/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/locks/test_locks_8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:46:52,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:46:52,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:46:52,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:46:52,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:46:52,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:46:52,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:46:52,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:46:52,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:46:52,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:46:52,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:46:52,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:46:52,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:46:52,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:46:52,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:46:52,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:46:52,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:46:52,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:46:52,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:46:52,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:46:52,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:46:52,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:46:52,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:46:52,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:46:52,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:46:52,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:46:52,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:46:52,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:46:52,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:46:52,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:46:52,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:46:52,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:46:52,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:46:52,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:46:52,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:46:52,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:46:52,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:46:52,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:46:52,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:46:52,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:46:52,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:46:52,638 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:46:52,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:46:52,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:46:52,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:46:52,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:46:52,640 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:46:52,640 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:46:52,640 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:46:52,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:46:52,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:46:52,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:46:52,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:46:52,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:46:52,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:46:52,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:46:52,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:46:52,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:46:52,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:46:52,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:46:52,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:46:52,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:46:53,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:46:53,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:46:53,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:46:53,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:46:53,100 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:46:53,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_8.c [2021-01-07 05:46:53,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/009043f27/360325f848a744a1b29d5baab2404580/FLAG6681d3918 [2021-01-07 05:46:53,879 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:46:53,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_8.c [2021-01-07 05:46:53,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/009043f27/360325f848a744a1b29d5baab2404580/FLAG6681d3918 [2021-01-07 05:46:54,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/009043f27/360325f848a744a1b29d5baab2404580 [2021-01-07 05:46:54,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:46:54,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:46:54,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:46:54,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:46:54,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:46:54,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5464e12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54, skipping insertion in model container [2021-01-07 05:46:54,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:46:54,273 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[~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[~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,] [2021-01-07 05:46:54,440 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_8.c[3218,3231] [2021-01-07 05:46:54,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:46:54,455 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[~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[~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,] [2021-01-07 05:46:54,483 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_8.c[3218,3231] [2021-01-07 05:46:54,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:46:54,501 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:46:54,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54 WrapperNode [2021-01-07 05:46:54,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:46:54,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:46:54,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:46:54,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:46:54,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:46:54,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:46:54,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:46:54,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:46:54,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (1/1) ... [2021-01-07 05:46:54,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:46:54,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:46:54,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:46:54,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:46:54,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (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 [2021-01-07 05:46:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:46:54,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:46:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:46:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:46:55,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:46:55,248 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-07 05:46:55,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:46:55 BoogieIcfgContainer [2021-01-07 05:46:55,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:46:55,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:46:55,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:46:55,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:46:55,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:46:54" (1/3) ... [2021-01-07 05:46:55,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643686cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:46:55, skipping insertion in model container [2021-01-07 05:46:55,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:46:54" (2/3) ... [2021-01-07 05:46:55,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643686cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:46:55, skipping insertion in model container [2021-01-07 05:46:55,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:46:55" (3/3) ... [2021-01-07 05:46:55,269 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2021-01-07 05:46:55,278 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:46:55,283 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-07 05:46:55,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-07 05:46:55,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:46:55,327 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:46:55,327 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:46:55,328 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:46:55,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:46:55,328 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:46:55,328 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:46:55,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:46:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-01-07 05:46:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:46:55,352 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:55,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:46:55,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 28702379, now seen corresponding path program 1 times [2021-01-07 05:46:55,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:55,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805045689] [2021-01-07 05:46:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:55,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805045689] [2021-01-07 05:46:55,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:55,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:46:55,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113686355] [2021-01-07 05:46:55,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:46:55,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:55,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:46:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:46:55,570 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2021-01-07 05:46:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:55,587 INFO L93 Difference]: Finished difference Result 35 states and 58 transitions. [2021-01-07 05:46:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:46:55,589 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-01-07 05:46:55,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:55,601 INFO L225 Difference]: With dead ends: 35 [2021-01-07 05:46:55,601 INFO L226 Difference]: Without dead ends: 33 [2021-01-07 05:46:55,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:46:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-07 05:46:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-01-07 05:46:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-07 05:46:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2021-01-07 05:46:55,644 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 5 [2021-01-07 05:46:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:55,645 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2021-01-07 05:46:55,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:46:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2021-01-07 05:46:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:46:55,645 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:55,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:46:55,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:46:55,646 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash 889696875, now seen corresponding path program 1 times [2021-01-07 05:46:55,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:55,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513863690] [2021-01-07 05:46:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:55,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513863690] [2021-01-07 05:46:55,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:55,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:46:55,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346884982] [2021-01-07 05:46:55,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:55,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:55,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:55,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:55,715 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand 3 states. [2021-01-07 05:46:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:55,730 INFO L93 Difference]: Finished difference Result 32 states and 55 transitions. [2021-01-07 05:46:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:55,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-07 05:46:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:55,733 INFO L225 Difference]: With dead ends: 32 [2021-01-07 05:46:55,733 INFO L226 Difference]: Without dead ends: 30 [2021-01-07 05:46:55,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-07 05:46:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-01-07 05:46:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-07 05:46:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 53 transitions. [2021-01-07 05:46:55,741 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 53 transitions. Word has length 6 [2021-01-07 05:46:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:55,741 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 53 transitions. [2021-01-07 05:46:55,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 53 transitions. [2021-01-07 05:46:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:46:55,742 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:55,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:55,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:46:55,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:55,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2021-01-07 05:46:55,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:55,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010209938] [2021-01-07 05:46:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:55,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010209938] [2021-01-07 05:46:55,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:55,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:55,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004965839] [2021-01-07 05:46:55,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:55,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:55,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:55,865 INFO L87 Difference]: Start difference. First operand 30 states and 53 transitions. Second operand 3 states. [2021-01-07 05:46:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:55,912 INFO L93 Difference]: Finished difference Result 57 states and 101 transitions. [2021-01-07 05:46:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:55,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-07 05:46:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:55,919 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:46:55,919 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:46:55,921 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 [2021-01-07 05:46:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:46:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-01-07 05:46:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-07 05:46:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2021-01-07 05:46:55,939 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2021-01-07 05:46:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:55,940 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2021-01-07 05:46:55,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2021-01-07 05:46:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:46:55,941 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:55,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:55,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:46:55,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2021-01-07 05:46:55,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:55,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243949199] [2021-01-07 05:46:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243949199] [2021-01-07 05:46:56,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135574698] [2021-01-07 05:46:56,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,018 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2021-01-07 05:46:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,045 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2021-01-07 05:46:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-07 05:46:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,047 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:46:56,047 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:46:56,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:46:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-01-07 05:46:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:46:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2021-01-07 05:46:56,056 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2021-01-07 05:46:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,056 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2021-01-07 05:46:56,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2021-01-07 05:46:56,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:46:56,057 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:46:56,058 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2021-01-07 05:46:56,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219044076] [2021-01-07 05:46:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219044076] [2021-01-07 05:46:56,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519188292] [2021-01-07 05:46:56,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,128 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2021-01-07 05:46:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,177 INFO L93 Difference]: Finished difference Result 60 states and 101 transitions. [2021-01-07 05:46:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:46:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,182 INFO L225 Difference]: With dead ends: 60 [2021-01-07 05:46:56,182 INFO L226 Difference]: Without dead ends: 60 [2021-01-07 05:46:56,183 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 [2021-01-07 05:46:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-07 05:46:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-01-07 05:46:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:46:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2021-01-07 05:46:56,196 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2021-01-07 05:46:56,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,197 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2021-01-07 05:46:56,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,197 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2021-01-07 05:46:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:46:56,199 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:46:56,199 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2021-01-07 05:46:56,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216117600] [2021-01-07 05:46:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216117600] [2021-01-07 05:46:56,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591752747] [2021-01-07 05:46:56,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,287 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2021-01-07 05:46:56,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,305 INFO L93 Difference]: Finished difference Result 107 states and 186 transitions. [2021-01-07 05:46:56,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:46:56,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,307 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:46:56,307 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:46:56,308 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 [2021-01-07 05:46:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:46:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2021-01-07 05:46:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:46:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2021-01-07 05:46:56,315 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2021-01-07 05:46:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,316 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2021-01-07 05:46:56,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2021-01-07 05:46:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:46:56,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:46:56,318 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,318 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2021-01-07 05:46:56,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109395236] [2021-01-07 05:46:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109395236] [2021-01-07 05:46:56,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31623207] [2021-01-07 05:46:56,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,355 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2021-01-07 05:46:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,370 INFO L93 Difference]: Finished difference Result 109 states and 184 transitions. [2021-01-07 05:46:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-07 05:46:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,372 INFO L225 Difference]: With dead ends: 109 [2021-01-07 05:46:56,372 INFO L226 Difference]: Without dead ends: 109 [2021-01-07 05:46:56,372 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 [2021-01-07 05:46:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-07 05:46:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-01-07 05:46:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-07 05:46:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2021-01-07 05:46:56,380 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2021-01-07 05:46:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,380 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2021-01-07 05:46:56,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2021-01-07 05:46:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:46:56,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:46:56,382 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2021-01-07 05:46:56,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910134398] [2021-01-07 05:46:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910134398] [2021-01-07 05:46:56,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078121090] [2021-01-07 05:46:56,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,416 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2021-01-07 05:46:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,436 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2021-01-07 05:46:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-07 05:46:56,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,437 INFO L225 Difference]: With dead ends: 111 [2021-01-07 05:46:56,438 INFO L226 Difference]: Without dead ends: 111 [2021-01-07 05:46:56,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-07 05:46:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-01-07 05:46:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-07 05:46:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2021-01-07 05:46:56,449 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2021-01-07 05:46:56,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,450 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2021-01-07 05:46:56,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2021-01-07 05:46:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:46:56,451 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:46:56,452 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,453 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2021-01-07 05:46:56,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028934692] [2021-01-07 05:46:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028934692] [2021-01-07 05:46:56,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032241489] [2021-01-07 05:46:56,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,485 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2021-01-07 05:46:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,501 INFO L93 Difference]: Finished difference Result 207 states and 340 transitions. [2021-01-07 05:46:56,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-07 05:46:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,503 INFO L225 Difference]: With dead ends: 207 [2021-01-07 05:46:56,503 INFO L226 Difference]: Without dead ends: 207 [2021-01-07 05:46:56,504 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 [2021-01-07 05:46:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-01-07 05:46:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-01-07 05:46:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-01-07 05:46:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2021-01-07 05:46:56,526 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2021-01-07 05:46:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,526 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2021-01-07 05:46:56,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2021-01-07 05:46:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:46:56,530 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:46:56,531 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2021-01-07 05:46:56,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645033844] [2021-01-07 05:46:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645033844] [2021-01-07 05:46:56,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337535322] [2021-01-07 05:46:56,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,594 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2021-01-07 05:46:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,620 INFO L93 Difference]: Finished difference Result 255 states and 424 transitions. [2021-01-07 05:46:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-07 05:46:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,625 INFO L225 Difference]: With dead ends: 255 [2021-01-07 05:46:56,626 INFO L226 Difference]: Without dead ends: 255 [2021-01-07 05:46:56,626 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 [2021-01-07 05:46:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-01-07 05:46:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2021-01-07 05:46:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-01-07 05:46:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2021-01-07 05:46:56,647 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2021-01-07 05:46:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,648 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2021-01-07 05:46:56,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2021-01-07 05:46:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:46:56,650 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:46:56,651 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2021-01-07 05:46:56,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687288594] [2021-01-07 05:46:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687288594] [2021-01-07 05:46:56,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628606761] [2021-01-07 05:46:56,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,721 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2021-01-07 05:46:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,747 INFO L93 Difference]: Finished difference Result 371 states and 608 transitions. [2021-01-07 05:46:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:46:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,752 INFO L225 Difference]: With dead ends: 371 [2021-01-07 05:46:56,752 INFO L226 Difference]: Without dead ends: 371 [2021-01-07 05:46:56,753 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 [2021-01-07 05:46:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-01-07 05:46:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2021-01-07 05:46:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2021-01-07 05:46:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2021-01-07 05:46:56,791 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2021-01-07 05:46:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,791 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2021-01-07 05:46:56,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2021-01-07 05:46:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:46:56,794 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:46:56,795 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2021-01-07 05:46:56,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895948131] [2021-01-07 05:46:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895948131] [2021-01-07 05:46:56,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388311743] [2021-01-07 05:46:56,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,890 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2021-01-07 05:46:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,912 INFO L93 Difference]: Finished difference Result 395 states and 620 transitions. [2021-01-07 05:46:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-07 05:46:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,916 INFO L225 Difference]: With dead ends: 395 [2021-01-07 05:46:56,917 INFO L226 Difference]: Without dead ends: 395 [2021-01-07 05:46:56,917 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 [2021-01-07 05:46:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-01-07 05:46:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2021-01-07 05:46:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2021-01-07 05:46:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2021-01-07 05:46:56,936 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2021-01-07 05:46:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:56,936 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2021-01-07 05:46:56,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2021-01-07 05:46:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:46:56,939 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:56,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:56,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-07 05:46:56,940 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:56,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2021-01-07 05:46:56,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:56,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603860619] [2021-01-07 05:46:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:56,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603860619] [2021-01-07 05:46:56,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:56,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:56,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876307102] [2021-01-07 05:46:56,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:56,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:56,972 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2021-01-07 05:46:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:56,989 INFO L93 Difference]: Finished difference Result 407 states and 628 transitions. [2021-01-07 05:46:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:56,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:46:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:56,993 INFO L225 Difference]: With dead ends: 407 [2021-01-07 05:46:56,993 INFO L226 Difference]: Without dead ends: 407 [2021-01-07 05:46:56,993 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 [2021-01-07 05:46:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-01-07 05:46:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2021-01-07 05:46:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2021-01-07 05:46:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2021-01-07 05:46:57,011 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2021-01-07 05:46:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,012 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2021-01-07 05:46:57,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2021-01-07 05:46:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:46:57,015 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:57,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:46:57,016 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2021-01-07 05:46:57,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712909345] [2021-01-07 05:46:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712909345] [2021-01-07 05:46:57,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238514167] [2021-01-07 05:46:57,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,050 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2021-01-07 05:46:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,081 INFO L93 Difference]: Finished difference Result 711 states and 1100 transitions. [2021-01-07 05:46:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:46:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,097 INFO L225 Difference]: With dead ends: 711 [2021-01-07 05:46:57,097 INFO L226 Difference]: Without dead ends: 711 [2021-01-07 05:46:57,098 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 [2021-01-07 05:46:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-01-07 05:46:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2021-01-07 05:46:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2021-01-07 05:46:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2021-01-07 05:46:57,135 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2021-01-07 05:46:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,135 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2021-01-07 05:46:57,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2021-01-07 05:46:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:46:57,140 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:46:57,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:46:57,140 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2021-01-07 05:46:57,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051515452] [2021-01-07 05:46:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051515452] [2021-01-07 05:46:57,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506817389] [2021-01-07 05:46:57,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,174 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2021-01-07 05:46:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,192 INFO L93 Difference]: Finished difference Result 775 states and 1140 transitions. [2021-01-07 05:46:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:46:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,197 INFO L225 Difference]: With dead ends: 775 [2021-01-07 05:46:57,197 INFO L226 Difference]: Without dead ends: 775 [2021-01-07 05:46:57,198 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 [2021-01-07 05:46:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-01-07 05:46:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2021-01-07 05:46:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2021-01-07 05:46:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2021-01-07 05:46:57,222 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2021-01-07 05:46:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,223 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2021-01-07 05:46:57,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2021-01-07 05:46:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:46:57,227 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,227 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] [2021-01-07 05:46:57,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:46:57,227 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2021-01-07 05:46:57,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366063720] [2021-01-07 05:46:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366063720] [2021-01-07 05:46:57,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61000778] [2021-01-07 05:46:57,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,274 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2021-01-07 05:46:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,297 INFO L93 Difference]: Finished difference Result 791 states and 1140 transitions. [2021-01-07 05:46:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:46:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,302 INFO L225 Difference]: With dead ends: 791 [2021-01-07 05:46:57,303 INFO L226 Difference]: Without dead ends: 791 [2021-01-07 05:46:57,303 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 [2021-01-07 05:46:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-01-07 05:46:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2021-01-07 05:46:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2021-01-07 05:46:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2021-01-07 05:46:57,327 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2021-01-07 05:46:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,327 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2021-01-07 05:46:57,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2021-01-07 05:46:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:46:57,331 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,332 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] [2021-01-07 05:46:57,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:46:57,333 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2021-01-07 05:46:57,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788808633] [2021-01-07 05:46:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788808633] [2021-01-07 05:46:57,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824808045] [2021-01-07 05:46:57,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,401 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2021-01-07 05:46:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,431 INFO L93 Difference]: Finished difference Result 1351 states and 1940 transitions. [2021-01-07 05:46:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:46:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,438 INFO L225 Difference]: With dead ends: 1351 [2021-01-07 05:46:57,439 INFO L226 Difference]: Without dead ends: 1351 [2021-01-07 05:46:57,439 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 [2021-01-07 05:46:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-01-07 05:46:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2021-01-07 05:46:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2021-01-07 05:46:57,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2021-01-07 05:46:57,468 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2021-01-07 05:46:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,470 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2021-01-07 05:46:57,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2021-01-07 05:46:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:46:57,472 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,472 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] [2021-01-07 05:46:57,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:46:57,473 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2021-01-07 05:46:57,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913019471] [2021-01-07 05:46:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913019471] [2021-01-07 05:46:57,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023779627] [2021-01-07 05:46:57,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,530 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2021-01-07 05:46:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,550 INFO L93 Difference]: Finished difference Result 1511 states and 2052 transitions. [2021-01-07 05:46:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:46:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,558 INFO L225 Difference]: With dead ends: 1511 [2021-01-07 05:46:57,558 INFO L226 Difference]: Without dead ends: 1511 [2021-01-07 05:46:57,558 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 [2021-01-07 05:46:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-01-07 05:46:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2021-01-07 05:46:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2021-01-07 05:46:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2021-01-07 05:46:57,593 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2021-01-07 05:46:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,593 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2021-01-07 05:46:57,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2021-01-07 05:46:57,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:46:57,595 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,595 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] [2021-01-07 05:46:57,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:46:57,596 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2021-01-07 05:46:57,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178830186] [2021-01-07 05:46:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178830186] [2021-01-07 05:46:57,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036412562] [2021-01-07 05:46:57,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,621 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2021-01-07 05:46:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,640 INFO L93 Difference]: Finished difference Result 1543 states and 2052 transitions. [2021-01-07 05:46:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-07 05:46:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,647 INFO L225 Difference]: With dead ends: 1543 [2021-01-07 05:46:57,647 INFO L226 Difference]: Without dead ends: 1543 [2021-01-07 05:46:57,648 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 [2021-01-07 05:46:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-01-07 05:46:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2021-01-07 05:46:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2021-01-07 05:46:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2021-01-07 05:46:57,700 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2021-01-07 05:46:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,700 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2021-01-07 05:46:57,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2021-01-07 05:46:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:46:57,702 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,702 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] [2021-01-07 05:46:57,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:46:57,704 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2021-01-07 05:46:57,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102153547] [2021-01-07 05:46:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102153547] [2021-01-07 05:46:57,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100756681] [2021-01-07 05:46:57,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,763 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2021-01-07 05:46:57,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,808 INFO L93 Difference]: Finished difference Result 2567 states and 3364 transitions. [2021-01-07 05:46:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-07 05:46:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,825 INFO L225 Difference]: With dead ends: 2567 [2021-01-07 05:46:57,826 INFO L226 Difference]: Without dead ends: 2567 [2021-01-07 05:46:57,826 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 [2021-01-07 05:46:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-01-07 05:46:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2021-01-07 05:46:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2021-01-07 05:46:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2021-01-07 05:46:57,892 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2021-01-07 05:46:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:57,894 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2021-01-07 05:46:57,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2021-01-07 05:46:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:46:57,899 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:57,899 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] [2021-01-07 05:46:57,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:46:57,899 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2021-01-07 05:46:57,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:57,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533033940] [2021-01-07 05:46:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:57,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533033940] [2021-01-07 05:46:57,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:57,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:57,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893536369] [2021-01-07 05:46:57,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:57,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:57,941 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2021-01-07 05:46:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:57,966 INFO L93 Difference]: Finished difference Result 2951 states and 3652 transitions. [2021-01-07 05:46:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:57,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-07 05:46:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:57,981 INFO L225 Difference]: With dead ends: 2951 [2021-01-07 05:46:57,982 INFO L226 Difference]: Without dead ends: 2951 [2021-01-07 05:46:57,982 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 [2021-01-07 05:46:57,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-01-07 05:46:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2021-01-07 05:46:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2021-01-07 05:46:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2021-01-07 05:46:58,057 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2021-01-07 05:46:58,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:58,057 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2021-01-07 05:46:58,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2021-01-07 05:46:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:46:58,061 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:58,061 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] [2021-01-07 05:46:58,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-07 05:46:58,062 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:58,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2021-01-07 05:46:58,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:58,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412423114] [2021-01-07 05:46:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:58,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412423114] [2021-01-07 05:46:58,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:58,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:58,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880266852] [2021-01-07 05:46:58,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:58,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:58,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:58,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:58,101 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2021-01-07 05:46:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:58,128 INFO L93 Difference]: Finished difference Result 3015 states and 3652 transitions. [2021-01-07 05:46:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:58,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-07 05:46:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:58,142 INFO L225 Difference]: With dead ends: 3015 [2021-01-07 05:46:58,142 INFO L226 Difference]: Without dead ends: 3015 [2021-01-07 05:46:58,149 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 [2021-01-07 05:46:58,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2021-01-07 05:46:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2021-01-07 05:46:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2021-01-07 05:46:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2021-01-07 05:46:58,213 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2021-01-07 05:46:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:58,214 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2021-01-07 05:46:58,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2021-01-07 05:46:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:46:58,218 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:58,218 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] [2021-01-07 05:46:58,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-07 05:46:58,219 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:58,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2021-01-07 05:46:58,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:58,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066550242] [2021-01-07 05:46:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:58,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066550242] [2021-01-07 05:46:58,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:58,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:58,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114290280] [2021-01-07 05:46:58,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:58,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:58,268 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2021-01-07 05:46:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:58,304 INFO L93 Difference]: Finished difference Result 4869 states and 5699 transitions. [2021-01-07 05:46:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:58,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-07 05:46:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:58,326 INFO L225 Difference]: With dead ends: 4869 [2021-01-07 05:46:58,327 INFO L226 Difference]: Without dead ends: 4869 [2021-01-07 05:46:58,327 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 [2021-01-07 05:46:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2021-01-07 05:46:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2021-01-07 05:46:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2021-01-07 05:46:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2021-01-07 05:46:58,460 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2021-01-07 05:46:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:58,460 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2021-01-07 05:46:58,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2021-01-07 05:46:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:46:58,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:46:58,468 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] [2021-01-07 05:46:58,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-07 05:46:58,468 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:46:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:46:58,469 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2021-01-07 05:46:58,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:46:58,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867232670] [2021-01-07 05:46:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:46:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:46:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:46:58,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867232670] [2021-01-07 05:46:58,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:46:58,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:46:58,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617819805] [2021-01-07 05:46:58,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:46:58,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:46:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:46:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:46:58,491 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2021-01-07 05:46:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:46:58,538 INFO L93 Difference]: Finished difference Result 5763 states and 6402 transitions. [2021-01-07 05:46:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:46:58,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-07 05:46:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:46:58,539 INFO L225 Difference]: With dead ends: 5763 [2021-01-07 05:46:58,540 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:46:58,540 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 [2021-01-07 05:46:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:46:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:46:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:46:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:46:58,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-01-07 05:46:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:46:58,541 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:46:58,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:46:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:46:58,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:46:58,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-07 05:46:58,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:46:58 BoogieIcfgContainer [2021-01-07 05:46:58,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:46:58,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:46:58,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:46:58,549 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:46:58,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:46:55" (3/4) ... [2021-01-07 05:46:58,553 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:46:58,566 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-07 05:46:58,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:46:58,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-01-07 05:46:58,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-07 05:46:58,619 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_8.c-witness.graphml [2021-01-07 05:46:58,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:46:58,621 INFO L168 Benchmark]: Toolchain (without parser) took 4395.64 ms. Allocated memory was 154.1 MB in the beginning and 219.2 MB in the end (delta: 65.0 MB). Free memory was 129.5 MB in the beginning and 147.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 48.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,621 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:46:58,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.05 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,623 INFO L168 Benchmark]: Boogie Preprocessor took 59.96 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,623 INFO L168 Benchmark]: RCFGBuilder took 626.83 ms. Allocated memory is still 154.1 MB. Free memory was 116.1 MB in the beginning and 135.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,624 INFO L168 Benchmark]: TraceAbstraction took 3293.19 ms. Allocated memory was 154.1 MB in the beginning and 219.2 MB in the end (delta: 65.0 MB). Free memory was 134.5 MB in the beginning and 151.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,624 INFO L168 Benchmark]: Witness Printer took 70.80 ms. Allocated memory is still 219.2 MB. Free memory was 151.2 MB in the beginning and 147.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-07 05:46:58,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.05 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.96 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.83 ms. Allocated memory is still 154.1 MB. Free memory was 116.1 MB in the beginning and 135.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3293.19 ms. Allocated memory was 154.1 MB in the beginning and 219.2 MB in the end (delta: 65.0 MB). Free memory was 134.5 MB in the beginning and 151.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * Witness Printer took 70.80 ms. Allocated memory is still 219.2 MB. Free memory was 151.2 MB in the beginning and 147.5 MB in the end (delta: 3.7 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: 135]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 24, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1579 SDtfs, 766 SDslu, 960 SDs, 0 SdLazy, 118 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 24 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 14448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 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...