/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_12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:35:21,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:35:21,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:35:21,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:35:21,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:35:21,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:35:21,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:35:21,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:35:21,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:35:21,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:35:21,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:35:21,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:35:21,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:35:21,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:35:21,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:35:21,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:35:21,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:35:21,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:35:21,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:35:21,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:35:21,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:35:21,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:35:21,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:35:21,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:35:21,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 17:35:21,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 17:35:21,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 17:35:21,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 17:35:21,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 17:35:21,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 17:35:21,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:35:21,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:35:21,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:35:21,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:35:21,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:35:21,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:35:21,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:35:21,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:35:21,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:35:21,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:35:21,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:35:21,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:35:22,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:35:22,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:35:22,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:35:22,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:35:22,004 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:35:22,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:35:22,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:35:22,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:35:22,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:35:22,005 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:35:22,006 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:35:22,006 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:35:22,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:35:22,006 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:35:22,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:35:22,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:35:22,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:35:22,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:35:22,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:35:22,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:35:22,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:35:22,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:35:22,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:35:22,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:35:22,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:35:22,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:35:22,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:35:22,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:35:22,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:35:22,561 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:35:22,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2020-12-23 17:35:22,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2e7d1c218/aa8a8060a53843898d1c6060ecebb2f3/FLAGd818ed5a6 [2020-12-23 17:35:23,245 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:35:23,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2020-12-23 17:35:23,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2e7d1c218/aa8a8060a53843898d1c6060ecebb2f3/FLAGd818ed5a6 [2020-12-23 17:35:23,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2e7d1c218/aa8a8060a53843898d1c6060ecebb2f3 [2020-12-23 17:35:23,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:35:23,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:35:23,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:23,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:35:23,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:35:23,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:23" (1/1) ... [2020-12-23 17:35:23,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139cd676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:23, skipping insertion in model container [2020-12-23 17:35:23,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:23" (1/1) ... [2020-12-23 17:35:23,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:35:23,724 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] [2020-12-23 17:35:24,006 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2020-12-23 17:35:24,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:24,031 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk11~0,] left hand side expression in assignment: lhs: VariableLHS[~lk12~0,] [2020-12-23 17:35:24,062 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2020-12-23 17:35:24,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:24,080 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:35:24,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24 WrapperNode [2020-12-23 17:35:24,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:24,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:24,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:35:24,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:35:24,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:24,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:35:24,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:35:24,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:35:24,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... [2020-12-23 17:35:24,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:35:24,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:35:24,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:35:24,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:35:24,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:35:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:35:24,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:35:24,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:35:24,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:35:24,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:35:24,723 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 17:35:24,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:24 BoogieIcfgContainer [2020-12-23 17:35:24,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:35:24,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:35:24,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:35:24,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:35:24,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:35:23" (1/3) ... [2020-12-23 17:35:24,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7532bf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:24, skipping insertion in model container [2020-12-23 17:35:24,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:24" (2/3) ... [2020-12-23 17:35:24,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7532bf1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:24, skipping insertion in model container [2020-12-23 17:35:24,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:24" (3/3) ... [2020-12-23 17:35:24,747 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2020-12-23 17:35:24,755 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:35:24,761 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 17:35:24,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 17:35:24,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:35:24,810 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:35:24,810 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:35:24,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:35:24,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:35:24,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:35:24,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:35:24,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:35:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-12-23 17:35:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:35:24,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:35:24,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,846 INFO L82 PathProgramCache]: Analyzing trace with hash 28704555, now seen corresponding path program 1 times [2020-12-23 17:35:24,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071243468] [2020-12-23 17:35:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:25,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071243468] [2020-12-23 17:35:25,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:25,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372231671] [2020-12-23 17:35:25,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:35:25,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:35:25,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:35:25,091 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-12-23 17:35:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,114 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-12-23 17:35:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:35:25,116 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-23 17:35:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,128 INFO L225 Difference]: With dead ends: 47 [2020-12-23 17:35:25,129 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 17:35:25,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:35:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 17:35:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-23 17:35:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 17:35:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 80 transitions. [2020-12-23 17:35:25,185 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 80 transitions. Word has length 5 [2020-12-23 17:35:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,187 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 80 transitions. [2020-12-23 17:35:25,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:35:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 80 transitions. [2020-12-23 17:35:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 17:35:25,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 17:35:25,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:35:25,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash 889699051, now seen corresponding path program 1 times [2020-12-23 17:35:25,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145071842] [2020-12-23 17:35:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:25,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145071842] [2020-12-23 17:35:25,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:25,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614081773] [2020-12-23 17:35:25,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,320 INFO L87 Difference]: Start difference. First operand 45 states and 80 transitions. Second operand 3 states. [2020-12-23 17:35:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,350 INFO L93 Difference]: Finished difference Result 44 states and 79 transitions. [2020-12-23 17:35:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 17:35:25,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,354 INFO L225 Difference]: With dead ends: 44 [2020-12-23 17:35:25,354 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 17:35:25,356 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 [2020-12-23 17:35:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 17:35:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-23 17:35:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 17:35:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 77 transitions. [2020-12-23 17:35:25,372 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 77 transitions. Word has length 6 [2020-12-23 17:35:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,372 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 77 transitions. [2020-12-23 17:35:25,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 77 transitions. [2020-12-23 17:35:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:25,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:25,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:35:25,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1341605783, now seen corresponding path program 1 times [2020-12-23 17:35:25,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218311600] [2020-12-23 17:35:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218311600] [2020-12-23 17:35:25,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974611143] [2020-12-23 17:35:25,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,516 INFO L87 Difference]: Start difference. First operand 42 states and 77 transitions. Second operand 3 states. [2020-12-23 17:35:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,557 INFO L93 Difference]: Finished difference Result 81 states and 149 transitions. [2020-12-23 17:35:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,562 INFO L225 Difference]: With dead ends: 81 [2020-12-23 17:35:25,562 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 17:35:25,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 17:35:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2020-12-23 17:35:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 17:35:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 102 transitions. [2020-12-23 17:35:25,580 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 102 transitions. Word has length 19 [2020-12-23 17:35:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,581 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 102 transitions. [2020-12-23 17:35:25,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 102 transitions. [2020-12-23 17:35:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:25,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:25,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:35:25,584 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash 61742105, now seen corresponding path program 1 times [2020-12-23 17:35:25,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901550172] [2020-12-23 17:35:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:25,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901550172] [2020-12-23 17:35:25,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972864939] [2020-12-23 17:35:25,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,696 INFO L87 Difference]: Start difference. First operand 55 states and 102 transitions. Second operand 3 states. [2020-12-23 17:35:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,734 INFO L93 Difference]: Finished difference Result 81 states and 147 transitions. [2020-12-23 17:35:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,739 INFO L225 Difference]: With dead ends: 81 [2020-12-23 17:35:25,739 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 17:35:25,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 17:35:25,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-12-23 17:35:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 17:35:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 146 transitions. [2020-12-23 17:35:25,758 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 146 transitions. Word has length 19 [2020-12-23 17:35:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,759 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 146 transitions. [2020-12-23 17:35:25,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 146 transitions. [2020-12-23 17:35:25,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:25,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:25,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:35:25,763 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1359680987, now seen corresponding path program 1 times [2020-12-23 17:35:25,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203719378] [2020-12-23 17:35:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:25,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203719378] [2020-12-23 17:35:25,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943026121] [2020-12-23 17:35:25,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,853 INFO L87 Difference]: Start difference. First operand 79 states and 146 transitions. Second operand 3 states. [2020-12-23 17:35:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,888 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2020-12-23 17:35:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,891 INFO L225 Difference]: With dead ends: 84 [2020-12-23 17:35:25,891 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 17:35:25,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 17:35:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-12-23 17:35:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 17:35:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 148 transitions. [2020-12-23 17:35:25,909 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 148 transitions. Word has length 20 [2020-12-23 17:35:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,909 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 148 transitions. [2020-12-23 17:35:25,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 148 transitions. [2020-12-23 17:35:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:25,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:25,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:35:25,911 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1914217955, now seen corresponding path program 1 times [2020-12-23 17:35:25,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814095903] [2020-12-23 17:35:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:25,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814095903] [2020-12-23 17:35:25,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614578622] [2020-12-23 17:35:25,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,950 INFO L87 Difference]: Start difference. First operand 82 states and 148 transitions. Second operand 3 states. [2020-12-23 17:35:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,967 INFO L93 Difference]: Finished difference Result 155 states and 282 transitions. [2020-12-23 17:35:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,969 INFO L225 Difference]: With dead ends: 155 [2020-12-23 17:35:25,969 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 17:35:25,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 17:35:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-12-23 17:35:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 17:35:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 197 transitions. [2020-12-23 17:35:25,980 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 197 transitions. Word has length 20 [2020-12-23 17:35:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,980 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 197 transitions. [2020-12-23 17:35:25,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 197 transitions. [2020-12-23 17:35:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:25,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:25,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:35:25,987 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,988 INFO L82 PathProgramCache]: Analyzing trace with hash 634354277, now seen corresponding path program 1 times [2020-12-23 17:35:25,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578071070] [2020-12-23 17:35:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578071070] [2020-12-23 17:35:26,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551910159] [2020-12-23 17:35:26,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,063 INFO L87 Difference]: Start difference. First operand 109 states and 197 transitions. Second operand 3 states. [2020-12-23 17:35:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,078 INFO L93 Difference]: Finished difference Result 157 states and 280 transitions. [2020-12-23 17:35:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:26,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,080 INFO L225 Difference]: With dead ends: 157 [2020-12-23 17:35:26,080 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 17:35:26,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 17:35:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-12-23 17:35:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 17:35:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 279 transitions. [2020-12-23 17:35:26,097 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 279 transitions. Word has length 20 [2020-12-23 17:35:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,097 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 279 transitions. [2020-12-23 17:35:26,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 279 transitions. [2020-12-23 17:35:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:35:26,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:35:26,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash -788572498, now seen corresponding path program 1 times [2020-12-23 17:35:26,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727080052] [2020-12-23 17:35:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727080052] [2020-12-23 17:35:26,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682740949] [2020-12-23 17:35:26,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,134 INFO L87 Difference]: Start difference. First operand 155 states and 279 transitions. Second operand 3 states. [2020-12-23 17:35:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,162 INFO L93 Difference]: Finished difference Result 159 states and 280 transitions. [2020-12-23 17:35:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:35:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,169 INFO L225 Difference]: With dead ends: 159 [2020-12-23 17:35:26,169 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 17:35:26,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 17:35:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-12-23 17:35:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 17:35:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2020-12-23 17:35:26,187 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 21 [2020-12-23 17:35:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,188 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2020-12-23 17:35:26,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2020-12-23 17:35:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:35:26,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:35:26,190 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1809640852, now seen corresponding path program 1 times [2020-12-23 17:35:26,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163461725] [2020-12-23 17:35:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163461725] [2020-12-23 17:35:26,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515854845] [2020-12-23 17:35:26,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,221 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 3 states. [2020-12-23 17:35:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,242 INFO L93 Difference]: Finished difference Result 303 states and 532 transitions. [2020-12-23 17:35:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:35:26,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,245 INFO L225 Difference]: With dead ends: 303 [2020-12-23 17:35:26,245 INFO L226 Difference]: Without dead ends: 303 [2020-12-23 17:35:26,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-23 17:35:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2020-12-23 17:35:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-12-23 17:35:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 531 transitions. [2020-12-23 17:35:26,270 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 531 transitions. Word has length 21 [2020-12-23 17:35:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,270 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 531 transitions. [2020-12-23 17:35:26,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 531 transitions. [2020-12-23 17:35:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:35:26,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:35:26,273 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,274 INFO L82 PathProgramCache]: Analyzing trace with hash -529777174, now seen corresponding path program 1 times [2020-12-23 17:35:26,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020247351] [2020-12-23 17:35:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020247351] [2020-12-23 17:35:26,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965231200] [2020-12-23 17:35:26,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,303 INFO L87 Difference]: Start difference. First operand 301 states and 531 transitions. Second operand 3 states. [2020-12-23 17:35:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,316 INFO L93 Difference]: Finished difference Result 383 states and 680 transitions. [2020-12-23 17:35:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:35:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,320 INFO L225 Difference]: With dead ends: 383 [2020-12-23 17:35:26,320 INFO L226 Difference]: Without dead ends: 383 [2020-12-23 17:35:26,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-12-23 17:35:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2020-12-23 17:35:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-12-23 17:35:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 527 transitions. [2020-12-23 17:35:26,330 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 527 transitions. Word has length 21 [2020-12-23 17:35:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,331 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 527 transitions. [2020-12-23 17:35:26,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 527 transitions. [2020-12-23 17:35:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:35:26,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,332 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, 1, 1] [2020-12-23 17:35:26,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:35:26,333 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,333 INFO L82 PathProgramCache]: Analyzing trace with hash -264078182, now seen corresponding path program 1 times [2020-12-23 17:35:26,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084564337] [2020-12-23 17:35:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084564337] [2020-12-23 17:35:26,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310346284] [2020-12-23 17:35:26,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,362 INFO L87 Difference]: Start difference. First operand 301 states and 527 transitions. Second operand 3 states. [2020-12-23 17:35:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,379 INFO L93 Difference]: Finished difference Result 563 states and 992 transitions. [2020-12-23 17:35:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 17:35:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,383 INFO L225 Difference]: With dead ends: 563 [2020-12-23 17:35:26,383 INFO L226 Difference]: Without dead ends: 563 [2020-12-23 17:35:26,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-23 17:35:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 417. [2020-12-23 17:35:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-12-23 17:35:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 719 transitions. [2020-12-23 17:35:26,397 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 719 transitions. Word has length 22 [2020-12-23 17:35:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,398 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 719 transitions. [2020-12-23 17:35:26,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 719 transitions. [2020-12-23 17:35:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:35:26,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 17:35:26,400 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1543941860, now seen corresponding path program 1 times [2020-12-23 17:35:26,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123105058] [2020-12-23 17:35:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123105058] [2020-12-23 17:35:26,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722821266] [2020-12-23 17:35:26,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,429 INFO L87 Difference]: Start difference. First operand 417 states and 719 transitions. Second operand 3 states. [2020-12-23 17:35:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,445 INFO L93 Difference]: Finished difference Result 587 states and 1004 transitions. [2020-12-23 17:35:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 17:35:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,449 INFO L225 Difference]: With dead ends: 587 [2020-12-23 17:35:26,449 INFO L226 Difference]: Without dead ends: 587 [2020-12-23 17:35:26,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-12-23 17:35:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2020-12-23 17:35:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-12-23 17:35:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1003 transitions. [2020-12-23 17:35:26,464 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1003 transitions. Word has length 22 [2020-12-23 17:35:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,464 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1003 transitions. [2020-12-23 17:35:26,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1003 transitions. [2020-12-23 17:35:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:35:26,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:35:26,466 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,467 INFO L82 PathProgramCache]: Analyzing trace with hash 403724673, now seen corresponding path program 1 times [2020-12-23 17:35:26,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100045384] [2020-12-23 17:35:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100045384] [2020-12-23 17:35:26,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573313717] [2020-12-23 17:35:26,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,492 INFO L87 Difference]: Start difference. First operand 585 states and 1003 transitions. Second operand 3 states. [2020-12-23 17:35:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,506 INFO L93 Difference]: Finished difference Result 599 states and 1012 transitions. [2020-12-23 17:35:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 17:35:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,510 INFO L225 Difference]: With dead ends: 599 [2020-12-23 17:35:26,510 INFO L226 Difference]: Without dead ends: 599 [2020-12-23 17:35:26,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-23 17:35:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-23 17:35:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-23 17:35:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1011 transitions. [2020-12-23 17:35:26,525 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1011 transitions. Word has length 23 [2020-12-23 17:35:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,525 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 1011 transitions. [2020-12-23 17:35:26,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1011 transitions. [2020-12-23 17:35:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:35:26,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 17:35:26,527 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash -617343681, now seen corresponding path program 1 times [2020-12-23 17:35:26,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012275055] [2020-12-23 17:35:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012275055] [2020-12-23 17:35:26,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330993795] [2020-12-23 17:35:26,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,552 INFO L87 Difference]: Start difference. First operand 597 states and 1011 transitions. Second operand 3 states. [2020-12-23 17:35:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,570 INFO L93 Difference]: Finished difference Result 1095 states and 1868 transitions. [2020-12-23 17:35:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 17:35:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,577 INFO L225 Difference]: With dead ends: 1095 [2020-12-23 17:35:26,577 INFO L226 Difference]: Without dead ends: 1095 [2020-12-23 17:35:26,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-12-23 17:35:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 837. [2020-12-23 17:35:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-12-23 17:35:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1387 transitions. [2020-12-23 17:35:26,602 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1387 transitions. Word has length 23 [2020-12-23 17:35:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,603 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1387 transitions. [2020-12-23 17:35:26,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1387 transitions. [2020-12-23 17:35:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:35:26,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 17:35:26,606 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1897207359, now seen corresponding path program 1 times [2020-12-23 17:35:26,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127973128] [2020-12-23 17:35:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127973128] [2020-12-23 17:35:26,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197049948] [2020-12-23 17:35:26,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,657 INFO L87 Difference]: Start difference. First operand 837 states and 1387 transitions. Second operand 3 states. [2020-12-23 17:35:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,674 INFO L93 Difference]: Finished difference Result 1159 states and 1908 transitions. [2020-12-23 17:35:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 17:35:26,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,682 INFO L225 Difference]: With dead ends: 1159 [2020-12-23 17:35:26,682 INFO L226 Difference]: Without dead ends: 1159 [2020-12-23 17:35:26,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-23 17:35:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2020-12-23 17:35:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-12-23 17:35:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2020-12-23 17:35:26,714 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 23 [2020-12-23 17:35:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,716 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2020-12-23 17:35:26,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2020-12-23 17:35:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:35:26,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:35:26,718 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1957570863, now seen corresponding path program 1 times [2020-12-23 17:35:26,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480403873] [2020-12-23 17:35:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480403873] [2020-12-23 17:35:26,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013884873] [2020-12-23 17:35:26,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,765 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand 3 states. [2020-12-23 17:35:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,796 INFO L93 Difference]: Finished difference Result 1175 states and 1908 transitions. [2020-12-23 17:35:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 17:35:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,802 INFO L225 Difference]: With dead ends: 1175 [2020-12-23 17:35:26,803 INFO L226 Difference]: Without dead ends: 1175 [2020-12-23 17:35:26,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-12-23 17:35:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2020-12-23 17:35:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-12-23 17:35:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1907 transitions. [2020-12-23 17:35:26,846 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1907 transitions. Word has length 24 [2020-12-23 17:35:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,846 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1907 transitions. [2020-12-23 17:35:26,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1907 transitions. [2020-12-23 17:35:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:35:26,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:35:26,850 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1316328079, now seen corresponding path program 1 times [2020-12-23 17:35:26,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139398470] [2020-12-23 17:35:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:26,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139398470] [2020-12-23 17:35:26,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871164270] [2020-12-23 17:35:26,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,885 INFO L87 Difference]: Start difference. First operand 1173 states and 1907 transitions. Second operand 3 states. [2020-12-23 17:35:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,909 INFO L93 Difference]: Finished difference Result 2119 states and 3476 transitions. [2020-12-23 17:35:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 17:35:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,920 INFO L225 Difference]: With dead ends: 2119 [2020-12-23 17:35:26,920 INFO L226 Difference]: Without dead ends: 2119 [2020-12-23 17:35:26,921 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 [2020-12-23 17:35:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-12-23 17:35:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1669. [2020-12-23 17:35:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-12-23 17:35:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2643 transitions. [2020-12-23 17:35:26,976 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2643 transitions. Word has length 24 [2020-12-23 17:35:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,977 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 2643 transitions. [2020-12-23 17:35:26,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2643 transitions. [2020-12-23 17:35:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:35:26,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:26,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 17:35:26,980 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,981 INFO L82 PathProgramCache]: Analyzing trace with hash 36464401, now seen corresponding path program 1 times [2020-12-23 17:35:26,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202141855] [2020-12-23 17:35:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:27,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202141855] [2020-12-23 17:35:27,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126221278] [2020-12-23 17:35:27,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,015 INFO L87 Difference]: Start difference. First operand 1669 states and 2643 transitions. Second operand 3 states. [2020-12-23 17:35:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,036 INFO L93 Difference]: Finished difference Result 2279 states and 3588 transitions. [2020-12-23 17:35:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 17:35:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,048 INFO L225 Difference]: With dead ends: 2279 [2020-12-23 17:35:27,049 INFO L226 Difference]: Without dead ends: 2279 [2020-12-23 17:35:27,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-12-23 17:35:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2277. [2020-12-23 17:35:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-23 17:35:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3587 transitions. [2020-12-23 17:35:27,104 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3587 transitions. Word has length 24 [2020-12-23 17:35:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,104 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3587 transitions. [2020-12-23 17:35:27,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3587 transitions. [2020-12-23 17:35:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:27,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:35:27,108 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash -2143288106, now seen corresponding path program 1 times [2020-12-23 17:35:27,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908424509] [2020-12-23 17:35:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:27,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908424509] [2020-12-23 17:35:27,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957319160] [2020-12-23 17:35:27,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,144 INFO L87 Difference]: Start difference. First operand 2277 states and 3587 transitions. Second operand 3 states. [2020-12-23 17:35:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,166 INFO L93 Difference]: Finished difference Result 2311 states and 3588 transitions. [2020-12-23 17:35:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 17:35:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,177 INFO L225 Difference]: With dead ends: 2311 [2020-12-23 17:35:27,177 INFO L226 Difference]: Without dead ends: 2311 [2020-12-23 17:35:27,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-12-23 17:35:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2020-12-23 17:35:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-12-23 17:35:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3587 transitions. [2020-12-23 17:35:27,225 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3587 transitions. Word has length 25 [2020-12-23 17:35:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,226 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 3587 transitions. [2020-12-23 17:35:27,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3587 transitions. [2020-12-23 17:35:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:27,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 17:35:27,229 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1130610836, now seen corresponding path program 1 times [2020-12-23 17:35:27,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843388467] [2020-12-23 17:35:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:27,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843388467] [2020-12-23 17:35:27,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912686055] [2020-12-23 17:35:27,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,251 INFO L87 Difference]: Start difference. First operand 2309 states and 3587 transitions. Second operand 3 states. [2020-12-23 17:35:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,280 INFO L93 Difference]: Finished difference Result 4103 states and 6436 transitions. [2020-12-23 17:35:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 17:35:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,301 INFO L225 Difference]: With dead ends: 4103 [2020-12-23 17:35:27,301 INFO L226 Difference]: Without dead ends: 4103 [2020-12-23 17:35:27,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-12-23 17:35:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3333. [2020-12-23 17:35:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3333 states. [2020-12-23 17:35:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5027 transitions. [2020-12-23 17:35:27,405 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5027 transitions. Word has length 25 [2020-12-23 17:35:27,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,405 INFO L481 AbstractCegarLoop]: Abstraction has 3333 states and 5027 transitions. [2020-12-23 17:35:27,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5027 transitions. [2020-12-23 17:35:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:27,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:27,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 17:35:27,410 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash -149252842, now seen corresponding path program 1 times [2020-12-23 17:35:27,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606608369] [2020-12-23 17:35:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:27,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606608369] [2020-12-23 17:35:27,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45256961] [2020-12-23 17:35:27,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,432 INFO L87 Difference]: Start difference. First operand 3333 states and 5027 transitions. Second operand 3 states. [2020-12-23 17:35:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,461 INFO L93 Difference]: Finished difference Result 4487 states and 6724 transitions. [2020-12-23 17:35:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 17:35:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,483 INFO L225 Difference]: With dead ends: 4487 [2020-12-23 17:35:27,484 INFO L226 Difference]: Without dead ends: 4487 [2020-12-23 17:35:27,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-12-23 17:35:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2020-12-23 17:35:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4485 states. [2020-12-23 17:35:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6723 transitions. [2020-12-23 17:35:27,587 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6723 transitions. Word has length 25 [2020-12-23 17:35:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,588 INFO L481 AbstractCegarLoop]: Abstraction has 4485 states and 6723 transitions. [2020-12-23 17:35:27,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6723 transitions. [2020-12-23 17:35:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:35:27,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:27,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 17:35:27,593 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,594 INFO L82 PathProgramCache]: Analyzing trace with hash 689412294, now seen corresponding path program 1 times [2020-12-23 17:35:27,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448445161] [2020-12-23 17:35:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:27,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448445161] [2020-12-23 17:35:27,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395413487] [2020-12-23 17:35:27,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,615 INFO L87 Difference]: Start difference. First operand 4485 states and 6723 transitions. Second operand 3 states. [2020-12-23 17:35:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,655 INFO L93 Difference]: Finished difference Result 4551 states and 6724 transitions. [2020-12-23 17:35:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 17:35:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,691 INFO L225 Difference]: With dead ends: 4551 [2020-12-23 17:35:27,694 INFO L226 Difference]: Without dead ends: 4551 [2020-12-23 17:35:27,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2020-12-23 17:35:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4549. [2020-12-23 17:35:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4549 states. [2020-12-23 17:35:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6723 transitions. [2020-12-23 17:35:27,834 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6723 transitions. Word has length 26 [2020-12-23 17:35:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,834 INFO L481 AbstractCegarLoop]: Abstraction has 4549 states and 6723 transitions. [2020-12-23 17:35:27,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6723 transitions. [2020-12-23 17:35:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:35:27,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:27,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 17:35:27,841 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash -331656060, now seen corresponding path program 1 times [2020-12-23 17:35:27,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540889734] [2020-12-23 17:35:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:27,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540889734] [2020-12-23 17:35:27,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598950552] [2020-12-23 17:35:27,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,862 INFO L87 Difference]: Start difference. First operand 4549 states and 6723 transitions. Second operand 3 states. [2020-12-23 17:35:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,900 INFO L93 Difference]: Finished difference Result 7943 states and 11844 transitions. [2020-12-23 17:35:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 17:35:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,925 INFO L225 Difference]: With dead ends: 7943 [2020-12-23 17:35:27,925 INFO L226 Difference]: Without dead ends: 7943 [2020-12-23 17:35:27,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2020-12-23 17:35:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 6661. [2020-12-23 17:35:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6661 states. [2020-12-23 17:35:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9539 transitions. [2020-12-23 17:35:28,136 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9539 transitions. Word has length 26 [2020-12-23 17:35:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:28,136 INFO L481 AbstractCegarLoop]: Abstraction has 6661 states and 9539 transitions. [2020-12-23 17:35:28,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9539 transitions. [2020-12-23 17:35:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:35:28,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:28,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:28,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 17:35:28,148 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:28,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1611519738, now seen corresponding path program 1 times [2020-12-23 17:35:28,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:28,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566826021] [2020-12-23 17:35:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:28,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566826021] [2020-12-23 17:35:28,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:28,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:28,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994358589] [2020-12-23 17:35:28,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:28,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:28,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:28,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,171 INFO L87 Difference]: Start difference. First operand 6661 states and 9539 transitions. Second operand 3 states. [2020-12-23 17:35:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:28,215 INFO L93 Difference]: Finished difference Result 8839 states and 12548 transitions. [2020-12-23 17:35:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:28,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 17:35:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:28,237 INFO L225 Difference]: With dead ends: 8839 [2020-12-23 17:35:28,237 INFO L226 Difference]: Without dead ends: 8839 [2020-12-23 17:35:28,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2020-12-23 17:35:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8837. [2020-12-23 17:35:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8837 states. [2020-12-23 17:35:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12547 transitions. [2020-12-23 17:35:28,430 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12547 transitions. Word has length 26 [2020-12-23 17:35:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:28,430 INFO L481 AbstractCegarLoop]: Abstraction has 8837 states and 12547 transitions. [2020-12-23 17:35:28,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12547 transitions. [2020-12-23 17:35:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:35:28,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:28,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:28,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 17:35:28,442 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:28,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1691188181, now seen corresponding path program 1 times [2020-12-23 17:35:28,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:28,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699144277] [2020-12-23 17:35:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:28,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699144277] [2020-12-23 17:35:28,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:28,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:28,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368139453] [2020-12-23 17:35:28,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:28,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:28,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:28,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,464 INFO L87 Difference]: Start difference. First operand 8837 states and 12547 transitions. Second operand 3 states. [2020-12-23 17:35:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:28,504 INFO L93 Difference]: Finished difference Result 8967 states and 12548 transitions. [2020-12-23 17:35:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:28,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-23 17:35:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:28,526 INFO L225 Difference]: With dead ends: 8967 [2020-12-23 17:35:28,527 INFO L226 Difference]: Without dead ends: 8967 [2020-12-23 17:35:28,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2020-12-23 17:35:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8965. [2020-12-23 17:35:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8965 states. [2020-12-23 17:35:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8965 states to 8965 states and 12547 transitions. [2020-12-23 17:35:28,776 INFO L78 Accepts]: Start accepts. Automaton has 8965 states and 12547 transitions. Word has length 27 [2020-12-23 17:35:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:28,776 INFO L481 AbstractCegarLoop]: Abstraction has 8965 states and 12547 transitions. [2020-12-23 17:35:28,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8965 states and 12547 transitions. [2020-12-23 17:35:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:35:28,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:28,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:28,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 17:35:28,866 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:28,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1582710761, now seen corresponding path program 1 times [2020-12-23 17:35:28,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:28,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108674324] [2020-12-23 17:35:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:28,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108674324] [2020-12-23 17:35:28,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:28,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:28,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130138402] [2020-12-23 17:35:28,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:28,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:28,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,890 INFO L87 Difference]: Start difference. First operand 8965 states and 12547 transitions. Second operand 3 states. [2020-12-23 17:35:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:28,946 INFO L93 Difference]: Finished difference Result 15367 states and 21636 transitions. [2020-12-23 17:35:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:28,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-23 17:35:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:28,981 INFO L225 Difference]: With dead ends: 15367 [2020-12-23 17:35:28,981 INFO L226 Difference]: Without dead ends: 15367 [2020-12-23 17:35:28,982 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 [2020-12-23 17:35:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2020-12-23 17:35:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13317. [2020-12-23 17:35:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13317 states. [2020-12-23 17:35:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13317 states to 13317 states and 18051 transitions. [2020-12-23 17:35:29,283 INFO L78 Accepts]: Start accepts. Automaton has 13317 states and 18051 transitions. Word has length 27 [2020-12-23 17:35:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:29,283 INFO L481 AbstractCegarLoop]: Abstraction has 13317 states and 18051 transitions. [2020-12-23 17:35:29,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 13317 states and 18051 transitions. [2020-12-23 17:35:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:35:29,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:29,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:29,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 17:35:29,303 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash 302847083, now seen corresponding path program 1 times [2020-12-23 17:35:29,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:29,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934709320] [2020-12-23 17:35:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:29,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934709320] [2020-12-23 17:35:29,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:29,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:29,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947516264] [2020-12-23 17:35:29,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:29,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:29,346 INFO L87 Difference]: Start difference. First operand 13317 states and 18051 transitions. Second operand 3 states. [2020-12-23 17:35:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:29,466 INFO L93 Difference]: Finished difference Result 17415 states and 23300 transitions. [2020-12-23 17:35:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:29,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-23 17:35:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:29,503 INFO L225 Difference]: With dead ends: 17415 [2020-12-23 17:35:29,504 INFO L226 Difference]: Without dead ends: 17415 [2020-12-23 17:35:29,504 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 [2020-12-23 17:35:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2020-12-23 17:35:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17413. [2020-12-23 17:35:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17413 states. [2020-12-23 17:35:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23299 transitions. [2020-12-23 17:35:29,856 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23299 transitions. Word has length 27 [2020-12-23 17:35:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:29,856 INFO L481 AbstractCegarLoop]: Abstraction has 17413 states and 23299 transitions. [2020-12-23 17:35:29,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23299 transitions. [2020-12-23 17:35:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:35:29,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:29,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:29,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 17:35:29,876 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1819608763, now seen corresponding path program 1 times [2020-12-23 17:35:29,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:29,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612708926] [2020-12-23 17:35:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:29,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612708926] [2020-12-23 17:35:29,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:29,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:29,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646547187] [2020-12-23 17:35:29,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:29,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:29,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:29,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:29,897 INFO L87 Difference]: Start difference. First operand 17413 states and 23299 transitions. Second operand 3 states. [2020-12-23 17:35:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:29,966 INFO L93 Difference]: Finished difference Result 17671 states and 23300 transitions. [2020-12-23 17:35:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:29,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-23 17:35:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:30,004 INFO L225 Difference]: With dead ends: 17671 [2020-12-23 17:35:30,005 INFO L226 Difference]: Without dead ends: 17671 [2020-12-23 17:35:30,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2020-12-23 17:35:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17669. [2020-12-23 17:35:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17669 states. [2020-12-23 17:35:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17669 states to 17669 states and 23299 transitions. [2020-12-23 17:35:30,548 INFO L78 Accepts]: Start accepts. Automaton has 17669 states and 23299 transitions. Word has length 28 [2020-12-23 17:35:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:30,548 INFO L481 AbstractCegarLoop]: Abstraction has 17669 states and 23299 transitions. [2020-12-23 17:35:30,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17669 states and 23299 transitions. [2020-12-23 17:35:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:35:30,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:30,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:30,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 17:35:30,567 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 798540409, now seen corresponding path program 1 times [2020-12-23 17:35:30,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:30,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979934671] [2020-12-23 17:35:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:30,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979934671] [2020-12-23 17:35:30,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:30,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:30,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574318905] [2020-12-23 17:35:30,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:30,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:30,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:30,587 INFO L87 Difference]: Start difference. First operand 17669 states and 23299 transitions. Second operand 3 states. [2020-12-23 17:35:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:30,670 INFO L93 Difference]: Finished difference Result 29703 states and 39172 transitions. [2020-12-23 17:35:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:30,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-23 17:35:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:30,718 INFO L225 Difference]: With dead ends: 29703 [2020-12-23 17:35:30,719 INFO L226 Difference]: Without dead ends: 29703 [2020-12-23 17:35:30,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29703 states. [2020-12-23 17:35:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29703 to 26629. [2020-12-23 17:35:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26629 states. [2020-12-23 17:35:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 34051 transitions. [2020-12-23 17:35:31,378 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 34051 transitions. Word has length 28 [2020-12-23 17:35:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:31,378 INFO L481 AbstractCegarLoop]: Abstraction has 26629 states and 34051 transitions. [2020-12-23 17:35:31,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 34051 transitions. [2020-12-23 17:35:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:35:31,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:31,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:31,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 17:35:31,431 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash -481323269, now seen corresponding path program 1 times [2020-12-23 17:35:31,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:31,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909814192] [2020-12-23 17:35:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:31,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909814192] [2020-12-23 17:35:31,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:31,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:31,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846033201] [2020-12-23 17:35:31,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:31,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:31,458 INFO L87 Difference]: Start difference. First operand 26629 states and 34051 transitions. Second operand 3 states. [2020-12-23 17:35:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:31,557 INFO L93 Difference]: Finished difference Result 34311 states and 43012 transitions. [2020-12-23 17:35:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:31,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-23 17:35:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:31,767 INFO L225 Difference]: With dead ends: 34311 [2020-12-23 17:35:31,768 INFO L226 Difference]: Without dead ends: 34311 [2020-12-23 17:35:31,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2020-12-23 17:35:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 34309. [2020-12-23 17:35:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34309 states. [2020-12-23 17:35:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 43011 transitions. [2020-12-23 17:35:32,279 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 43011 transitions. Word has length 28 [2020-12-23 17:35:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:32,280 INFO L481 AbstractCegarLoop]: Abstraction has 34309 states and 43011 transitions. [2020-12-23 17:35:32,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 43011 transitions. [2020-12-23 17:35:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:35:32,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:32,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:32,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 17:35:32,427 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:32,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:32,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1014835328, now seen corresponding path program 1 times [2020-12-23 17:35:32,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:32,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841866083] [2020-12-23 17:35:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841866083] [2020-12-23 17:35:32,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:32,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:32,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971213013] [2020-12-23 17:35:32,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:32,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:32,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:32,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:32,455 INFO L87 Difference]: Start difference. First operand 34309 states and 43011 transitions. Second operand 3 states. [2020-12-23 17:35:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:32,594 INFO L93 Difference]: Finished difference Result 34823 states and 43012 transitions. [2020-12-23 17:35:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:32,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 17:35:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:32,655 INFO L225 Difference]: With dead ends: 34823 [2020-12-23 17:35:32,655 INFO L226 Difference]: Without dead ends: 34823 [2020-12-23 17:35:32,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34823 states. [2020-12-23 17:35:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34823 to 34821. [2020-12-23 17:35:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-12-23 17:35:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 43011 transitions. [2020-12-23 17:35:33,321 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 43011 transitions. Word has length 29 [2020-12-23 17:35:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:33,321 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 43011 transitions. [2020-12-23 17:35:33,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 43011 transitions. [2020-12-23 17:35:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:35:33,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:33,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:33,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 17:35:33,367 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:33,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2035903682, now seen corresponding path program 1 times [2020-12-23 17:35:33,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:33,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371743475] [2020-12-23 17:35:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:33,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371743475] [2020-12-23 17:35:33,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:33,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:33,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698721074] [2020-12-23 17:35:33,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:33,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:33,387 INFO L87 Difference]: Start difference. First operand 34821 states and 43011 transitions. Second operand 3 states. [2020-12-23 17:35:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:33,551 INFO L93 Difference]: Finished difference Result 67591 states and 79876 transitions. [2020-12-23 17:35:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:33,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 17:35:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:33,625 INFO L225 Difference]: With dead ends: 67591 [2020-12-23 17:35:33,626 INFO L226 Difference]: Without dead ends: 67591 [2020-12-23 17:35:33,626 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 [2020-12-23 17:35:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2020-12-23 17:35:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67589. [2020-12-23 17:35:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67589 states. [2020-12-23 17:35:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 79875 transitions. [2020-12-23 17:35:34,903 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 79875 transitions. Word has length 29 [2020-12-23 17:35:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:34,904 INFO L481 AbstractCegarLoop]: Abstraction has 67589 states and 79875 transitions. [2020-12-23 17:35:34,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 79875 transitions. [2020-12-23 17:35:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:35:34,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:34,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:34,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 17:35:34,976 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash -756040004, now seen corresponding path program 1 times [2020-12-23 17:35:34,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:34,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923157353] [2020-12-23 17:35:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:35,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923157353] [2020-12-23 17:35:35,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:35,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:35,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531891854] [2020-12-23 17:35:35,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:35,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:35,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:35,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:35,004 INFO L87 Difference]: Start difference. First operand 67589 states and 79875 transitions. Second operand 3 states. [2020-12-23 17:35:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:35,194 INFO L93 Difference]: Finished difference Result 71687 states and 84996 transitions. [2020-12-23 17:35:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:35,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 17:35:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:35,275 INFO L225 Difference]: With dead ends: 71687 [2020-12-23 17:35:35,275 INFO L226 Difference]: Without dead ends: 71687 [2020-12-23 17:35:35,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71687 states. [2020-12-23 17:35:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71687 to 67589. [2020-12-23 17:35:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67589 states. [2020-12-23 17:35:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 78851 transitions. [2020-12-23 17:35:36,316 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 78851 transitions. Word has length 29 [2020-12-23 17:35:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:36,317 INFO L481 AbstractCegarLoop]: Abstraction has 67589 states and 78851 transitions. [2020-12-23 17:35:36,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 78851 transitions. [2020-12-23 17:35:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 17:35:36,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:36,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:36,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 17:35:36,348 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:36,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1311711408, now seen corresponding path program 1 times [2020-12-23 17:35:36,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:36,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114619122] [2020-12-23 17:35:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:36,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114619122] [2020-12-23 17:35:36,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:36,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:36,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800866555] [2020-12-23 17:35:36,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:36,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:36,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:36,380 INFO L87 Difference]: Start difference. First operand 67589 states and 78851 transitions. Second operand 3 states. [2020-12-23 17:35:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:37,001 INFO L93 Difference]: Finished difference Result 109573 states and 124931 transitions. [2020-12-23 17:35:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:37,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-23 17:35:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:37,152 INFO L225 Difference]: With dead ends: 109573 [2020-12-23 17:35:37,153 INFO L226 Difference]: Without dead ends: 109573 [2020-12-23 17:35:37,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2020-12-23 17:35:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 105477. [2020-12-23 17:35:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105477 states. [2020-12-23 17:35:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105477 states to 105477 states and 120835 transitions. [2020-12-23 17:35:38,516 INFO L78 Accepts]: Start accepts. Automaton has 105477 states and 120835 transitions. Word has length 30 [2020-12-23 17:35:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:38,517 INFO L481 AbstractCegarLoop]: Abstraction has 105477 states and 120835 transitions. [2020-12-23 17:35:38,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 105477 states and 120835 transitions. [2020-12-23 17:35:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 17:35:38,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:38,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:38,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-23 17:35:38,955 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:38,956 INFO L82 PathProgramCache]: Analyzing trace with hash 31847730, now seen corresponding path program 1 times [2020-12-23 17:35:38,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:38,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738460893] [2020-12-23 17:35:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:39,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738460893] [2020-12-23 17:35:39,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:39,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:39,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003500565] [2020-12-23 17:35:39,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:39,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:39,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:39,034 INFO L87 Difference]: Start difference. First operand 105477 states and 120835 transitions. Second operand 3 states. [2020-12-23 17:35:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:39,413 INFO L93 Difference]: Finished difference Result 132099 states and 145410 transitions. [2020-12-23 17:35:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:39,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-23 17:35:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:39,414 INFO L225 Difference]: With dead ends: 132099 [2020-12-23 17:35:39,414 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:35:39,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:35:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:35:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:35:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:35:39,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-23 17:35:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:39,415 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:35:39,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:35:39,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:35:39,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-23 17:35:39,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:35:39 BoogieIcfgContainer [2020-12-23 17:35:39,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:35:39,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:35:39,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:35:39,422 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:35:39,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:24" (3/4) ... [2020-12-23 17:35:39,426 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:35:39,439 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 17:35:39,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 17:35:39,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-23 17:35:39,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 17:35:39,495 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_12.c-witness.graphml [2020-12-23 17:35:39,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:35:39,498 INFO L168 Benchmark]: Toolchain (without parser) took 15846.33 ms. Allocated memory was 151.0 MB in the beginning and 6.3 GB in the end (delta: 6.1 GB). Free memory was 126.6 MB in the beginning and 5.1 GB in the end (delta: -4.9 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,498 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:35:39,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 115.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,500 INFO L168 Benchmark]: Boogie Preprocessor took 31.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,500 INFO L168 Benchmark]: RCFGBuilder took 566.83 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 128.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,501 INFO L168 Benchmark]: TraceAbstraction took 14692.73 ms. Allocated memory was 151.0 MB in the beginning and 6.3 GB in the end (delta: 6.1 GB). Free memory was 127.6 MB in the beginning and 5.1 GB in the end (delta: -4.9 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,501 INFO L168 Benchmark]: Witness Printer took 73.80 ms. Allocated memory is still 6.3 GB. Free memory was 5.1 GB in the beginning and 5.1 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:39,503 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 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 424.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 115.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.83 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 128.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14692.73 ms. Allocated memory was 151.0 MB in the beginning and 6.3 GB in the end (delta: 6.1 GB). Free memory was 127.6 MB in the beginning and 5.1 GB in the end (delta: -4.9 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Witness Printer took 73.80 ms. Allocated memory is still 6.3 GB. Free memory was 5.1 GB in the beginning and 5.1 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: 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, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 35, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3384 SDtfs, 1699 SDslu, 2170 SDs, 0 SdLazy, 176 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105477occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.1s AutomataMinimizationTime, 35 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 787 ConstructedInterpolants, 0 QuantifiedInterpolants, 40589 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 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...