23 01:42:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71687 states. [2020-12-23 01:42:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71687 to 67589. [2020-12-23 01:42:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67589 states. [2020-12-23 01:42:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 78851 transitions. [2020-12-23 01:42:44,687 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 78851 transitions. Word has length 29 [2020-12-23 01:42:44,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:44,688 INFO L481 AbstractCegarLoop]: Abstraction has 67589 states and 78851 transitions. [2020-12-23 01:42:44,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 78851 transitions. [2020-12-23 01:42:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 01:42:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:44,721 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] [2020-12-23 01:42:44,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 01:42:44,721 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1311711408, now seen corresponding path program 1 times [2020-12-23 01:42:44,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:44,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113775417] [2020-12-23 01:42:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:44,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113775417] [2020-12-23 01:42:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:44,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:44,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114566812] [2020-12-23 01:42:44,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:44,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:44,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:44,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:44,741 INFO L87 Difference]: Start difference. First operand 67589 states and 78851 transitions. Second operand 3 states. [2020-12-23 01:42:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:45,826 INFO L93 Difference]: Finished difference Result 109575 states and 126980 transitions. [2020-12-23 01:42:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:45,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-23 01:42:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:45,971 INFO L225 Difference]: With dead ends: 109575 [2020-12-23 01:42:45,971 INFO L226 Difference]: Without dead ends: 109573 [2020-12-23 01:42:45,994 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 [2020-12-23 01:42:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2020-12-23 01:42:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 105477. [2020-12-23 01:42:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105477 states. [2020-12-23 01:42:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105477 states to 105477 states and 120835 transitions. [2020-12-23 01:42:47,976 INFO L78 Accepts]: Start accepts. Automaton has 105477 states and 120835 transitions. Word has length 30 [2020-12-23 01:42:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:47,977 INFO L481 AbstractCegarLoop]: Abstraction has 105477 states and 120835 transitions. [2020-12-23 01:42:47,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 105477 states and 120835 transitions. [2020-12-23 01:42:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 01:42:48,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:48,075 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] [2020-12-23 01:42:48,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 01:42:48,075 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:48,076 INFO L82 PathProgramCache]: Analyzing trace with hash 31847730, now seen corresponding path program 1 times [2020-12-23 01:42:48,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:48,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094507715] [2020-12-23 01:42:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:48,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094507715] [2020-12-23 01:42:48,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:48,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:48,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863794358] [2020-12-23 01:42:48,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:48,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:48,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:48,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:48,099 INFO L87 Difference]: Start difference. First operand 105477 states and 120835 transitions. Second operand 3 states. [2020-12-23 01:42:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:49,683 INFO L93 Difference]: Finished difference Result 236549 states and 268291 transitions. [2020-12-23 01:42:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:49,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-23 01:42:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:49,684 INFO L225 Difference]: With dead ends: 236549 [2020-12-23 01:42:49,684 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 01:42:49,788 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 [2020-12-23 01:42:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 01:42:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 01:42:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 01:42:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 01:42:49,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-23 01:42:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:49,790 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 01:42:49,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 01:42:49,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 01:42:49,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 01:42:49,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 01:42:49,828 INFO L189 CegarLoopUtils]: For program point L184(line 184) no Hoare annotation was computed. [2020-12-23 01:42:49,829 INFO L185 CegarLoopUtils]: At program point L184-1(lines 7 193) the Hoare annotation is: false [2020-12-23 01:42:49,829 INFO L189 CegarLoopUtils]: For program point L118-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,829 INFO L189 CegarLoopUtils]: For program point L168-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,832 INFO L189 CegarLoopUtils]: For program point L102-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,832 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 01:42:49,832 INFO L189 CegarLoopUtils]: For program point L86-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,832 INFO L189 CegarLoopUtils]: For program point L169(line 169) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L153-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L154(line 154) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L138-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L122-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L139(line 139) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L106-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L192 CegarLoopUtils]: At program point L189(lines 7 193) the Hoare annotation is: true [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L90-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,833 INFO L189 CegarLoopUtils]: For program point L173-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L174(line 174) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L158-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L192 CegarLoopUtils]: At program point L192(lines 6 193) the Hoare annotation is: true [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L159(line 159) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L143-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L110-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L94-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L144(line 144) no Hoare annotation was computed. [2020-12-23 01:42:49,834 INFO L189 CegarLoopUtils]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-12-23 01:42:49,835 INFO L189 CegarLoopUtils]: For program point L78-2(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,837 INFO L189 CegarLoopUtils]: For program point L128-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,837 INFO L189 CegarLoopUtils]: For program point L178-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,837 INFO L189 CegarLoopUtils]: For program point L129(line 129) no Hoare annotation was computed. [2020-12-23 01:42:49,837 INFO L189 CegarLoopUtils]: For program point L179(line 179) no Hoare annotation was computed. [2020-12-23 01:42:49,837 INFO L189 CegarLoopUtils]: For program point L163-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,837 INFO L189 CegarLoopUtils]: For program point L114-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L164(line 164) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L98-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L148-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L82-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L149(line 149) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L189 CegarLoopUtils]: For program point L133-1(lines 47 188) no Hoare annotation was computed. [2020-12-23 01:42:49,838 INFO L192 CegarLoopUtils]: At program point L183-1(lines 47 188) the Hoare annotation is: true [2020-12-23 01:42:49,839 INFO L189 CegarLoopUtils]: For program point L134(line 134) no Hoare annotation was computed. [2020-12-23 01:42:49,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:49 BoogieIcfgContainer [2020-12-23 01:42:49,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:42:49,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:42:49,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:42:49,868 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:42:49,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:26" (3/4) ... [2020-12-23 01:42:49,875 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 01:42:49,910 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 01:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 01:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:42:49,911 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:42:50,024 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_12.c-witness.graphml [2020-12-23 01:42:50,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:42:50,026 INFO L168 Benchmark]: Toolchain (without parser) took 24391.73 ms. Allocated memory was 169.9 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 144.8 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,027 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 169.9 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:42:50,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.70 ms. Allocated memory is still 169.9 MB. Free memory was 144.5 MB in the beginning and 133.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 169.9 MB. Free memory was 133.8 MB in the beginning and 131.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,028 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 169.9 MB. Free memory was 131.9 MB in the beginning and 130.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,028 INFO L168 Benchmark]: RCFGBuilder took 512.71 ms. Allocated memory is still 169.9 MB. Free memory was 130.6 MB in the beginning and 108.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,029 INFO L168 Benchmark]: TraceAbstraction took 23303.69 ms. Allocated memory was 169.9 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 108.1 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,029 INFO L168 Benchmark]: Witness Printer took 156.24 ms. Allocated memory is still 6.8 GB. Free memory was 5.4 GB in the beginning and 5.4 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:50,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 169.9 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.70 ms. Allocated memory is still 169.9 MB. Free memory was 144.5 MB in the beginning and 133.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 169.9 MB. Free memory was 133.8 MB in the beginning and 131.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 169.9 MB. Free memory was 131.9 MB in the beginning and 130.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 512.71 ms. Allocated memory is still 169.9 MB. Free memory was 130.6 MB in the beginning and 108.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23303.69 ms. Allocated memory was 169.9 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 108.1 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Witness Printer took 156.24 ms. Allocated memory is still 6.8 GB. Free memory was 5.4 GB in the beginning and 5.4 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.1s, OverallIterations: 33, TraceHistogramMax: 1, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3231 SDtfs, 1629 SDslu, 2174 SDs, 0 SdLazy, 175 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105477occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.2s AutomataMinimizationTime, 33 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4105 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 778 ConstructedInterpolants, 0 QuantifiedInterpolants, 40508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...